20478151 Volvo FM9 D9B Twin Cylinder Compressor

What does a twin cylinder compressor do?

This twin cylinder air compressor plays a critical role in the pneumatic braking system of heavy commercial vehicles, ensuring consistent air pressure delivery. Built with high-strength components, it is engineered to withstand rigorous operational cycles and thermal stress within the engine compartment.

Compatible Volvo FM9 engines

This unit is specifically compatible with Volvo FM9 trucks equipped with D9B engines, including variants such as the FM 9/260, FM 9/380, FM 9/340, and FM 9/300. It serves as a reliable replacement for original equipment components in these specific heavy-duty applications.

Installation and technical specifications

The assembly features a water-cooled design with a water-cooled valve plate to manage operating temperatures effectively. Technical specifications include a Ø85.00 cylinder bore, a 62 mm stroke, and an M26x1.5 air outlet port. For proper maintenance, technicians should regularly inspect the M16x1.5 water inlet and outlet ports to prevent blockages.

Maintenance and troubleshooting

When replacing this component, ensure the through drive and ESS features are correctly aligned with the existing engine configuration to maintain optimal system pressure and longevity.

OE cross-reference

1300 180 001 (Twin Cylinder Compressor) is the equivalent of the Volvo OE number. This part directly replaces Volvo OE number 20478151.