Maker, model, serial, photos, nameplates, drawings, quantity, port and ETA.
Engines & Major Components
Marine Engine
Marine Engine
Spare Parts Supplier
Engine-room spare parts supply for main and auxiliary engine spares, overhaul items and time-critical RFQs.
Request context is structured before supplier routing or quotation work.
We review the OEM route or a verified alternative route where appropriate.
Commercial request is prepared for clearer supplier review and buyer reply.
Main and auxiliaryEngine spares and overhaul items
OEM + verified alternativesRoute review by criticality and approval context
Technical cross-checkingMaker, model, serial, part book and photos
Port-aware deliveryTime-critical RFQ and port/ETA coordination
Engine spare parts supplier
Engine RFQs handled around maker, model, serial number and vessel schedule.
Vessel Core supplies shipowners, managers, superintendents, purchasing departments, repair yards and maritime agents with marine main and auxiliary engine spare parts.
The request can begin from complete part numbers, engine data plates, part book pages, drawings, photos or an Excel list. We structure the RFQ for technical matching, OEM and verified alternative route review, and port-aware commercial follow-up.
Supply scope
Engine spare parts and overhaul items we can structure into an RFQ.
Coverage for planned maintenance, overhaul supply and time-critical engine-room spare parts requests. Engine builder names and type designations are used on this page to identify what is installed and for nothing else: Vessel Core holds no dealership, distribution, representation or partnership agreement with SEMT Pielstick, Deutz, MWM, Niigata, Anglo Belgian Corporation, L'Orange or any other manufacturer, and a quotation against a designation implies no approval by the maker that owns it.
Cylinder liners
Cylinder liners, liner seals and related replacement components.
Pistons
Piston crowns, skirts, assemblies and associated engine components.
Piston rings
Piston ring sets, wear items and overhaul-related ring components.
Fuel injectors
Fuel injectors, nozzles, pumps and injection-system spare parts. A great deal of the injection equipment on medium-speed engines was built by L'Orange rather than by the engine builder, so the code on the injector body, on the nozzle and on the plunger and barrel assembly is often the reference that opens the line, and it belongs in the request alongside the engine designation because the same nozzle code was revised across build years. A plunger and its barrel are lapped as a pair and ordered as one item, never as two.
Bearings
Main and crankpin bearing shells, crosshead shells on slow-speed engines and thrust bearing parts, requested by shell size and, where the journals have been reground, by undersize.
Valves
Exhaust valves, inlet valves, seats, spindles, cages and actuator-related items.
Gaskets and seals
Gasket sets, O-rings, sealing kits and overhaul consumables.
Filters and overhaul kits
Oil/fuel filters, service kits and grouped overhaul item lists.
By engine duty
Main engine spare parts
On a slow-speed main engine a request is tied to a cylinder unit and a build, not to the engine as a whole.
- Cylinder liners, liner seals and anti-cavitation rings
- Piston crowns, skirts, rings and piston rod stuffing box parts
- Exhaust valve spindles, seats, cages and actuator components
- Fuel valves, injection pump elements, plungers and delivery valves
- Crosshead, crankpin and main bearing shells
- Cylinder cover studs, nuts and complete overhaul gasket sets
Overhaul intervals are counted in running hours per unit, so quantities usually arrive as unit sets rather than singles, and the unit number belongs in the request beside the part reference. The Mark number and the build data are what settle a part number when the same designation covers several generations. On the electronically controlled two-strokes — MAN B&W ME-C and Sulzer RT-flex — fuel injection and exhaust valve actuation are controlled electronically with no camshaft, so that hardware has no counterpart on a camshaft engine of the same bore, and the plate has to show which generation is fitted. Access matters too: what can be reached with the engine in place decides the order of the work, and that changes timing more than the part itself does.
By engine duty
Auxiliary engine spare parts
Auxiliaries are medium- or high-speed four-strokes, usually several identical sets, and the request pattern is different.
- Complete cylinder heads and head components rather than parts of one unit
- Injectors, nozzles and injection pump elements exchanged as assemblies
- Turbocharger cartridges, nozzle rings and shaft seal kits
- Inlet and exhaust valves, seats, guides, rocker gear and pushrods
- Main and connecting rod bearing shells by shell size and undersize
- Jacket-water and lube oil pump service kits, thermostat and cooler seals
Because the sets are identical, a quantity is usually multiplied across engines — a valve kit for one auxiliary rarely stays a valve kit for one auxiliary. The engine number stencilled on the frame identifies which set the request came from, and the serial number identifies the build; a cylinder position matters far less here than it does on the main engine. Where an auxiliary drives a generator, the alternator side is a separate supply question and is treated as one. Two builders show the pattern plainly. Deutz and MWM engines are named by series — the 628, and the TBD 234, TBD 604 and TBD 620 — and are met on generating sets as well as on propulsion duty, so the series on its own does not settle a cylinder head or a bearing shell without the execution letters in front of the cylinder count, the serial and the duty. Anglo Belgian Corporation names its engines DX and DZ, and because they are found on generator and on propulsion duty within the same engine room, the request has to say which of the sets aboard it came from.
Main or auxiliary
Main engine or auxiliary engine: what identifies the part.
What makes a line quotable depends on the engine's job on board.
Two-stroke crosshead main engine
Where a trunk-piston book has one piston, a crosshead engine's book lists crown, skirt, piston rod and crosshead parts as separate lines, so name the piece. Give the builder as the plate names it, often a licensee, and the cylinder the item came off, saying which end you counted from. See MAN B&W S50MC and main engine piston and liner parts.
Four-stroke generating set
Engine and alternator share a base frame but not a maker, and the turbocharger and governor often come from other makers. An alternator bearing or governor actuator is read off its own plate, so photograph each plate on the set. See MAN L23/30H.
One frame, two duties
Several four-stroke frames are built differently for propulsion and generating duty; the Yanmar 6EY18 LW builds have their own parts catalogue. State the duty: ship's service generating set, main engine or part of a diesel-electric plant. On a V engine, give the bank with the cylinder, as on the Wärtsilä W32.
For the readings around an engine (O-rings, temperature sensors, gauges, belts, threads and the oil), the tools for engines are gathered on one view of the measurement tools page. For the fuel itself, the marine fuel grade reader decodes an ISO 8217 grade and the CCAI calculator gives the ignition quality of a residual fuel.
Engine bearings
Engine bearings as spare parts: what a shell order needs.
A bearing shell looks like a simple line on a parts list, yet two shells that seem identical in a photograph can carry different part numbers.
- Main bearing shells, the split shells that carry the crankshaft journals in the bedplate or engine block; the upper and lower halves are often separate items in the parts catalogue
- Connecting-rod (big-end) bearing shells on the crankpin, ordered per connecting rod
- Crosshead bearing shells on two-stroke crosshead main engines, between the crosshead pin and the top end of the connecting rod
- Thrust bearing segments faced with white metal at the aft end of a two-stroke main engine, which pass the propeller thrust into the hull
- Camshaft bushes on four-stroke engines, listed in the parts catalogue as items of their own
Most of what identifies a shell for a quotation is on its back. The part number and the bearing maker's mark are stamped or printed there, and that number can be the bearing maker's own reference rather than the engine builder's part-book number, so send both when the book is to hand. Beside it sits the size marking: a standard shell, an undersize shell made thicker on the inside for a journal that has been reground, or an oversize shell with a larger outside diameter for a housing bore that has been machined. The undersize has to match what was actually taken off that journal, and it is safer not to assume every journal on the crankshaft went to the same step, so give the size for each position. Position completes the line: the main bearing number and the end it was counted from, the connecting rod or cylinder number, upper or lower half and, on a V engine, the bank. One legible photograph of the back of the old shell settles more than a written description. Clearances and deflections belong to the engine's own records; where a set of deflection readings prompted the enquiry, the crankshaft deflection calculator shows how they are worked. Vessel Core supplies the shells and bushes, not the fitting.
