20464403 Volvo FMX and FM 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 flow, it prevents overheating and ensures the engine operates within its designed thermal range during heavy-duty tasks.

Compatible Volvo models and engines

This component is specifically engineered for compatibility with Volvo FMX III (including 460 LNG and 420 LNG variants), Volvo FM models (such as FM 430, 380, 390, 340, 300, 480, 440, 400, and 360), Volvo FMX II (including 330, 420, 460, 540, 500, 480, 400, 520, 440, 430, 370, and 380), and Volvo FMX models (480, 440, 400). It is a reliable solution for fleet managers and workshop technicians maintaining Volvo heavy commercial vehicles.

Installation and maintenance guidance

When performing routine maintenance or engine overhauls, it is recommended to inspect the water pump alongside the timing belt or alternator belt. Technicians should check for signs of coolant leakage from the weep hole or unusual bearing noise during installation to ensure long-term system integrity.

System reliability and selection

Maintaining a stable cooling cycle is vital for preventing engine wear in construction machinery and tractor units. Consult your authorized distributor to verify specific fitment for your engine configuration.

OE cross-reference

525.03.0021 (Water Pump Water Pumps) is the equivalent of the Volvo OE number. This part directly replaces Volvo OE number 20464403.