21030340 Volvo FMX II Engine Cooling 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 fluid flow, it prevents overheating and ensures the engine operates within its designed thermal parameters even under high load conditions.

Compatible Volvo truck models

This component is specifically designed for compatibility with Volvo FMX II models including 380, 420, 460, 500, and 540 variants. It is also fitted to Volvo FM trucks such as the FM 380, FM 420, FM 460, and FM 500 models. These parts are essential for maintaining the thermal stability of these heavy commercial vehicle engines.

Maintenance and inspection

When performing routine maintenance, technicians should inspect the pump housing and seals for any signs of coolant leakage or bearing play. It is recommended to check the pump alongside the drive belt service to prevent unexpected failures in the cooling circuit.

System reliability

Proper installation ensures that the impeller maintains steady flow rates throughout varying engine speeds, protecting the engine from cavitation or overheating issues.

OE cross-reference

525.03.0005 (Water Pump Water Pumps) is the equivalent of the Volvo OE number. This part directly replaces Volvo OE number 21030340.