Model index
164 models in this category, filterable.
Start typing a designation, a maker or a part and the rows filter as you go. The full list across every category and maker lives on the maker reference page.
164 models · 4 notes
| Model | Series | Maker | Typical parts |
|---|---|---|---|
| DX · DXC | DX series | ABC | The DX line followed the earlier DU engines, DX naming the naturally aspirated build and DXC the charge-air cooled one. Requests are written around cylinder heads, liners, piston assemblies, injection equipment and bearing shells, and the letter after DX belongs in the request because it separates two different builds of the same engine. |
| DZ · DZC | DZ series · in-line | ABC | The in-line DZ engines are the current Anglo Belgian Corporation range for propulsion and generating duty. Cylinder covers, valve spindles and seats, fuel injection pumps, injectors, connecting rod and main bearings are the usual lines; the cylinder count in front of the code identifies the engine, so send the plate as written. |
| V-DZC · 12V · 16V | DZ series · V-form | ABC | The V-form DZC engines extended the range to twelve and sixteen cylinders. A V engine doubles the bank-dependent items, so state the bank and the cylinder position for heads, liners, rods and camshaft sections rather than the quantity alone. |
| Type A · AX · AT · K · E | Four-stroke, plus licence-built UEC two-stroke | Akasaka | Akasaka's own four-stroke types run alongside UEC two-strokes built under licence for Japanese coastal and fishing tonnage. Confirm which programme the plate belongs to, since the two draw from different parts catalogues under the same builder name. |
| M26.2 · M26.3 | M26 series | Baudouin | A Baudouin commercial engine built in six, eight and twelve cylinders. The M26.3 is the later common-rail generation, so injection items for an M26.2 and an M26.3 are never assumed to match. Engines such as the 6M26.3 and the 12M26.3 serve as propulsion engines and generator engines, and the use goes into the enquiry. |
| 6M33.2 · 6M33.3 · 12M33.2 · 16M33.3 | M33 series | Baudouin | The larger commercial series, in generations .2 and .3 and in six, twelve and sixteen cylinders, used on tugs and pushboats among others. Cylinder heads, liners, pistons, bearings and injection parts are matched to the complete code and serial. |
| 12M55 | M55 series | Baudouin | The largest Baudouin commercial engine, built for sea-going tugs, deep-sea trawlers, dredgers and ferries. Enquiries are quoted line by line against the code, the serial and the parts catalogue the ship holds. |
| 6F21 | F series | Baudouin | The first engine of the F series, introduced after the M33. Filters, cooler elements and gasket sets are quoted against its code and serial like the larger engines. |
| DP · DNP | Older engines | Baudouin | Earlier Baudouin series still met on older fishing vessels. The type is copied from the plate exactly, and photographs of the plate, the engine and the removed part are the next evidence when a plate has worn. |
| B33:45L · B33:45V | B series, liquid fuel | Bergen | The current larger liquid-fuel engine, built in-line (L) and as a V engine. It succeeded the B32:40 as the main platform, so an enquiry states which of the two is on board. Cylinder heads, liners, pistons and rings, bearings and injection items are quoted against the full type and the serial. |
| B32:40 | B series, liquid fuel | Bergen | The earlier liquid-fuel platform, in-line and V, used for propulsion and in generating sets. Many are still at work on ferries and offshore tonnage. The plate may carry a Bergen Diesel or Rolls-Royce name; cylinder heads, liners, pistons, bearings, nozzles and gasket kits are matched to the type and serial. |
| C25:33L | C series, liquid fuel | Bergen | The smaller in-line liquid-fuel engine, for propulsion and for generating sets, and able to run on heavy fuel oil. Pistons, fuel pump plungers, valves and gasket sets are quoted against the engine type, the serial and the duty, because a propulsion engine and a generating set are set up differently. |
| B36:45L · B36:45V | B series, gas | Bergen | The lean-burn gas twin of the B33:45. Its main structural parts are shared with the B33:45, but the gas admission, ignition and control items are its own, so the plate decides which list applies. |
| C26:33L · B35:40 | Gas engines | Bergen | The gas twins of the C25:33 and the B32:40. Base engine items can resemble the diesel twin while gas valves, pre-chambers and ignition parts differ, so the gas type is named in every enquiry line. |
| K · K-G4 · BRM | Older engines | Bergen | Engines from before the B and C series: the K family and the K-G4 gas engine derived from it, and the BRM engines. Their plates often read Normo, BMV or Bergen Diesel. The full type with its letters and cylinder figure is copied exactly from the plate, and photographs of the plate and the removed part are the next evidence. |
| CAT 3508 | CAT 3500 Series | Caterpillar | 8-cylinder V-form diesel, auxiliary and propulsion. Cylinder liner sets, piston assemblies, injector tips, turbocharger cartridges, gasket kits. |
| CAT 3512 | CAT 3500 Series | Caterpillar | CAT 3512 RFQs can include piston rings, cylinder head gaskets, injector assemblies, water pump seals and valve sets. Confirm the complete engine identity and arrangement. |
| CAT 3606 · 3608 | CAT 3600 Series | Caterpillar | Large-bore medium-speed main propulsion engines. Cylinder heads, piston crowns, exhaust valve assemblies, camshaft components, crankshaft bearing shells. |
| CAT 3612 · 3616 | CAT 3600 Series | Caterpillar | High-power V-form main engines for large vessels. Fuel injection pumps, cylinder liner kits, charge air cooler elements, governor components, overhaul seal sets. |
| CAT C18 | CAT C-Series | Caterpillar | Compact in-line six-cylinder diesel for auxiliary and propulsion. Cylinder head kits, injector assemblies, timing components, cooling circuit seals, gasket sets. |
| CAT C32 | CAT C-Series | Caterpillar | High-speed marine diesel for fast craft and workboats. Injectors, turbocharger units, piston ring sets, water pump assemblies, heat exchanger elements. |
| MaK M 20 · M 25 · M 32 | MaK (Caterpillar group) | Caterpillar | MaK medium-speed engines built by Caterpillar Motoren in Kiel. Cylinder heads, liners, fuel injection equipment, turbocharger components and overhaul gasket kits — reviewed against the engine evidence supplied with the RFQ. |
| KTA19 | Cummins K-Series | Cummins | KTA19 RFQs can include pistons, liners, cylinder heads, injectors, turbocharger components and gasket sets. Confirm the complete engine identity and installed configuration. |
| KTA38 | Cummins K-Series | Cummins | V12 high-output marine diesel. Anchor handling tugs and platform supply vessels. Crankshaft bearings, connecting rods, exhaust valves, fuel pump assemblies. |
| KTA50 | Cummins K-Series | Cummins | V16 top-output K-series engine. Heavy anchor handlers and large OSVs. Cylinder liners, piston ring sets, turbocharger cartridges, intercooler cores, overhaul kits. |
| QSB6.7 | Cummins QSB Series | Cummins | QSB6.7 RFQs can include piston rings, injector nozzles, turbocharger components, gasket sets and cooling-system parts. Confirm model, serial and application evidence. |
| QSK19 | Cummins QSK Quantum | Cummins | Quantum series with advanced fuel management. Cylinder heads, injector cups, valve seat inserts, camshaft followers, lube oil system components. |
| QSK38 | Cummins QSK Quantum | Cummins | QSK V12 Quantum high-power engine. Piston assemblies, exhaust valve rotators, fuel injectors, turbocharger nozzle rings, cooling system spares. |
| QSK60 | Cummins QSK Quantum | Cummins | Top-tier Quantum engine for high-power commercial vessels. Main bearings, piston crowns, cylinder liner sets, complete head assemblies, full overhaul kits. |
