20850846 Volvo VHD D12 Twin Cylinder Compressor

What does a twin cylinder compressor do?

This twin cylinder compressor serves as a critical component in the pneumatic braking system, providing the necessary air pressure for heavy commercial vehicle operations. Built with high-strength components, this unit is engineered to withstand demanding duty cycles in harsh environments. It features a water-cooled design to maintain optimal operating temperatures during continuous use.

Vehicle and engine compatibility

This specific model is compatible with Volvo VHD trucks equipped with D12 engines. The design incorporates an ESS feature and a water-cooled valve plate to enhance system reliability. It is engineered to meet the rigorous demands of the heavy commercial vehicle sector.

Installation and maintenance guidance

Installation and maintenance require careful attention to the port connections, including the M26x1.5 air outlet and M16x1.5 water ports. Technicians should ensure all connections are secure to prevent pressure loss or coolant leaks. Regular inspection of the through drive and unloader ports is recommended to maintain peak performance.

Operational performance

When replacing this unit, verify that the swept volume of 704cm³ matches the original equipment requirements to ensure correct air delivery rates.

OE cross-reference

1300 180 003 (Twin Cylinder Compressor) is the equivalent of the Volvo OE number. This part directly replaces Volvo OE number 20850846.