21218878 Water Pump for Volvo FH Series

What does a water pump do?

This water pump serves as a critical component within the engine cooling system, ensuring the continuous circulation of coolant between the engine block and the radiator. By maintaining consistent flow, it prevents overheating and ensures the engine operates within its thermal design limits during heavy-duty service cycles.

Compatible Volvo truck models

This component is specifically engineered for use in Volvo FH and FH II trucks, including models such as the 440, 520, 480, 400, 500, 420, 460, 540, 380, and the LNG variants. It is a vital part for maintaining the longevity of these heavy commercial vehicle engines.

Installation and maintenance

When performing engine maintenance, it is recommended to inspect the pump alongside the timing belt or alternator belt. Technicians should check for signs of coolant leakage from the weep hole or unusual bearing noise to prevent unexpected downtime. Consult your authorized distributor.

Troubleshooting and selection

Proper selection ensures correct fitment for your specific engine configuration. Maintaining a healthy cooling system is essential for preventing thermal stress on engine components.

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 21218878.