| QSM11 | Cummins QSM Series | Cummins | QSM11 RFQs can include injectors, cylinder head gaskets, water pump assemblies, intercooler elements and seal kits. Confirm model, serial and application evidence. |
| DK-20e | Daihatsu DK Series | Daihatsu | DK-20e RFQs can include pistons, liners, cylinder heads, fuel pumps and injection valves. Confirm model suffix, serial/build and generator-set evidence. |
| DK-26 | Daihatsu DK Series | Daihatsu | DK-26 RFQs can include cylinder liners, piston rings, exhaust valve assemblies, turbocharger nozzle rings and bearing shells. Confirm model suffix and serial/build evidence. |
| DK-28 | Daihatsu DK Series | Daihatsu | DK-28 RFQs can include pistons, connecting rods, crankshaft bearings, fuel injection equipment and gasket sets. Confirm configuration, serial/build and part evidence. |
| DKM-36 | Daihatsu DKM Series | Daihatsu | DKM-36 RFQs can include pistons, cylinder liners, exhaust valves, turbocharger parts and camshaft drives. Confirm installed duty, serial/build and part evidence. |
| DL-22 | Daihatsu DL Series | Daihatsu | DL-22 RFQs can include cylinder heads, valve seat inserts, governor components, cooling-system spares and overhaul kits. Confirm serial/build and part evidence. |
| DL-26 | Daihatsu DL Series | Daihatsu | DL-26 RFQs can include fuel injection pumps and plungers, turbocharger interface parts, piston crowns and cylinder head gaskets. Confirm installed duty and build evidence. |
| DS-26 | Daihatsu DS Series | Daihatsu | DS-26 RFQs can include liners, valves and injection equipment. Confirm the complete model suffix, installed duty, serial/build and approved overhaul scope. |
| SBA 6M 528 | Deutz MWM 528 | Deutz / MWM | A medium-speed frame met on older tonnage and on stationary sets ashore, written on parts lists as SBA6M528 without spaces as often as with them. Cylinder heads, liners, piston and ring sets, injection pumps, injectors and bearing shells are the usual lines. |
| BV · RBV · SBV 6M · 8M · 12M · 16M 540 | Deutz MWM 540 | Deutz / MWM | The 540 frames appear in several executions, and the letters in front of the cylinder count separate them. Requests cover liners, piston crowns and rings, cylinder heads with valves and seats, connecting rod and main bearings; copy the leading letters as well as the figure, because a part matched to BV does not always suit SBV. |
| SBV 6M 628 · TBD 628 | Deutz MWM 628 | Deutz / MWM | The 628 family covers V-form engines in six, eight, twelve and sixteen cylinders and is the Deutz frame met most often on propulsion duty. Cylinder heads, liner and piston sets, exhaust valve assemblies, fuel injection equipment, turbocharger interface parts and overhaul gasket sets are the recurring lines. |
| TBD 234 | Deutz MWM 234 | Deutz / MWM | A compact high-speed family used on generating sets and service craft. Piston and ring sets, cylinder head gaskets, injectors and injection pump elements, water pump and cooling-circuit seals and full gasket kits are what an overhaul list on this engine usually holds. |
| TBD 604 · TBD 620 | Deutz MWM 604 / 620 | Deutz / MWM | Two four-stroke families still carried on many auxiliary and propulsion installations. Requests centre on cylinder liners, piston crowns and rings, valve spindles and seat rings, injection pumps and plungers, turbocharger nozzle and bearing items and camshaft drive components. |
| N40 · N45 | NEF series | FPT Industrial | The smaller NEF engines. The N40 is a NEF propulsion engine for commercial and pleasure craft, reported in versions such as the N40 250 E. The N45 is offered in FPT's G-Drive generator range and was reported as a mechanical auxiliary unit. Filters, sea water pump rotors, belts and gasket sets are matched to the code on the plate. |
| N60 · N67 | NEF series | FPT Industrial | The N60 was offered as a marine engine in the Iveco Motors years; larger current NEF marine engines carry N67 codes such as the N67 450 N or N67 570 EVO. FPT offers the N67 both for propulsion and as a G-Drive generator engine, so the use is part of the enquiry. Keel-cooled versions exist alongside heat-exchanger cooling, and the cooling layout changes which items are needed. |
| C90 | Cursor series | FPT Industrial | The middle Cursor engine, built for propulsion and also reported as the C90 410, an auxiliary unit set up for on-board generators. Injection parts, turbocharger items, charge-air cooler elements and gasket sets are quoted against the full code and serial, because propulsion and generator versions are set up differently. |
| C13 · C13 ENT M77 | Cursor series | FPT Industrial | The Cursor 13 was offered as a marine engine in the Iveco Motors years, for example as the C13 ENT M77, and FPT later presented it for both pleasure and commercial craft. The usual lines of a C13 enquiry are zinc anodes, the sea water pump rotor, cooler elements and their gaskets, the auxiliary belt and fuel filters, each checked against the code and serial. |
| C16 600 · C16 1000 | Cursor series | FPT Industrial | The largest Cursor marine engine, derived from the Cursor 16 and listed in the C16 600 and C16 1000 versions. Parts are quoted against the complete code and serial, with the duty and the gearbox on the shaft noted in the enquiry, since the same family name covers different settings. |
| C78 ENT · C78 ENT M55 | Cursor, Iveco Motors period | FPT Industrial | An earlier Cursor marine engine, offered in versions such as the C78 ENT M55 when the line was sold as Iveco Motors. Many of these engines still work on fishing vessels and workboats; the plate code and serial are read first, and items revised since the build are named in the reply. |
| N45 · N67 · C90 410 | G-Drive Marine | FPT Industrial | FPT's fixed-speed range for on-board generators and hotel loads, built to work alongside its propulsion engines. A G-Drive engine is quoted on its own engine code, and the alternator of the generating set is quoted separately from the alternator's own plate. |
| 8061 SRM | Iveco Aifo, older range | FPT Industrial | Diesel engines sold for marine use under the Fiat, Iveco and Aifo names. The letters and digits after SRM mark the version and are copied exactly. Where the plate has faded, photographs of the engine, the removed part and any number cast or stamped on it are the next evidence. |
| LH · LH-L · LA | Low-speed four-stroke main engines | Hanshin | Hanshin's low-speed four-stroke families power Japanese-built coastal tonnage, and an older vessel's plate may read LU or EL instead of the current family letters — the same maker under an earlier naming. |
| ME-C · ME-GI · ME-GIE · ME-GA · ME-LGIM · ME-LGIP | HD Hyundai Heavy Industries · Everllence licence | HD Hyundai / Doosan | MAN B&W two-strokes built by HD Hyundai Heavy Industries. Exhaust valve parts, cylinder covers, liners, piston ring sets, HCU and control valve items, gas and pilot fuel valve items. Give the builder's works number. |
| X92 · X-DF · RT-flex82C · RT-flex DF | HD Hyundai Heavy Industries · WinGD licence | HD Hyundai / Doosan | WinGD two-strokes built by the same Hyundai works. Exhaust valve parts, liners, piston ring sets, common-rail injection items, gas admission and pilot fuel items on X-DF. Read the type, not the builder. |
| ME-C · ME-B · MC · ME-LGIP · ME-GA | HD Hyundai Marine Engine · formerly STX Heavy Industries | HD Hyundai / Doosan | MAN B&W two-strokes built in Changwon. Exhaust valves, fuel valves, fuel pump parts, pistons, stuffing box rings, bearing shells, pipes and cylinder covers. Older documents may read STX. |
| ME-GI | Hanwha Engine · formerly HSD Engine and Doosan Engine | HD Hyundai / Doosan | MAN B&W two-strokes from the former Doosan works. Gas injection and pilot fuel valve items, exhaust valve parts, liners and piston ring sets. Plates may read Doosan, HSD or Hanwha. |
| H21/32 · H25/33 · H32/40 | HiMSEN four-stroke | HiMSEN | HiMSEN covers Hyundai's four-stroke auxiliary and propulsion range from H17/28 up to the H46/60V and H54DF frames. The V-form H32/40V is a separate build from the in-line H32/40 sharing the bore, and cylinder-head or liner parts are not interchangeable between them on that basis alone. |
