Genuine and OEM-quality spare parts for the Weichai WP12 — an 11.6-litre inline-six used in heavy trucks, marine craft (WP12C) and gensets. We source by part number from verified channels in Turkey and deliver with export documents to CIS and worldwide. Reply with an availability check within 2–4 business hours.
The WP12 (11.596 L, inline-6, turbocharged-intercooled, roughly 336–460 hp depending on rating) is one of Weichai's most widely deployed engines — heavy trucks, marine propulsion as the WP12C, and standby / prime gensets. Different ratings share many components but not all, so the serial number matters.
IWH sources WP12 parts by part number — cylinder head, liners, pistons, crankshaft, Bosch injectors, turbocharger and full overhaul kits — and ships from Istanbul with clean export documents. Genuine, OEM-equivalent and verified aftermarket, confirmed before you commit.

Send the exact rating and serial number — WP12 truck, marine (WP12C) and genset builds differ.
| Variant | Typical use |
|---|---|
| WP12 (truck) | Heavy trucks & tractors |
| WP12C (marine) | Marine propulsion & auxiliary |
| WP12D / genset | Standby & prime power |
| WP12 Euro III / V | Emissions-build variants |
| WP12 NG (gas) | Gas / dual-fuel where fitted |
Open what you need or send a part number for the fastest availability check.
| Category | Typical parts |
|---|---|
| Cylinder block & head | Cylinder head assemblies, liners, head gaskets, valves & guides |
| Crank & pistons | Crankshafts, pistons, rings, connecting rods, main & rod bearings |
| Fuel system | Bosch / common-rail injectors, high-pressure pumps, fuel lines, ECU |
| Air & boost | Turbochargers, intercoolers, air filters |
| Cooling & lubrication | Water pumps, oil pumps, thermostats, oil coolers, hoses |
| Sealing & overhaul | Gasket sets, oil seals, full overhaul / rebuild kits |
| Filtration | Oil, fuel, water & air filters |
| Electrical | Sensors, starters, alternators, ECU & wiring components |
Weichai WP12 in heavy trucks, marine propulsion and auxiliary, and power-generation gensets.
A part number gets you the fastest answer. No part number? The engine model, serial number and a nameplate photo let us identify it for you.
We do not supply counterfeit parts. Where exact matches are scarce, we propose verified equivalents and confirm specifications before you commit.
Weichai / Baudouin parts sourced through verified distributor channels where available.
Original-equipment quality at a lower cost, matched to your engine specification.
Quality aftermarket or verified equivalents, confirmed with you before ordering.
Multiple items grouped into one shipment from our Istanbul base.
Commercial invoice, packing list and available origin / manufacturer documents.
Delivery to CIS, Middle East and worldwide — fastest route prioritised for engines down.
Browse the Weichai range, the models we quote most and related brands.
Yes — truck WP12 and marine WP12C parts, including cylinder heads, injectors, turbochargers and overhaul kits. Send a part number or serial.
Truck, marine (WP12C) and genset builds share many parts but differ in cooling, mounting and rating — the serial number lets us match exactly.
Yes — piston/liner sets, bearings, gasket sets and seals as a kit or by individual part number.
For part-number requests we reply with an availability check within 2–4 business hours.
Yes — export documents from Istanbul and delivery to CIS, Kazakhstan and worldwide.
Yes — message us on WhatsApp with the engine model and part number for the fastest response.
Engine model, serial number, quantity and destination — we check distributor availability and prepare an export-ready quote.
Request a quote