Water pump assembly for Cummins NT855, NTA855 diesel engines, aftermarket cooling system component that circulates coolant through the engine block and radiator to maintain proper working temperature. All part numbers are cross-referenced against OEM specs for direct matching.

Part numbers: 3022474, 3801708, 3024386, 3051408, 3801788, 3051352, 3051356, 3150132, 3801595, 3801620, AR87192
Fits: Cummins NT855, NTA855 diesel engine
Position: Engine cooling circulation assembly

What you are ordering
Price is per water pump assembly. All part numbers are separate variants, please select the correct PN from variant options. These water pumps are not interchangeable. Different part numbers have different impeller structure, inlet/outlet port layout and pulley configuration. Wrong selection will lead to insufficient coolant flow, engine overheating and leakage.

Specifications
Material: high-strength cast iron housing
Structure: integrated pump body, impeller, shaft and mechanical seal
Flow and pressure rating: matched to OEM specification
Finish: precision machined sealing surface, leakage pressure tested before packing
Packing: individual protective case, marked with part number

When to replace
Replace the water pump when shaft seal leaks, bearing is noisy, impeller is corroded or damaged. Common failure signs: coolant leakage, abnormal noise from pump housing, engine overheating. Replace the pump together with coolant during cooling system overhaul.

Fitting notes
Strictly confirm engine serial number before ordering. Do not install water pumps of different part numbers interchangeably. Follow Cummins service manual for torque specification and cooling system bleeding after installation. If you are not sure which PN matches your engine, 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 share your engine model or serial number.