| 4045AFM85 · 4045TFM85 | PowerTech 4045 | John Deere | The four-cylinder marine engines. The 4045AFM85 is a propulsion engine introduced to take over from the earlier six-cylinder 6068TFM75 and 6068TFM76, and the 4045TFM85 is the generator-drive build. Filters, the sea water pump impeller, anodes and gasket sets are quoted against the full code and serial. |
| 6068AFM85 · 6068SFM85 | PowerTech 6068 | John Deere | Six-cylinder marine engines with a high-pressure common-rail fuel system, offered for propulsion and, under the same code, as constant-speed auxiliary and generator engines. The use on board goes into the enquiry, since the two builds are set up differently. |
| 6090AFM85 · 6090SFM85 · 6090HFM85 | PowerTech 6090 | John Deere | The middle six-cylinder family for propulsion and generator drive. The HFM85 build is the radiator-cooled engine for generating sets and auxiliary duty, so cooling items for it differ from those of a keel- or heat-exchanger-cooled propulsion engine. |
| 6135AFM85 · 6135SFM85 · 6135HFM85 | PowerTech 6135 | John Deere | The largest PowerTech marine family, for propulsion and generator drive, with a radiator-cooled HFM85 build for generating sets. Injectors, cooler elements, turbocharger gaskets and filter sets are quoted against the complete code and serial. |
| 6068TFM75 · 6068TFM76 · 6081AFM75 | Earlier marine codes | John Deere | Engines from before the 85-coded generation, still at work on many vessels. TFM75 marked a propulsion build and TFM76 a generator-drive build of the 6068. Parts are matched to the old code and serial, and items revised since the build are named in the reply. |
| M 32 C | In-line long-stroke, medium-speed | MaK | The M 32 C is MaK's in-line long-stroke build; the V-form VM 32 C is a separate engine under the same family name and not automatically interchangeable on cylinder-head or liner parts. MaK is now a Caterpillar programme, and parts are still supplied even though the M-series is out of production. |
| 6L35MC · 5L35MC MK6 | MC type · camshaft-controlled | Makita | The engine Makita's two-stroke business grew from. B&W approval for the L35MC/MCE came in 1981, the first 6L35MC built anywhere left the Takamatsu works in 1982, and the 5L35MC MK6 power-up version followed in 1993. Makita still calls the L35MC the world standard for small bore. Fuel injection, starting air and exhaust timing all run off the camshaft, so a fuel pump or cam line on this engine has no ME-B counterpart. |
| 4S26MC · S42MC · 6S50MC MK6 | MC type · super-long-stroke | Makita | The S frames Makita built on the camshaft principle: the 4S26MC completed in 1988, the S42MC that still appears on its MC product page, and the 6S50MC MK6, which Makita's history records in 2001, the year a test bed for the S50MC was completed at the works. An S50MC from Makita is reviewed against the type described on our S50MC page, with Makita's own build data added. |
| S30ME-B9 · 6S30ME-B | ME-B type · electronic control | Makita | Makita completed the first 6S30ME-B anywhere in 2014 and presents the S30ME-B as the successor to the L35MC. Injection and cylinder lubrication are timed electronically instead of by cam, which brings control and actuation components that no MC engine carries, and an Alpha lubricator, for which Makita has published its own emergency-operation video. |
| 6S35ME-B · 6S46ME-B | ME-B type · electronic control | Makita | Both were completed at Makita in 2013 as the first of their type built in Japan, the year the company began producing electronically controlled engines. An ME-B plate is a parts route of its own: a part number taken from an MC engine of similar bore is not carried across without a check. |
| L21/31 Mk2 · L21/31 Mk2 PLO | MAN Four-stroke · Holeby | MAN | Second build of the Holeby GenSet; PLO is the part-load optimised version. Cylinder heads and valves, liners, pistons and ring sets, bearing shells, injection pumps and injectors, charge air cooler elements. State Mk2 and PLO. |
| L21/31DF-M | MAN Four-stroke · methanol dual-fuel | MAN | Methanol GenSet built on the L21/31 Mk2 with port fuel injection. Methanol injectors and supply items, plus cylinder-unit and running-gear parts of the base engine, quoted against the DF-M documents. |
| D2866 · D2876 | MAN High-speed | MAN / MAN B&W | High-speed marine diesels for fast craft and service vessels. Pistons, liners, injectors, turbocharger units, water pump assemblies. |
| G80ME-C / S90ME-C | MAN B&W ME-C Series | MAN / MAN B&W | Electronically controlled 2-stroke engines. HCU components, exhaust valve actuators, Alpha lubricators, cylinder liner kits. |
| L16/24 · L21/31 | MAN Four-stroke · Holeby | MAN / MAN B&W | Compact Holeby genset engines. Piston rings, cylinder liners, fuel injection pumps, charge-air cooler elements, main bearing shells. |
| L27/38 · V28/32S | MAN Four-stroke · L/V | MAN / MAN B&W | In-line and V-form medium-speed engines for genset and propulsion duty. Cylinder liner sets, fuel injection equipment, valve-drive components, cooling circuit overhaul kits. |
| L28/32 · L23/30 | MAN Four-stroke · Holeby | MAN / MAN B&W | Medium-speed auxiliary engines. Cylinder heads, connecting rod bearings, injection nozzles, turbocharger cartridges, gasket sets. |
| M20 · M25 · M32 · M43 | MaK Medium-speed | Caterpillar | MaK in-line and V-type diesels, a Caterpillar programme rather than a MAN family. Cylinder heads, valve seat inserts, injection equipment, governor parts, cooling system spares. |
| S70MC / S80MC | MAN B&W Two-stroke | MAN / MAN B&W | Large-bore slow-speed main engines. Cylinder liners, piston rings, stuffing box seals, turbocharger nozzle rings, camshaft drives. |
| S60ME-C | Two-stroke, ME-C electronic | MAN / MAN B&W | The ME-C generation replaced the camshaft with a hydraulic-electronic system on both the fuel and exhaust sides. HCU units, control valves, boosters and exhaust valve actuators have no MC-series equivalent, and an MC or MC-C part number does not necessarily work on an ME-C engine of the same bore. |
| D2676 LE4xx | In-line six | MAN Engines | The current in-line six-cylinder engine with common-rail injection, in light, medium and heavy duty versions. It took over from the D2866 and D2876. Filters, injectors, cooler elements and gasket sets are quoted against the full LE version and the serial. |
| D2862 LE44x · LE446 · LE456 | V12 | MAN Engines | The twelve-cylinder V engine, offered in light, medium and heavy versions and as a heavy-duty engine for tugs and cargo vessels. Versions such as LE446 and LE456 are separate builds of the same type, so the version number goes into every line. |
| D2868 LE4xx | V8 | MAN Engines | The eight-cylinder V engine of the same generation, in marine versions for lighter duty among others. Parts are quoted against the complete code and serial, with the duty class noted in the enquiry. |
| D2866 · D2876 LE4xx | Earlier in-line six | MAN Engines | The in-line sixes the D2676 replaced, still common on fishing vessels and workboats; the D2876 ran in LE401, LE402, LE404 and LE405 versions among others. The version is copied from the plate, and items revised since the build are named in the reply. |
| D2842 LE4xx | Earlier V12 | MAN Engines | The earlier V12 marine engine, met in versions such as LE409 and LE410. Photographs of the plate, the engine and the removed part support the enquiry when the plate is hard to read. |
| S6R-MPTK | Mitsubishi S-series 4-stroke | Mitsubishi | S6R-MPTK RFQs can include cylinder-liner kits, valve seat inserts, fuel injection pumps, governor parts and gasket sets. Confirm serial/build and generator-set evidence. |
| S6U-MPTK | Mitsubishi S-series 4-stroke | Mitsubishi | S6U-MPTK RFQs can include cylinder heads, piston kits, connecting rod bearings, injection nozzles, turbocharger parts and cooling-system spares. Confirm serial/build and generator-set evidence. |
