Wärtsilä engine models covered
Spare parts supply across the Wärtsilä medium-speed programme and legacy Sulzer two-stroke engines — serving main propulsion, generator drive, and dual-fuel applications.
Wärtsilä 20
Compact in-line auxiliary engine. Cylinder heads, piston rings, injection nozzles, camshaft bearings, turbocharger cartridges.
Wärtsilä 26
Auxiliary and propulsion diesel. Cylinder liners, exhaust valve assemblies, fuel pumps, crankshaft bearing shells, gasket sets.
Wärtsilä 32
Widely installed main and auxiliary engine. Piston crowns, cylinder heads, injection equipment, turbocharger nozzle rings, governor parts.
Wärtsilä 34DF
Dual-fuel medium-speed engine. Standard mechanical parts — pistons, liners, cylinder heads, injection pumps — sourced on request.
Wärtsilä 46 · 46F
High-output main propulsion engine. Connecting rod assemblies, cylinder liners, exhaust valve cages, turbocharger stages, charge air components.
Wärtsilä 50DF
Large-bore dual-fuel main engine. Cylinder kits, fuel injection components, exhaust system parts, cooling circuit spares.
Sulzer RTA Series
Legacy slow-speed main engines — RTA48T, RTA52U, RTA58T, RTA72U. Cylinder liners, piston rings, fuel pumps, exhaust valves, crosshead parts.
ZA40S
Medium-speed auxiliary and propulsion engine. Cylinder heads, fuel injection pumps, valve timing components, turbocharger parts, gasket sets.
Wärtsilä marine spare parts supply scope
Running spares, planned overhaul components and time-critical spare parts for common Wärtsilä and Sulzer engine requests, organised by system for clearer RFQ review.
- Cylinder heads & head gaskets
- Cylinder liners & O-ring sets
- Piston crowns, skirts & piston rings
- Exhaust valves, cages & seat rings
- Fuel injection pumps & plungers
- Fuel injector nozzle assemblies
- Turbocharger cartridges & nozzle rings
- Main bearings & crankpin shells
- Connecting rod bolts & big-end bearings
- Camshaft bearings & drive gear sets
- Charge air cooler elements
- Governors & speed control components
- Cooling water pump impellers & seals
- Overhaul gasket kits & seal sets
Multi-route review for Wärtsilä spare parts RFQs.
For standard stocked lines, Wärtsilä Online is a known channel. For non-stocked items, obsolete parts or time-critical supply, Vessel Core can review OEM-route and verified alternative supply options according to approval needs, documentation and vessel timing.
Faster for Non-Stock Items
Parts not held in Wärtsilä's distribution network — obsolete models, lower-volume variants, or legacy Sulzer components — are sourced through our alternative supply network with confirmed lead times provided at RFQ stage.
OEM or Alternative — Your Choice
OEM-route review is available for class-critical work. Verified alternative components can be reviewed for running spares, with documentation requirements checked at RFQ stage.
Route and Budget Review
Verified alternative supply routes for Wärtsilä running spares can be reviewed when buyer approval allows it. Pricing, lead time, documentation and technical route notes are provided at RFQ stage.
Legacy Sulzer Support
Legacy Sulzer RTA and ZA40S requests often require a separate availability and documentation review. Vessel Core can assess OEM-route and verified alternative supplier options at RFQ stage, depending on part evidence, approval needs and vessel timing.
Port-Aware Delivery
Supply route, handover option and freight timing are reviewed against confirmed RFQ details, vessel ETA, port context, documentation needs and part availability before quotation. No fixed delivery commitment is made before availability and route are confirmed.
EU-Registered Entity
Vessel Core OÜ is registered in Estonia (Reg. 17028043, VAT EE102773714) with clear company details, RFQ contact and buyer verification routes.
Wärtsilä parts — common questions
Can you review verified alternative routes for Wärtsilä engines?
Yes. We review OEM-route and verified alternative routes for medium-speed Wärtsilä engine requests. Alternative routes are checked case by case for running spares and planned maintenance, while OEM-route review can be requested for class-surveyed or documentation-sensitive work.
What Wärtsilä engine models do you cover?
We cover the Wärtsilä medium-speed range including Wärtsilä 20, 26, 32, 34, 34DF, 46, and 50DF engines in both main propulsion and generator set configurations. The legacy Sulzer RTA two-stroke series and ZA40S medium-speed engines are also within scope.
Is Vessel Core faster than ordering through Wärtsilä Online for non-stocked items?
For standard stocked items, Wärtsilä Online can be competitive on lead time. However, for non-stocked, obsolete, or lower-volume parts, our multi-source supply review can provide additional route options for lead-time and budget review. We provide a confirmed lead time at RFQ stage so you can make an informed decision.
Can you supply Wärtsilä DF engine parts — including gas system components?
We supply standard mechanical and fuel system spare parts for Wärtsilä dual-fuel (DF) engines — pistons, liners, cylinder heads, injection components, and turbocharger parts. For gas-specific components such as gas admission valves and gas control units, we assess availability on an item-by-item basis at RFQ stage.
Submit your RFQ now.
Send your Wärtsilä spare parts request — vessel name, engine model (e.g. Wärtsilä 32), part numbers or descriptions, and port/ETA. Vessel Core reviews the supply route and prepares a structured supply quotation.