525.01.0031 Mercedes-Benz compatible water pump

What does a water pump do?

This water pump plays a critical role in the engine cooling system by circulating coolant between the engine and the radiator. Manufactured with high-strength components, it is engineered to withstand the high heat and pressure typical of demanding heavy-duty duty cycles. Reliability in coolant circulation is essential for preventing engine overheating and ensuring long-term operational stability.

Compatible Mercedes-Benz vehicles and engines

This component is compatible with several Mercedes-Benz models, including the MK series (such as 1831 LAS and 2531 L), SK series (including 1929 AK and 3329 K), OH models, and bus variants like the O 303 and O 404. It is specifically designed to fit engines such as the OM 441, OM 441 LA, and OM 442.

Installation and maintenance

To ensure proper performance, technicians should inspect the pump during routine belt service. When replacing the unit, it is recommended to check the condition of the seals and hoses to prevent future leaks. Maintaining correct coolant levels and using high-quality fluids will help extend the service life of the mechanical seals and bearings.

Troubleshooting and selection

Regular monitoring for signs of coolant leakage from the weep hole or unusual bearing noise can prevent unexpected engine failure. Selecting a pump that matches your specific engine code ensures perfect fitment and sustained cooling performance throughout its service life.

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 4412000301.