Fuel pump gear assembly for the Cummins NT855 diesel engine, supplied as an aftermarket replacement part. All listed part numbers are cross-referenced against the original fuel pump components, so you can match them directly to the gear assembly you are replacing.

Part numbers: 3034209, 3034211, 3034219, 3034221, 3034222, 3034229, 3034236, 3034214, 3034213, 3034217

Fits: Cummins NT855 / NTA855 diesel engine Position: fuel pump drive — gear assembly

What you are ordering

Price is per gear assembly. The ten part numbers listed correspond to different gear ratios and configurations across the NT855 engine family — please confirm the exact part number you need when ordering, and we will double-check the match against your engine model or serial number before dispatch.

Specifications

Material: precision-machined alloy steel, black oxide coating Gear teeth dimensions: to original OEM specification Surface: ground and polished, ready for installation Packing: individually wrapped, part number labelled on the bag

When to replace

A worn or damaged fuel pump gear usually shows up as fuel pump whine or noise, loss of fuel pressure, hard starting, black exhaust smoke, or a check engine light. The gear drives the fuel pump camshaft — if teeth are chipped, worn or sheared, fuel delivery becomes inconsistent and engine performance drops. It is normally inspected or replaced whenever the fuel pump is removed, rebuilt or swapped.

Warranty and shipping

Covered by a 12-month warranty against manufacturing defects. Orders are dispatched within 3–7 business days; DHL / FedEx delivery takes 5–10 business days. Tracking number is sent as soon as the parcel leaves our warehouse.

Note: manufacturer names and part numbers are used for identification and cross-referencing only. We are an independent aftermarket supplier and are not affiliated with, or authorised by, the original manufacturer. Please verify the part number against your engine's parts catalogue before ordering — our team is happy to help if you send us your engine model or serial number.