3803909 Volvo FH12 Engine Water Pump

What does a water pump do?

This water pump plays a critical role in the engine cooling system by continuously circulating coolant between the engine block and the radiator. By maintaining constant flow, it prevents overheating and ensures the engine operates within its intended thermal range, even under high-load conditions common in heavy commercial vehicles.

Compatible Volvo FH12 engines

This specific component is designed for Volvo FH12 models equipped with D12C engines, including variants such as FH 12/340, FH 12/380, FH 12/420, FH 12/500, FH 12/460, FH 12/390, and FH 12/430. It serves as a reliable replacement for original equipment parts in these heavy-duty applications.

Installation and maintenance

For professional installation, technicians should inspect the drive belt and pulley alignment during replacement. It is recommended to check the mechanical seal and housing for any signs of wear or leakage during routine maintenance intervals to prevent sudden system failure.

Troubleshooting guidance

Consult your authorized distributor to ensure exact fitment for your specific engine configuration.

OE cross-reference

525.03.0003 (Water Pump Water Pumps) is the equivalent of the Volvo OE number. This part directly replaces Volvo OE number 3803909.