20478151 Compatible Twin Cylinder Compressor for Volvo FM9

What does a twin cylinder compressor do?

This twin cylinder compressor serves as a critical component within the pneumatic braking system of heavy commercial vehicles. By utilizing a dual-cylinder design, it provides consistent air pressure required for reliable braking performance and auxiliary pneumatic functions. The unit is engineered with high-strength components to withstand the intense thermal and mechanical stresses found in heavy-duty duty cycles.

Vehicle and engine compatibility

This specific model is compatible with Volvo FM9 trucks, including variants such as the FM 9/260, FM 9/380, FM 9/340, and FM 9/300 equipped with D9A engines. It is an essential replacement part for maintaining the integrity of the vehicle's air supply system.

Technical specifications and installation

The technical configuration includes a Ø85.00 cylinder bore and a 62 mm stroke, providing a swept volume of 704cm³. For proper installation, technicians should note the M26x1,5 air outlet port and M16x1,5 water inlet/outlet ports. This water-cooled unit requires careful attention to the cooling circuit to prevent overheating during continuous operation.

Maintenance guidance

Regular inspection of the air unloader port and the water-cooled valve plate is recommended to ensure optimal pressure regulation and prevent system leaks.

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.