331.03.0008 Belt Tensioner, Fan — VOLVO

The heavy-duty grade materials used in this belt tensioner ensure optimal tension regulation within the cooling system. This component plays a critical role in maintaining the stability of the fan belt, preventing slippage and ensuring the efficient operation of the engine cooling process under rigorous driving conditions.

331.03.0008 is the OE-equivalent belt tensioner used in VOLVO (20762060, 20935523, 20966526, 21404578, 21422767, 8149855) and RENAULT TRUCKS (7421404578, 7421422767) systems. It also serves as a reliable replacement for DAYCO APV2400 parts, providing a precise fit for heavy commercial vehicle applications.

Workshop technicians should verify the belt alignment and tension during every scheduled maintenance interval to prevent premature wear of the cooling system components. This part is engineered for straightforward assembly within the engine compartment to minimize downtime during service and ensure long-term reliability in heavy commercial vehicle fleets.

Regular inspection of the tensioner mechanism is recommended to detect any signs of excessive vibration or noise in the cooling system. Maintaining the integrity of this component helps protect other peripheral parts from stress caused by irregular belt movement.