Complete PT fuel injection pump assembly for Cummins NT855 diesel engine, aftermarket replacement fuel system unit. This PT pump controls fuel pressure and delivery timing for reliable engine operation. All part numbers are cross-referenced against OEM specifications for direct fitment.

Part numbers: 4295919, 4951398, 4951434, 4951438, 4951457, 4951519, 4025675, 3165356, 3419261, 3655104
Fits: Cummins NT855 diesel engine
Position: Main fuel injection pump assembly

What you are ordering
Price is per complete PT fuel pump assembly. All part numbers are separate variants, please select the correct PN from variant options. These PT pumps are calibrated differently and are NOT interchangeable. Wrong selection will lead to hard starting, power shortage, abnormal smoke, high fuel consumption and unstable engine speed.

Specifications
Type: PT (Pressure-Time) fuel injection pump
Material: cast iron housing with precision internal components
Calibration: fuel delivery, governor and AFC settings to standard specification
Pressure & timing: factory inspected and calibrated
Finish: anti-corrosion coating, leakage tested before packing
Packing: securely packed in wooden case, marked with part number

When to replace
PT fuel pump failure usually shows symptoms: difficult cold start, unstable idle, black or white smoke, insufficient power, surging RPM, fuel leakage from pump body. Replace the whole pump assembly when internal parts are heavily worn and rebuild cannot restore performance.

Fitting notes
Clean fuel lines, fuel tank and fuel filter thoroughly before installation. Bleed air from fuel system after installation. Follow Cummins NT855 service manual for pump mounting, speed adjustment and AFC setting. 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.