A4412000301 Compatible Water Pump — Mercedes-Benz

What does a water pump do?

This water pump serves as a critical component within the engine cooling system, responsible for continuously circulating coolant between the engine block and the radiator. By maintaining constant fluid movement, it prevents overheating and ensures the engine operates within its ideal thermal range, even under high load conditions typical of heavy commercial vehicles.

Compatible Mercedes-Benz models and engines

This component is specifically engineered for Mercedes-Benz OM 442 engines. It is compatible with various Mercedes-Benz models including the 1431, 1426 F, 1726, 1926, and 2426 series, among others. This part ensures reliable performance across diverse truck and heavy-duty applications.

Installation and maintenance guidance

For optimal performance, technicians should inspect the water pump during routine belt service. It is recommended to check for signs of coolant leakage from the weep hole or unusual bearing noise. Replacing the pump alongside timing or alternator belts can prevent unexpected engine overheating caused by component failure.

Troubleshooting and selection

Consult your authorized distributor to ensure exact fitment for your specific engine configuration.

OE cross-reference

525.01.0031 (Water Pump Water Pumps) is the equivalent of the Mercedes-Benz OE number. This part directly replaces Mercedes-Benz OE number A4412000301.