331.03.0004 Volvo Mack Renault Fan Belt Tensioner

What does a fan belt tensioner do?

This fan belt tensioner plays a critical role in the engine cooling system by maintaining the required tension on the fan belt. By ensuring consistent pressure, it prevents belt slippage and reduces vibration within the cooling assembly, which is vital for maintaining stable engine temperatures during heavy-duty operation.

Vehicle and engine compatibility

This component is specifically designed for a wide range of heavy commercial vehicles, including Volvo models such as the FH16, FM, FMX, and VNL series. It is also compatible with Mack Anthem and Granite trucks, as well as various Renault Trucks models like the Premium, Magnum, and Kerax. These parts are engineered to meet the rigorous demands of high-output engines including the D13, D16, and MP8 series.

Installation and maintenance

For proper installation and maintenance, technicians should inspect the tensioner during every cooling system service. Ensuring that the mounting surfaces are clean and that the pulley rotates freely without excessive play will help prevent premature wear of the belts. Maintaining correct tension is essential to prevent overheating in heavy commercial vehicle engines.

System reliability

Check the compatibility list to ensure exact fitment for your specific engine model.

OE cross-reference

331.03.0004 (Fan Belt Tensioner Fan) is the equivalent of the Dayco and Volvo OE numbers. This part directly replaces Dayco OE number APV1115. It also replaces Volvo OE numbers 20491753, 21145261, 21155561, 21631484.