3803909 Compatible Water Pump — Volvo FM12

What does a water pump do?

A water pump is a centrifugal-type component in a heavy commercial vehicle engine that continuously circulates coolant between the engine block, cylinder head, radiator, heater core, and oil cooler.

Vehicle and engine compatibility

This specific water pump is engineered for Volvo FM12 trucks, covering various configurations including the FM 12/460, FM 12/380, FM 12/340, FM 12/420, and the FM 12H series. It is specifically compatible with D12D engines to ensure optimal thermal management under heavy-duty operating conditions.

Installation and maintenance

During installation, technicians should inspect the drive belt and housing integrity to prevent future leaks. It is recommended to check for coolant weeping from the weep hole or unusual bearing noise during routine maintenance intervals to avoid engine overheating.

Troubleshooting and selection

For professional fleet management and workshop technicians, selecting high-strength components ensures long service hours in demanding environments. Consult your authorized distributor to verify 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.