20845313 SP2 Compatible Volvo FMX D11B Air Compressor

What does a twin cylinder compressor do?

This twin cylinder compressor is a critical component within the pneumatic braking system, responsible for providing consistent air pressure for the vehicle's braking and suspension functions. Built with high-strength components, it ensures reliable operation under demanding heavy commercial vehicle service conditions.

Compatible vehicles and engines

This specific unit is engineered for Volvo FMX trucks equipped with D11B engines. It features a water-cooled design to manage thermal loads effectively, maintaining optimal performance during long-haul operations. The component is compatible with Volvo systems and ensures seamless integration into the existing air management architecture.

Installation and maintenance

Technicians should note the specific technical requirements for installation, including the M26x1.5 air outlet port and M16x1.5 water inlet/outlet ports. Given the Ø85.00 mm cylinder bore and 62 mm stroke, it is vital to verify that all mounting flanges and drive gear connections match the original equipment specifications to prevent system leaks or mechanical failure.

System troubleshooting

Regular inspection of the water-cooled valve plate and air unloader ports is recommended to prevent buildup or pressure drops. When replacing, always confirm that the swept volume of 704cm³ aligns with the original engine requirements to maintain consistent air delivery rates throughout the service interval.

OE cross-reference

1300 190 007 (Twin Cylinder Compressor) is the equivalent of the Volvo OE number. This part directly replaces Volvo OE number 20845313SP2.