20538845 Water Pump for Volvo Trucks

What does a water pump do?

This water pump plays a critical role in the engine cooling system by circulating coolant between the engine block and the radiator. By maintaining consistent thermal management, it prevents engine overheating and ensures the longevity of high-strength components within the powertrain.

Compatible Volvo vehicles and engines

This component is specifically designed to fit various Volvo models, including the FM series (such as FM 300, 340, 360, 380, 390, 400, 430, 440, 480) and the FMX series (including FMX II and FMX III variants like 420 LNG and 460 LNG). It is an essential replacement part for fleet managers and workshop technicians maintaining these heavy commercial vehicles.

Installation and maintenance

To ensure proper operation, technicians should inspect the pump during routine belt service. Signs of wear include coolant leakage from the weep hole or unusual bearing noise. Proper installation requires checking all seals and ensuring the drive belt tension is correct to maintain optimal flow rates.

Troubleshooting and selection

Maintaining a stable cooling cycle is vital for preventing cavitation and erosion within the engine block. For optimal performance in demanding environments, always verify fitment against specific engine requirements.

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 20538845.