| UEC33LSE | Mitsubishi UEC 2-stroke | Mitsubishi | UEC33LSE RFQs can include cylinder liners, pistons, exhaust valves and fuel injection pumps. Confirm serial/build, installed configuration and part evidence. |
| UEC37LA | Mitsubishi UEC 2-stroke | Mitsubishi | UEC37LA RFQs can include piston rings, cylinder heads, turbocharger nozzle rings, stuffing-box seals and crosshead bearings. Confirm build evidence. |
| UEC45LA | Mitsubishi UEC 2-stroke | Mitsubishi | UEC45LA RFQs can include liners, piston crowns, exhaust valves, fuel injection equipment and camshaft-drive components. Confirm the approved overhaul scope and build evidence. |
| UEC50LSE | Mitsubishi UEC 2-stroke | Mitsubishi | UEC50LSE RFQs can include cylinder-liner kits, piston assemblies, exhaust valve spindles and seats, turbocharger cartridges and connecting-rod bearings. |
| UEC52LA | Mitsubishi UEC 2-stroke | Mitsubishi | UEC52LA RFQs can include main bearings, crankpin shells, cylinder heads, fuel injection pumps and plungers, and governor components. Confirm build evidence. |
| UEC60LS | Mitsubishi UEC 2-stroke | Mitsubishi | UEC60LS RFQs can include pistons, liners, exhaust valves, turbocharger interface parts, stuffing-box seals and overhaul gasket kits. Confirm build evidence. |
| S90ME-C · G95ME-C | MITSUI-MAN B&W · ME-C | Mitsui E&S | Electronically controlled ME-C engines are what Mitsui's own milestone releases name: an 11S90ME-C10.5 in 2018 and a 7G95ME-C10.6-EGRTC in 2024. The Mark number after the designation and a suffix such as EGRTC are part of the type, and they decide which variant of an item fits. |
| ME-GI · ME-GIE · ME-LGIM · ME-LGIP | MITSUI-Everllence B&W · dual fuel | Mitsui E&S | Mitsui lists dual-fuel B&W engines for methane, ethane, methanol and LPG, and records the first methanol dual-fuel engine anywhere in 2015 and the first ethane dual-fuel engine anywhere in 2016. GI and LGI valve items follow the fuel suffix, which is why it belongs in the enquiry. |
| MC | MITSUI-MAN B&W · camshaft generation | Mitsui E&S | Mechanically controlled MC engines are the generation before ME, and Mitsui's main engine remote control series was supplied for both. On an MC engine the fuel pump, its roller guide and the camshaft drive do the work of the hydraulic items on an ME-C, so the generation changes the parts list as well as the type. |
| X · X-DF · X-DF-M · X-DF-A | DU-WinGD · Mitsui E&S DU | Mitsui E&S | Since April 2023 the former Diesel United works at Aioi has belonged to the group as Mitsui E&S DU, building WinGD designs. In 2026 the first WinGD engine was also completed at Tamano, a DU-WinGD 6X82DF-M-1.0 LP-SCR. A DU-WinGD plate is a WinGD design, so the X or X-DF type decides the catalogue, not the B&W one. |
| 8V 2000 M70/M72 | MTU Series 2000 | MTU | Compact 8-cylinder Series 2000 for fast craft and service vessels. Cylinder heads, fuel injectors, pistons, cooling system parts, electronic control modules. |
| 12V / 16V 2000 M70/M72/M86/M93 | MTU Series 2000 | MTU | Mid and large Series 2000 configurations. Injection nozzles, cylinder liners, turbocharger cartridges, fuel pump assemblies, gasket and seal kits. |
| 12V 4000 M70/M73/M90 | MTU Series 4000 | MTU | High-power 12-cylinder Series 4000. Injectors, cylinder heads, piston and liner kits, turbocharger components, fuel system parts, ECS control units. |
| 16V 4000 M90/M93 | MTU Series 4000 | MTU | 16-cylinder high-speed marine engine. Cylinder heads, pistons, liners, common rail fuel system components, cooling circuit parts, bearing shells. |
| 20V 4000 M90/M93 | MTU Series 4000 | MTU | 20V 4000 M90/M93 RFQs can include injectors, cylinder heads, turbocharger assemblies, piston and liner kits, fuel-system and electronic-control spares. |
| Series 4000, C variants | MTU Series 4000 | MTU | Series 4000 C-suffix builds (industrial and workboat applications), produced under the Rolls-Royce Power Systems structure. Cylinder heads, injectors, pistons, liners, turbocharger cartridges, electronic control. |
| Series 396 | MTU Series 396 | MTU | Series 396 RFQs can include injectors, cylinder heads, pistons, liners and turbocharger components. Confirm the complete model and serial/build evidence. |
| Series 8000 | MTU Series 8000 | MTU | Large-displacement high-speed marine diesel. Injector assemblies, cylinder heads, turbocharger components, fuel system, cooling system, ECU parts. |
| 6L28HX · 8L28HX · 6L28AHX | L series · 28HX | Niigata | The 28HX in-line engines are the Niigata frames met most often on propulsion and generating duty, listed with six, eight and nine cylinders and in the AHX execution as well. Cylinder covers, liners, pistons and rings, valve spindles and seats, fuel pumps, injection valves, main and connecting rod bearings are the recurring lines. |
| 20AX | AX series | Niigata | A smaller Niigata frame carried on coasters, tugs and service craft. Requests cover liners, piston and ring sets, cylinder head assemblies, fuel injection equipment and bearing shells, and the gear execution matters, since the same engine leaves the works with and without an integral marine gear. |
| 25BX · 6L25BX · 6M25BX | BX series | Niigata | The 25BX frames appear with both the L and the M letter in front of the size, and the letter is part of the identity rather than decoration. Cylinder liners, piston crowns and rings, exhaust and inlet valves with their seats, fuel pump elements and bearing shells are the usual scope. |
| 28BX · 6M28BX | BX series | Niigata | A larger BX frame, met in the M execution on Japanese-built tonnage. Requests centre on liners and pistons, cylinder covers, valve gear, injection pumps and injectors, turbocharger interface items and overhaul gasket sets. |
| 31X · 6M31X | X series | Niigata | The 31 frames sit at the larger end of the Niigata four-stroke programme. Cylinder covers with valves and seats, liners, piston assemblies, connecting rod and main bearings, fuel injection equipment and camshaft components are the lines an overhaul list on this engine holds. |
| AFT · AFTE · 28AFTE | AFTE series | Niigata | The AFT and AFTE designations belong to the older Niigata programme and are still what the plates on board read. They are worth copying letter for letter: 28AFTE and 28BX are different engines, and a designation trimmed to the size figure alone does not separate them. |
| E44 · E70B | Generator engines | Perkins | Auxiliary engines launched for generating sets on tugs, fishing vessels, ferries and inland vessels. The E44 is a four-cylinder engine and the E70B a six-cylinder one. Filters, coolant and sea water pump parts and gasket sets are quoted against the engine code and serial; the alternator is a separate line from its own plate. |
| E70-TAG | Generator engines | Perkins | The earlier generator engine from which the E70B was developed. A ship with both on board states which one each line is for, because the two engines are not assumed to share every part. |
| M130C · M135 | Perkins Sabre, naturally aspirated | Perkins | Six-cylinder naturally aspirated propulsion engines of the Sabre family. Typical lines are the sea water pump impeller, anodes, heat exchanger elements and gaskets, fuel and oil filters and the drive belt, each checked against the code and serial. |
| M185C · M215C · M225Ti · M265Ti · M300Ti | Perkins Sabre, turbocharged | Perkins | Turbocharged and intercooled Sabre propulsion engines. The letters after the number mark the version and are copied exactly. Charge-air cooler elements, turbocharger gaskets and injector items come into these enquiries next to the cooling and filter lines. |
| M92B · M90 · 4.236 | Perkins Sabre, four-cylinder | Perkins | The four-cylinder Sabre engine M92B and the engines it was built to replace, the M92, the M90 and the older 4.236. Many still work on small fishing vessels and launches; the plate and the old part are the starting point. |
