Fuel pump injector oil cup for the Cummins NT855 K19 M11 diesel engine, supplied as aftermarket replacement parts. All part numbers are cross-referenced against the original components, so you can match them directly to the cups you are replacing.

Part numbers: 3083765, 3083878, 3080414, 3609014, 5648072, 4345891
Fits: Cummins NT855, K19, M11 diesel engine
Position: fuel injector assembly

What you are ordering
Price is per injector oil cup, and all part numbers are separate variants — choose the correct part number you need from the variant menu. These cups are not interchangeable, different part numbers correspond to different fitment requirements. Fitting the wrong cup will lead to sealing failure, fluid leakage and engine performance deviation.

Specifications
Material: high-strength alloy steel, precision machined
Construction: pressure sealing structure
Dimension and seating surface: to standard specification
Finish: anti-corrosion and wear-resistant treatment, each unit inspected before packing
Packing: individually protected, part number labelled on the bag

When to replace
Injector oil cups degrade under high temperature and pressure. Typical symptoms are fluid leakage around injector seat, poor sealing, coolant or fuel cross-contamination. Replace the cup promptly when damage or deformation is found during injector service.

Fitting notes
Clean the cylinder head seat and injector mounting area thoroughly before installation. Install the cup following the service procedure for the corresponding engine model. If you are unsure which cup matches your engine CPL, send us your engine serial number and we will confirm the correct part number.

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.