Fuel pump gear drive shaft assembly for Cummins NT855 diesel engines, aftermarket replacement PT fuel pump transmission driving parts. All part numbers are cross-referenced against OEM specs for direct matching.

Part numbers: 3016610, 3016609, 3016611, 3028372
Fits: Cummins NT855 diesel engine
Position: PT fuel pump gear transmission driving assembly

What you are ordering
Price is per gear drive shaft assembly. All part numbers are separate variants, please select the correct PN from variant options. These gear drive shaft assemblies are not interchangeable. Different part numbers have different gear tooth profiles, shaft spline specifications and mounting dimensions. Wrong selection will cause gear meshing failure, abnormal grinding noise, loss of fuel pressure and PT pump lock-up.

Specifications
Material: high strength alloy steel
Structure: integrated drive gear and shaft assembly
Gear tooth & spline dimension: calibrated to OEM standard
Finish: quenched and precision ground, wear-resistant & anti-corrosion treatment, runout tested before packing
Packing: individual protective box, marked with part number

When to replace
Gear drive shaft suffers tooth chipping, spline wear and shaft scoring after long running hours and contaminated lubrication. Common failure signs: abnormal noise inside PT fuel pump, fluctuating fuel supply pressure, insufficient fuel delivery, pump jam. Replace the matched gear drive shaft assembly together when wear is detected, and inspect the mating driven gear and bearings at the same time.

Fitting notes
Strictly confirm gear parameters and spline size before assembly. Do not mix drive shaft assemblies of different part numbers. Follow Cummins service manual for gear backlash adjustment and torque requirement. If you are not sure which PN matches your engine CPL, send us engine serial number for confirmation.

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.