| M175C · M200C · M245C | Propulsion, current range | Perkins | The six-cylinder propulsion range Perkins presented at Metstrade 2025. Parts for these engines are quoted against the full engine code and serial number, as for the older lines. |
| WAF · WF | Reverse reduction · fixed pitch | Reintjes | Hydraulically shifted ahead and astern gearboxes for fixed-pitch propellers on tugs, fishing vessels, inland vessels and ferries, WF being the small member of the line. Clutch disc sets, bearings, shaft seals and filter elements make up most requests. |
| WGF · ZWAF | Derived from WAF | Reintjes | WGF is a reverse reduction gearbox derived from WAF with an attached gear step in a flange-connected housing; ZWAF is the two-speed reverse reduction version. The extra step or second gear brings its own bearings and clutch items onto the list. |
| LAF · LF · LGF | Reduction · controllable pitch | Reintjes | Non-reversing gearboxes with a disc clutch for controllable-pitch propellers, where the blades reverse the thrust. Larger LAF sizes can carry a hollow output shaft with the connection for the CPP oil distribution box; clutch discs, bearings and oil-feed seals are the usual lines. |
| VA · SVA · SVAL · ZSVAL | Controllable pitch · VA line | Reintjes | Reduction gearboxes for controllable-pitch propellers on workboats and cargo tonnage. VA is the clutchless design on roller bearings, SVA keeps it clutchless on slide bearings, SVAL adds a disc clutch and ZSVAL is the two-speed version. On the slide-bearing frames, bearing shells and thrust items come up next to the clutch parts. |
| DLG | Twin input · single output | Reintjes | Twin input, single output reduction gearbox with hydraulically operated clutches, letting two engines drive one controllable-pitch propeller on workboats, ferries and naval and governmental vessels. Bearings are rolling or slide depending on size, so the plate decides which shells or races are asked for. |
| AF · EF · DUG | No main clutch · electric drive | Reintjes | Reduction gearboxes built without a hydraulically switchable main clutch for electric-drive propulsion, DUG being the twin-input version for ferries and workboats with electric drive. Bearings, shaft seals, filter elements and cooler items take the place of clutch work. |
| RDG · RDGL | Dredging duty | Reintjes | REINTJES Dredging Gearboxes for dredger pumps installed in ships and for underwater dredger pumps; RDGL carries a disc clutch, RDG does not. Bearings, seals and, on RDGL, the clutch pack are the recurring items. |
| WVS · WLS · VLJ | Aluminium housing | Reintjes | Weight-optimised families in aluminium-alloy housings for patrol, crew transfer and other high-speed craft, with VLJ as the reduction gearbox for waterjet propulsion. Clutch discs, bearings and housing seals are read against the exact suffix, since U-drive and offset variants differ. |
| DI16 series | Scania DI16 · current V-configuration | Scania | Main propulsion on larger workboats, pilot boats, tugs and patrol vessels, and a heavy-duty auxiliary genset drive. Cylinder heads, piston and liner kits, turbocharger cartridges, fuel injection components; the full suffix-coded type from the plate decides the parts list. |
| DI13 series | Scania DI13 · current in-line | Scania | Fitted on pilot boats and fast workboats, and as a genset prime mover. Injection pump components, turbocharger service kits, water and oil pump repair kits, gasket sets by the complete suffix-coded type. |
| DI09 series | Scania DI09 · current in-line | Scania | The smallest engine in the current marine range, block shared with Scania's road engines. Starter motors, alternators, charge-air cooler elements, seal kits; the marine-specific type code confirms the application before parts are matched. |
| DI11 · DC11 · D11 | Scania legacy in-line | Scania | An earlier in-line generation predating the current DI09/DI13/DI16 range, still met on older workboats and fishing vessels. Camshafts, valve-train components, cylinder head gasket sets — confirm the exact D/DC/DI prefix before quoting. |
| DI14 · DC14 · D14 | Scania legacy V-configuration | Scania | An earlier V-configuration block that served the role the DI16 now fills. Piston assemblies, liner kits, turbocharger components — the prefix and suffix on the plate decide the parts list, not the displacement class alone. |
| DI9 · DC9 · D9 and DI12 · DC12 | Scania legacy in-line | Scania | Older in-line blocks preceding today's DI09 and DI13 lines. Type plates on installations this old are often worn or painted over; read whatever prefix and digits remain carefully before a parts list is worked up. |
| PA4 | PA series · earlier generation | SEMT Pielstick | An earlier PA generation still met as an auxiliary and on service craft. Cylinder heads, liners, piston assemblies, injection equipment and bearing shells are the usual lines, and the works that built the engine belongs in the request beside the type, because Pielstick designs were built under licence in several countries. |
| PA5 · 6 PA5L · 8 PA5L | PA series · PA5L | SEMT Pielstick | PA5L engines are met on Japanese-built tonnage, where Niigata built to the Pielstick licence, so the same engine is described under two maker names on board. Cylinder covers, valve spindles and seats, fuel injection pumps and injectors, connecting rod and main bearings are the recurring scope. |
| PA6 · PA6B · PA6 STC | PA series · later generation | SEMT Pielstick | The later PA6 builds carry their own suffix, and B and STC are separate executions rather than trim levels. Liners, piston crowns and rings, cylinder heads, exhaust valve assemblies, injection equipment and turbocharger interface parts are the usual lines; copy the suffix off the plate. |
| PC2 · PC2-5 · PC2-6 | PC series | SEMT Pielstick | The PC2 line is the larger Pielstick family, and the figure after the dash separates generations that share a name but not every part. Cylinder covers, liner and piston sets, exhaust valve assemblies, fuel injection equipment, bearing shells and overhaul gasket sets are what enquiries on these engines ask for. |
| RT-flex | Two-stroke, electronically controlled | Sulzer | RT-flex replaced the mechanical RTA camshaft-driven running gear with a common-rail supply unit, rail unit and separate injection and exhaust valve control units — four assemblies with no RTA equivalent. An RTA part number does not cross over to an RT-flex engine on any of these. |
| D6-370 | Volvo Penta D-Series | Volvo Penta | 6-cylinder inline marine diesel. Pistons, cylinder liners, injectors, turbocharger components, heat exchanger elements, gasket sets. |
| D8-510 | Volvo Penta D-Series | Volvo Penta | In-line six-cylinder commercial inboard — the 8 is the displacement class, not the cylinder count. Cylinder heads, valve assemblies, fuel injection pumps, crankshaft bearings, intercooler components, overhaul kits. |
| D11-670 | Volvo Penta D-Series | Volvo Penta | 11-litre 6-cylinder heavy-duty marine diesel. Piston ring sets, liner kits, exhaust valve seats, injection nozzles, cooling water pump assemblies. |
| D13-800 | Volvo Penta D-Series | Volvo Penta | D13-800 RFQs can include cylinder head gaskets, connecting-rod bearings, fuel-pump plungers, turbocharger cartridges and lube-oil-system parts. Confirm build evidence. |
| D13-1000 | Volvo Penta D-Series | Volvo Penta | Top-output D13 configuration. High-performance piston crowns, exhaust valve assemblies, injection equipment, camshaft drive components, complete overhaul kits. |
| TAD series | Volvo Penta TAD Series | Volvo Penta | TAD1640, TAD1641, TAD1642, TAD1643 and related RFQs can include engine, fuel, cooling and overhaul components. Confirm the complete model suffix, serial/build and installed application. |
| TWD series | Volvo Penta TWD Series | Volvo Penta | Heavy-duty turbocharged and aftercooled industrial diesel — TWD1240, TWD1643 and variants. Cylinder liners, piston assemblies, heads, injection parts, cooling systems. |
