21648708 Compatible Volvo FMX II Water Pump

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 steady flow, it prevents overheating and protects engine components from thermal stress during intensive service. This part is manufactured using high-strength components to withstand the rigorous demands of heavy commercial vehicle engines.

Compatible vehicles and engines

The component is specifically engineered to fit various Volvo models, including the FMX II series (variants 380, 420, 460, 500, 540) and the FM series (variants 380, 420, 460, 500). It provides precise fitment for these heavy-duty truck engines, ensuring seamless integration with existing cooling architectures. This part is also compatible with other Volvo truck applications.

Installation and maintenance

For optimal performance, technicians should inspect the water pump during routine belt or timing belt service intervals. It is recommended to check for signs of coolant leakage from the weep hole or unusual bearing noise. Ensuring a secure mounting and proper seal installation is vital for preventing pressure loss within the cooling circuit.

Troubleshooting guidance

Regular maintenance of the cooling system helps prevent cavitation and impeller erosion, extending the service life of the entire assembly.

OE cross-reference

525.03.0005 (Water Pump Water Pumps) is the equivalent of the Volvo OE number. This part directly replaces Volvo OE number 21648708.