85000491 Volvo NH12 D12C Twin Cylinder Compressor

What does a twin cylinder compressor do?

This twin cylinder compressor is a critical component within the air brake system of heavy commercial vehicles, providing the necessary compressed air for braking and pneumatic operations. Engineered with high-strength components, it ensures consistent pressure delivery even under demanding duty cycles. The unit features a water-cooled design to manage thermal loads effectively during continuous operation.

Vehicle and engine compatibility

Specifically designed for Volvo NH12 trucks equipped with D12C engines, this compressor ensures seamless integration with the vehicle's existing pneumatic architecture. It is built to meet the rigorous standards required for heavy-duty transport environments, maintaining stability in air pressure regulation.

Installation and maintenance guidance

Installation requires attention to the water cooling ports (M16x1.5) and the air outlet (M26x1.5). Technicians should verify that all connections are secure and that the water cooling circuit is fully operational to prevent overheating. Regular inspection of the through drive and unloader port is recommended to ensure long-term reliability.

System reliability and selection

Maintaining the integrity of the air brake system is vital for vehicle safety. When replacing this unit, ensure that all related seals and hoses are in good condition to prevent pressure drops within the pneumatic circuit.

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.