| RATO S · RATO S+ | RATO · highly flexible | VULKAN | Highly flexible couplings on ship propulsion engines. Torque passes through elastic elements that wear in service, and the coupling is built of several segments, so an element change can be handled one segment at a time. RATO S+ is a further member of the same family; read the plus sign from the plate, as the element sets are not assumed to match. |
| RATO R · RATO R+ | RATO · high-speed drives | VULKAN | The RATO line for high-speed main and power take-off drives, with a diesel engine or an electric motor on the driving side. Element sets and bolting are read against the coupling type and size; the plate tells R from R+, and the drawing shows how the coupling is arranged between the machines. |
| VULASTIK L | VULASTIK | VULKAN | A VULKAN coupling met behind marine engines, built for bell-housing and freestanding installation. Its elements are made in natural rubber and in silicone, so two elements of the same size need not be the same part: the compound and any marking on the element or the drawing go on the request line. |
| VULKARDAN E · F · G | VULKARDAN | VULKAN | Highly flexible couplings whose plates read VULKARDAN with a letter. VULKARDAN G was developed for generators and Z-drives, and its elastomer can be changed without moving the connected machines. Rubber elements and the bolting that holds them are the usual lines; the letter on the plate selects the element design. |
| Sulzer RTA Series | Sulzer Two-stroke | Wärtsilä | Legacy slow-speed main engines — RTA48T, RTA52U, RTA58T, RTA72U. Cylinder liners, piston rings, fuel pumps, exhaust valves, crosshead parts. |
| Wärtsilä 20 | Wärtsilä Medium-speed | Wärtsilä | Compact in-line auxiliary engine. Cylinder heads, piston rings, injection nozzles, camshaft bearings, turbocharger cartridges. |
| Wärtsilä 26 | Wärtsilä Medium-speed | Wärtsilä | Auxiliary and propulsion diesel. Cylinder liners, exhaust valve assemblies, fuel pumps, crankshaft bearing shells, gasket sets. |
| Wärtsilä W32 · Vasa 32 · 32DF | Wärtsilä Medium-speed | Wärtsilä | The family began as the Vasa 32 in 1977, so one number can mean an early-1980s machine, a low-NOx build from the mid-1990s or a current-generation engine; the name on the plate and the year of build travel with every line. Cylinder head unit sets, liners and liner O-ring sets, piston crowns, skirts and ring sets per unit, injection pumps and plunger assemblies, turbocharger cartridges and nozzle rings, and on the 32DF gas admission valves and pilot injectors. |
| Wärtsilä 34DF | Wärtsilä Dual-fuel | Wärtsilä | Dual-fuel medium-speed engine. Standard mechanical parts — pistons, liners, cylinder heads, injection pumps — sourced on request. |
| Wärtsilä 46 · 46F · 46TS | Wärtsilä Medium-speed | Wärtsilä | Three machines carry this number: the original of 1987, the F generation and the TS platform. The injection equipment, turbocharging and fuels changed from one to the next, so the generation letters stay on the designation. Liners with O-rings and anti-polishing rings, piston crowns and ring sets per unit, big-end and main bearing shells, valve cages, injection pumps or common-rail components according to the build, turbocharger cartridges and charge air cooler elements. |
| Wärtsilä 50DF | Wärtsilä Dual-fuel | Wärtsilä | Large-bore dual-fuel main engine. Cylinder kits, fuel injection components, exhaust system parts, cooling circuit spares. |
| ZA40S | Sulzer / Wärtsilä | Wärtsilä | Medium-speed auxiliary and propulsion engine. Cylinder heads, fuel injection pumps, valve timing components, turbocharger parts, gasket sets. |
| 6AYL-ET | Yanmar AYL Series | Yanmar | 6AYL-ET RFQs can include cylinder heads, valve assemblies, injection pumps, heat-exchanger elements and mounting seals. Confirm the installed governor and build evidence. |
| 6AYL-HT | Yanmar AYL Series | Yanmar | 6AYL-HT RFQs can include piston rings, liner O-rings, crankshaft bearings, connecting-rod fasteners and lube-oil-system components. Confirm installed configuration. |
| 6EY22 | Yanmar EY Series | Yanmar | 6EY22 RFQs can include pistons, exhaust valves, fuel pumps, turbocharger components, governor and speed-control parts. Confirm serial/build and part evidence. |
| 6HAL-DT | Yanmar HAL Series | Yanmar | Direct turbocharged HAL auxiliary. Compact high-speed configuration. Piston ring sets, liner kits, injector nozzles, gasket sets, water pump assemblies. |
| 6MAL-HT | Yanmar MAL Series | Yanmar | 6MAL-HT RFQs can include cylinder head assemblies, valve seat inserts, injection equipment, turbocharger interface parts and overhaul kits. Confirm serial/build evidence. |
| 6N18 | Yanmar N Series | Yanmar | 6N18 RFQs can include cylinder liners, piston crowns, exhaust valve seats, fuel injectors, intercooler elements and overhaul kits. Confirm serial/build evidence. |
| 6N21 | Yanmar N Series | Yanmar | 6N21 RFQs can include cylinder heads, main bearings, camshaft-drive parts, fuel injection pumps and turbocharger cartridges. Confirm serial/build evidence. |
| 6EY18 | Yanmar EY Series | Yanmar | 6EY18, 6EY18AL or 6EY18ALW — an in-line six-cylinder four-stroke trunk-piston diesel with direct fuel injection. Give the engine designation in full, including the build suffix. |
| ZF W17200 · ZF W340 | ToughGear series | ZF | ZF presents ToughGear as cast-iron transmissions for continuous duty on tugs, ferries, offshore support vessels, fishing vessels and other workboats, with PTO, PTI and PTH options, AutoTroll for manoeuvring and positioning, and rotation concepts listed as CEW and CCEW. ZF's lubricant list covers W-prefixed units from ZF W220 upwards with variant letters C, NR, NC, DS and NR2H. Clutch plate sets, seals, bearings, filters and cooler elements are matched to the serial. |
| ZF 2050 · ZF 60000 NR2H | Numbered commercial gearboxes | ZF | ZF gearboxes without the W prefix; ZF's own list of commercial installations includes the ZF 2050 and the ZF 60000 NR2H. ZF's lubricant list groups the types from ZF 220 to ZF 83700 with suffix variants such as A, V, IV, C, U, D, NC, NR, NR2H and TS, and its hybrid range uses the A suffix for a down-angle unit. ZF data sheets rate a gearbox separately for each duty class, so the duty of the installation and the parts list number on the plate decide clutch, bearing and seal items, not the type number alone. |
| ZF 3300 PTI · ZF 8300 PTI · ZF 3000 NRD PTI | Hybrid transmissions | ZF | Gearboxes with a power take-in for an electric motor, listed by ZF for FPP, CPP and waterjet propulsion, in cast iron or light alloy housings, in parallel, A and V configurations and with DR and DL reversing layouts. ZF also supplies complete systems with flexible couplings, electric pumps, inverters and control units. The PTI and its clutch are quoted as separate lines. |
| ZF 400 IV · ZF 4 to ZF 115 | Small-medium transmission range | ZF | ZF builds its small-medium range, shown with the ZF 400 IV, in a sea-water resistant aluminium alloy housing for pleasure craft as well as commercial duty cycles. Within it, the mechanically operated M-series is also used in lifeboats, the TS series is a two-speed design, and higher-rated models carry ZF's SuperShift2 clutch control. ZF's lubricant list groups the smallest numbered types, ZF 4 to ZF 115, with variant letters including M, A, IV and TS. Because ZF names lifeboats among the uses, such a gearbox can be found aboard a merchant ship as well as on small craft. |
| BW · HBW · HSW · IRM | Other designations in ZF's list | ZF | Plates reading BW, HBW, HSW or IRM instead of a ZF-prefixed type are covered by ZF's current lubricant list alongside its own ranges. They are identified the same way — type, serial number and, where stamped, the parts list number — and items are matched to that serial rather than to a newer model. |
Service and identification notes
Wear patterns, duty context and plate-reading advice from the maker pages. They help scope a request; they are not designations.
