21648716 Water Pump for Volvo FMX D11B Engines

What does a water pump do?

This water pump serves as a critical component within the engine cooling system, facilitating the constant circulation of coolant between the engine block and the radiator. By maintaining steady thermal regulation, it prevents engine overheating and ensures the longevity of heavy-duty engine components.

Vehicle and engine compatibility

This unit is specifically compatible with Volvo FMX models including the 370, 410, 430, 450, and 330 variants featuring D11B engines. It is also fitted to Volvo FM series trucks such as the FM 330, FM 370, FM 410, and FM 450. These parts are engineered to meet the rigorous demands of construction machinery and heavy commercial vehicles.

Installation and maintenance guidance

For professional technicians, we recommend inspecting the pump during routine belt service intervals. It is vital to check for signs of coolant leakage from the weep hole or unusual bearing noise to prevent sudden system failure. Proper installation ensures consistent flow rates through the cooling circuit.

Troubleshooting and replacement

When replacing this component, ensure all connections are secure and check the condition of the drive belts. Maintaining a clean cooling system helps prevent premature wear of the impeller and mechanical seals.

OE cross-reference

525.03.0009 (Water Pump Water Pumps) is the equivalent of the Volvo OE number. This part directly replaces Volvo OE number 21648716.