Mitsubishi engine models covered
Spare parts supply across the Mitsubishi marine diesel programme — from large-bore UEC slow-speed 2-stroke main engines to the S-series medium-speed auxiliary units used in generator and propulsion applications.
UEC33LSE
Bore 330 mm slow-speed 2-stroke main engine. Compact long-stroke variant used on smaller bulk carriers and coastal cargo vessels. Cylinder liners, pistons, exhaust valves, fuel injection pumps.
UEC37LA
Bore 370 mm slow-speed 2-stroke. Medium-output main engine for handysize and supramax bulk carriers. Piston rings, cylinder heads, turbocharger nozzle rings, stuffing box seals, crosshead bearings.
UEC45LA
Bore 450 mm slow-speed 2-stroke main engine. Common on panamax-class bulk carriers and tankers. Full overhaul component range — liners, piston crowns, exhaust valves, fuel injection equipment, camshaft drives.
UEC50LSE
Bore 500 mm long-stroke 2-stroke. Higher-output main engine variant. Cylinder liner kits, piston assemblies, exhaust valve spindles and seats, turbocharger cartridges, connecting rod bearings.
UEC52LA
Bore 520 mm slow-speed 2-stroke main engine for larger bulk carriers and general cargo vessels. Main bearings, crankpin shells, cylinder heads, fuel injection pumps and plungers, governor components.
UEC60LS
Bore 600 mm large-bore slow-speed 2-stroke. Installed on larger bulk carrier and tanker tonnage. Pistons, liners, exhaust valves, turbocharger interface parts, stuffing box seals, overhaul gasket kits.
S6U-MPTK
Medium-speed 6-cylinder in-line 4-stroke auxiliary diesel. Widely used as generator prime mover. Cylinder heads, piston kits, connecting rod bearings, injection nozzles, turbocharger parts, cooling system spares.
S6R-MPTK
Higher-output S-series medium-speed 4-stroke auxiliary diesel. Common generator unit on bulk carriers and tankers. Cylinder liner kits, valve seat inserts, fuel injection pumps, governor parts, gasket sets.
Mitsubishi parts we source
Planned overhaul components, running spares, and emergency breakdown parts — structured by system and component group for Mitsubishi UEC 2-stroke main engines and S-series 4-stroke auxiliaries.
- Cylinder liners & piston rings
- Piston crowns & skirts
- Cylinder heads & head gaskets
- Exhaust valves, seats & spindles
- Fuel injection pumps & plungers
- Fuel injector nozzles & holders
- Turbocharger cartridges & nozzle rings
- Main bearings & crankpin shells
- Crosshead bearings & pins
- Camshaft bearings & drive components
- Stuffing box seals & piston rod packings
- Connecting rod bearings & bolts
- Governor & speed control parts
- Overhaul gasket kits & seal sets
Competitive alternative to Mitsubishi MHI OEM pricing.
Mitsubishi Heavy Industries OEM pricing is the benchmark — we offer both genuine OEM supply and quality alternative routes that can significantly reduce part costs without compromising on dimensional accuracy or material specification.
Cost-Aware Sourcing Options
Verified alternative parts for Mitsubishi UEC and S-series engines can support budget control where approval requirements permit. Both OEM and alternative tracks are available.
OEM or Alternative — Your Choice
For class-surveyed overhauls or warranty-sensitive repairs, we supply genuine Mitsubishi MHI OEM components. For running spares and planned maintenance intervals, quality alternative routes are available at your discretion.
Lead Time Confirmed at RFQ Stage
Lead time, availability and freight options are confirmed at RFQ stage based on part specification, approval requirements, vessel ETA and destination port.
Technical Part Identification
Missing part numbers or incomplete spares lists are not a barrier. We identify correct Mitsubishi components from the engine type designation, bore and stroke specification, build year, and component description. Nameplate photographs accepted as reference.
Port-Aware Delivery Planning
Delivery is aligned with your vessel's next port call. Whether you need Mitsubishi UEC parts in Rotterdam, Fujairah, Singapore, or Yokohama, we coordinate supply against your vessel schedule to minimise idle time.
Urgent Breakdown Priority
Main engine failures on vessels with Mitsubishi UEC slow-speed engines receive priority RFQ handling. Urgent RFQs trigger priority sourcing review, freight coordination, and direct commercial follow-up based on vessel urgency and port timing.
Mitsubishi parts — common questions
Do you supply both OEM and alternative parts for Mitsubishi UEC engines?
Yes. We source genuine Mitsubishi Heavy Industries OEM parts and verified quality alternative components for the UEC series 2-stroke slow-speed engines and the S-series medium-speed auxiliaries. Alternative parts are selected on a case-by-case basis where quality and approval status permit, typically delivering significant budget control versus OEM list pricing while maintaining full dimensional and material specification compliance.
What Mitsubishi engine models do you cover?
We cover the Mitsubishi UEC series 2-stroke slow-speed main engines including UEC33LSE, UEC37LA, UEC45LA, UEC50LSE, UEC52LA, and UEC60LS variants, as well as the S-series medium-speed auxiliaries including S6U-MPTK and S6R-MPTK. Parts are available for current production and legacy engine configurations across the Mitsubishi marine diesel programme.
How quickly can Mitsubishi spare parts be delivered?
Lead time and freight options are confirmed at RFQ stage based on part availability, vessel ETA, destination port and urgency level.
Can you source Mitsubishi parts if I only have the engine type designation?
Yes. If exact part numbers are not available, our technical procurement team can identify correct Mitsubishi components from the engine type designation, bore and stroke specification, build year, and component description. Photographs of the installed part or engine nameplate are also accepted as reference. No formal parts list is required to submit an RFQ.
Submit your RFQ now.
Send your Mitsubishi spare parts request — vessel name, engine model (e.g. Mitsubishi UEC45LA), part numbers or descriptions, and port/ETA. We handle the sourcing; you get a structured quote.