| Topic | Context | Maker | Detail |
|---|---|---|---|
| Reading a Deutz or MWM plate | Type designation | Deutz / MWM | One engine carries two maker names: MWM built these frames and the Deutz name sits on the same programme, so a request naming only one of them is still identifiable. What is not recoverable is the execution — the letters in front of the cylinder count and the figure behind it belong together, and a code shortened to the last three digits routinely matches more than one part. |
| 6L, 6M and MG prefixes | Type designation | Niigata | The leading figure is the cylinder count and the letters that follow separate the executions, MG marking the units supplied with the gear. A designation sent without them names a family rather than an engine, and the parts that differ between executions are exactly the ones an RFQ tends to be about. |
| Scania-Vabis nameplate | Maker identity | Scania | On genuinely old installations the plate may read Scania-Vabis rather than Scania — the company's earlier name, not a different manufacturer. The same identification rule applies: full designation and serial number read exactly as stamped. |
| Natural rubber · silicone | Element compound | VULKAN | VULKAN elements are made in natural rubber and in silicone, and one is never swapped for the other on a request. The compound and any hardness marking on the old element are part of the part reference, not a detail to settle after the quote. |
Nothing matches. Send the designation from the nameplate — we also quote items that are not listed here.
This list indicates coverage. It is not stock on hand and not a claim of affiliation with any manufacturer.
In the field
Where these requests actually come from.
Photographed by Vessel Core aboard a vessel during a yard visit in September 2026 and published with the owner's permission. The images show the working conditions these requests come from. They are not a claim that Vessel Core supplied the parts shown or carried out the overhaul.
Engine supply route
Turn engine data into a clear supply route.
For engine spare parts, the commercial decision depends on more than a part number. Vessel Core keeps technical identity, vessel timing, approval context and supply route preference in one RFQ workflow.
This helps purchasing teams compare OEM and verified alternative routes while keeping the superintendent, repair yard or vessel agent aligned around the same engine data.
Engine and component identity
Maker, model, serial number, part-book position, drawing or photo evidence are matched into one technical request. On a SEMT Pielstick plate that means the whole designation and not just the family: PA4 and PA6 are separate engine families, the PA6 was built in successive variants, and the PC2 is a different engine again, so a part quoted against PA6 on its own can miss the variant the ship actually has.
Criticality and vessel timing
Planned maintenance, repair-yard schedule or time-critical operating context changes the RFQ route and response priority.
OEM and verified alternatives
Where suitable, we review OEM and verified alternative options by approval need, lead time, available documentation and commercial logic. The supply route advisor takes one line through the same factors before the RFQ is sent.
Port, ETA and delivery context
Port, ETA, company contact and agent or yard details keep the quotation aligned with the vessel schedule.
What to send
Send enough context to identify the engine, part-book position and urgency.
Engine part numbers are helpful, but we begin technical cross-checking from a serial number, nameplate photos, part-book pages, drawings and old component photos — see RFQ without a part number, and check the list against the RFQ evidence checklist before it goes in. Niigata engines make the case for photographing the plate rather than retyping it: the designation runs cylinder count, frame arrangement letter and bore-series code as one continuous string, the part follows the whole string, and a code copied out in part will not narrow the engine at all.
Vessel and timing
- Vessel name / IMO
- Company name
- Urgency level
- Port / ETA
Equipment reference
- Maker
- Model
- Serial number
- Equipment application
Part request
- Part number
- Description
- Quantity
- OEM / alternative / both
Attachments
- Photos
- Nameplate
- Drawing
- Excel list
Related categories
Connect this RFQ to the wider engine-room supply scope.
Component groups
Searching by engine component: where each group is covered in more depth.
Buyers often look for a component rather than an engine. Each group has its own identification logic, and the pages linked below go further into it than this overview does.
- Cylinder heads (cylinder covers), valves, seats and valve gear: matched to the engine build and the cylinder; see main engine piston, liner and cylinder parts
- Cylinder liners, pistons and piston rings: quoted per cylinder unit on the same page and on the maker pages reached from the model index above
- Fuel injection, from injectors and nozzles to pumps and plunger and barrel pairs: see L'Orange fuel injection parts
- Bearings: the shells, segments and bushes described above; bearings on pumps, motors and auxiliary machinery are on seals, gaskets and bearings
- Turbochargers: identified from the turbocharger's own plate, not the engine's; see turbocharger spare parts
- Governors and actuators: identified from the governor plate; see Woodward and Heinzmann
- Gaskets, O-rings and filters for an overhaul list: see filters, gaskets and seals
When the engine maker is known but the group is not, the maker reference page lists each designation the site covers together with the parts usually requested for it.
Engine RFQ FAQ
Short answers for technical buyers.
Can you quote engine parts without a part number?
Yes. Send engine maker/model, serial number, part-book page, drawing, nameplate photo or old component photos so the request can be structured.
How are time-critical engine RFQs reviewed?
Add vessel / IMO, urgency, port, ETA and operational impact so the RFQ can be reviewed around timing and supply route.
Can Vessel Core review OEM-route and verified alternative supply?
Yes. OEM-route and verified alternative supply routes can be reviewed by technical criticality, approval requirements, lead time and commercial logic.
Which markings on an old bearing shell help identify the replacement?
The part number and the bearing maker's mark on the back of the shell, the size marking (standard, undersize or oversize) and the position the shell came from: main bearing number, connecting rod or cylinder number, and upper or lower half. A clear photograph of the back of each shell is usually enough to open the line.
What if we do not know which undersize is fitted?
Send the marking from the back of a removed shell, or the size recorded in the engine's records after the last regrind. A standard shell and an undersize shell occupy the same position in the parts catalogue under different part numbers, so without one of these the line cannot be matched.
Can one enquiry cover the main engine and the auxiliary engines together?
Yes. Give each engine its own block of lines with maker, model and serial number, and mark which lines belong to which set. The quotation keeps the engines apart in the same way, so the parts for each one can be checked against its own book.
Send engine RFQ
Need marine engine spare parts?
Send engine maker, model, serial number, part number or part-book page, quantity and port/ETA. Photos, drawings, nameplates or Excel lists are welcome.
