85000491 Volvo B9R D9B Twin Cylinder Compressor

What does a twin cylinder compressor do?

This twin cylinder compressor provides essential air pressure for the pneumatic braking system of heavy commercial vehicles. Engineered with a high-strength component design, it ensures reliable air generation to meet the demanding requirements of heavy-duty operation. The water-cooled design helps maintain optimal thermal stability during sustained use.

Compatibility with Volvo B9R engines

This specific unit is engineered for Volvo B9R trucks equipped with D9B engines. It is a direct replacement for components requiring specific high-output air delivery. The design includes a water-cooled valve plate and integrated ESS features to ensure seamless integration with the vehicle's existing pneumatic and cooling circuits.

Installation and maintenance guidance

Installation requires careful attention to the M26x1,5 air outlet port and M16x1,5 water inlet and outlet ports. Technicians should verify that the water cooling lines are clear and that the M12x1,5 unloader port is correctly seated to prevent pressure fluctuations within the braking system.

System integration and troubleshooting

For optimal performance, ensure the drive gear and mounting flange match the existing installation exactly to avoid system mismatch.

OE cross-reference

1300 185 001 (Twin Cylinder Compressor) is the equivalent of the Volvo OE number. This part directly replaces Volvo OE number 85000491.