21221878 Volvo FM Compatible Water Pump

What does a water pump do?

This water pump serves as a critical component within the engine cooling system, responsible for circulating coolant between the engine and the radiator. By maintaining consistent fluid flow, it prevents engine overheating and ensures stable thermal management during heavy-duty operation.

Compatible Volvo FM series engines

This component is specifically designed to fit a wide range of Volvo FM series vehicles, including models such as the FM 480, FM 440, FM 380, FM 340, and FM 300. It is also compatible with Volvo FM II variants like the FM 500, FM 420, and FM 460 LNG, ensuring broad coverage across various engine configurations within the series.

Installation and maintenance guidance

For professional installation, technicians should inspect the drive belt and mounting surfaces during replacement. Ensuring proper alignment and using high-strength components helps prevent common issues like bearing play or coolant leaks from the mechanical seal. It is recommended to check the cooling system integrity during routine maintenance intervals.

System reliability

Maintaining a functional water pump is essential for preventing engine temperature spikes and protecting internal engine components from thermal stress.

OE cross-reference

525.03.0006 (Water Pump Water Pumps) is the equivalent of the Volvo OE number. This part directly replaces Volvo OE number 21221878.