85000491 Volvo FH12 D12C Twin Cylinder Compressor

What does a twin cylinder compressor do?

This twin cylinder compressor serves as a critical component within the air brake system, providing the necessary pneumatic pressure required for reliable braking performance. Built with high-strength components, it is engineered to withstand the rigorous thermal and mechanical stresses encountered in heavy commercial vehicle operations.

Vehicle and engine compatibility

This specific unit is designed for Volvo FH12 trucks equipped with D12C engines. It integrates seamlessly with the vehicle's air system, ensuring consistent pressure delivery throughout the service cycle.

Technical specifications and ports

The technical configuration includes an Ø85.00 cylinder bore and a 62 mm stroke, resulting in a swept volume of 704cm³. This model features water cooling to manage operational temperatures, an M26x1,5 air outlet port, and an M12x1,5 unloader port to maintain system stability.

Installation and maintenance guidance

Technicians should inspect the water inlet and outlet ports (M16x1,5) during installation to ensure optimal cooling flow. Regular checks of the through drive mechanism and unloader functionality are recommended to prevent system pressure fluctuations.

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.