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Diesel Engine Overhaul Kits

Overhaul kits, inframe kits and rebuild kits for Cummins, Weichai, Yuchai, Baudouin, Sinotruk and FAW Xichai diesel engines

EPID supplies diesel engine overhaul kits and inframe kits for Cummins, Weichai, Yuchai, Baudouin, Sinotruk, FAW Xichai and Caterpillar engines. Every kit is quoted component by component with the OEM part numbers, so you know exactly what you are buying before it ships.

What is included in an engine overhaul kit

Component groupTypical contentsWhen it is replaced
Cylinder unitCylinder liners or kits with seals and O-rings, pistons, piston rings, piston pins and retainersLiner wear, scuffing, cavitation damage or high oil consumption
BearingsMain bearings, connecting rod bearings, thrust washers (camshaft bearings and bushings on many models)Any full rebuild - journals are measured and standard or oversize shells selected
SealingComplete gasket set including cylinder head gasket, valve stem seals, oil seals, O-ringsAlways replaced when the engine is opened
Valve train (overhaul kits)Intake and exhaust valves, valve guides, springs, seats on some kitsBurned valves, recessed seats, low compression
Optional additionsOil pump, water pump, timing gears, thermostat, injector sleevesAdded when the accessory is worn or of unknown age

Inframe kit, overhaul kit or rebuild kit?

 Inframe kitOverhaul kit (rebuild kit)
ScopeUpper engine onlyComplete engine
Engine removalNot required - serviced in the chassisEngine removed and stripped
Typical contentsLiners, pistons, rings, pins, rod bearings, gasket setEverything above plus main bearings, camshaft bearings, valves, seals
Best forWorn cylinder kit with a sound crankshaftHigh-hour engines, blue smoke, low oil pressure, full restoration

Read the full comparison: inframe kit vs overhaul kit.

Overhaul kits by engine brand

Kit pageMain engine familiesBrowse
Weichai overhaul kitsWD615, WD10, WP6, WP10, WP12all Weichai parts
Cummins overhaul kits6BT 5.9, ISB, M11, N14, NT855, K19, K50, X15all Cummins parts
Yuchai overhaul kitsYC4D, YC6J, YC6L, YC6108, YC6112all Yuchai parts
Baudouin overhaul kits4M, 6M, 12M26, 12M33, M26, M33all Baudouin parts
Sinotruk overhaul kitsWD615 HOWO, MC07, MC11, MC13all Sinotruk parts
FAW Xichai overhaul kitsCA4DL, CA6DL, CA6DM2, CA6DM3all FAW Xichai parts
Caterpillar overhaul kitsC12, C15, 3306, 3406all Caterpillar parts

How to order the right kit

  1. Send the engine model and serial number. The serial number identifies the exact build - two engines with the same model name can use different pistons or liners.
  2. Tell us the condition. Oil consumption, blow-by, coolant loss or low oil pressure each point to different components in the kit.
  3. Confirm the sizes. If the crankshaft is ground, give us the journal size so we supply standard or oversize bearings.
  4. Choose the quality grade per component. Genuine, OEM-grade or aftermarket - we show the price of each so you can mix.
  5. Confirm the paperwork. We issue the invoice with HS codes and part numbers for customs clearance.

Price, minimum order and shipping

Related pages

A complete overhaul kit contains the wear parts needed to rebuild the engine: cylinder liners and seals, pistons, piston rings, piston pins, main and connecting rod bearings, a full gasket set (including the cylinder head gasket), valve stem seals and often oil seals. Exact contents vary by engine family - the kit for a Cummins NT855 differs from a Weichai WP10 kit, so we list every component on the quotation before you order.

An inframe kit covers the upper engine only - liners, pistons, rings, bearings and gaskets - and is fitted with the engine still in the chassis. An overhaul kit (also called a rebuild kit) covers the complete engine and is used when the engine is removed for a full rebuild, adding items such as main bearings, camshaft bearings, valves and seals. See our detailed comparison.

Price depends on engine model, the number of cylinders and the quality grade (genuine, OEM-grade or aftermarket). Send the engine model and serial number and we reply with a component-by-component quotation within 12 hours - one piece minimum order, sample kits welcome.

Yes. We quote genuine/OEM-grade components matched to the original part numbers and cost-effective aftermarket equivalents, stating the grade and the price difference for each line so you can decide per component.

Heavy components are palletised, liners and pistons are individually protected against corrosion, and each kit ships with the packing list showing every part number. We ship by DHL or FedEx for single kits and by air or sea freight for container orders, on FOB, CIF or DDP terms.
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