331.02.0007 MAN Compatible Fan Belt Tensioner

The fan belt tensioner is a critical mechanical component in the cooling system of heavy commercial vehicles that keeps the belt driving the fan and fan pulley at the correct tension. By applying constant, balanced pressure, it automatically takes up the slack that develops as the belt stretches due to heat and mileage. This ensures the fan turns at its designed speed to maintain optimal engine temperatures.

This component is specifically designed for MAN vehicles, including the LION'S REGIO series (L 360, L 400, C 350, L 390, L 440, L 430, 400, C 400, L 320, 360, C 360) and the LION'S COACH series (C 320, C 360, C 400, C 430, C 480, C 440, 480, L 440, L 400, L 430, L 505). It is also suitable for MAN HOCL models (18.350, 25.400, 25.430, 18.360 HOCL, 18.400 HOCL, 18.430 HOCL, 18.440 HOCL, 24.440 HOCLN, 24.480 HOCLN, 18.480 HOCL) equipped with D2676 engines.

For proper installation and maintenance, technicians should verify that the pulley alignment is correct and that the spring preload meets manufacturer specifications. Regularly inspecting the tensioner ensures that the cooling system functions without interruption and prevents premature belt wear or slippage during heavy-duty operation.

Check the compatibility list to ensure correct fitment for your vehicle.

OE cross-reference

331.02.0007 (Fan Belt Tensioner Fan) is the equivalent of the Dayco and MAN OE numbers. This part directly replaces Dayco OE number APV3027. It also replaces MAN OE numbers 51958007445, 51958007478.