331.03.0025 Fan Belt Tensioner for Mack and Volvo

What does a fan belt tensioner do?

This fan belt tensioner plays a critical role in the engine cooling system by maintaining constant tension on the fan belt. By preventing belt slippage and vibration, it ensures the cooling fan operates at the correct speed to manage engine temperatures effectively under heavy-duty operating conditions.

Compatible vehicles and engines

The component is compatible with a wide range of heavy commercial vehicles, including Volvo models such as FH, FM, FMX, VHD, and VNL, as well as Renault Trucks models like Premium, Magnum, and Kerax. It is also fitted to Mack trucks including the Anthem, Granite, and Pinnacle models. This part is designed to work seamlessly with various engine configurations such as D13, D11, D16, MP7, and MP8.

Installation and maintenance

To ensure proper function, technicians should inspect the tensioner during regular cooling system maintenance. Maintaining correct tension is vital to prevent premature wear of the belt and other drive components. Check the compatibility list to ensure correct fitment for your specific engine code.

Troubleshooting and selection

Proper installation prevents excessive vibration that could otherwise lead to component fatigue within the cooling assembly.

OE cross-reference

331.03.0025 (Fan Belt Tensioner Fan) is the equivalent of the Dayco, Renault Trucks and Volvo OE numbers. This part directly replaces Dayco OE number APV4162. It also replaces Renault Trucks OE number 7421983655 and Volvo OE number 21983655.