20850846 Compressor compatible with Volvo NH12 D12C

What does a twin cylinder compressor do?

This twin cylinder compressor serves as a critical component in the pneumatic braking system of heavy commercial vehicles. By utilizing a dual-cylinder configuration, it provides the necessary air pressure required for reliable braking performance and system stability. The unit is constructed with high-strength components to withstand continuous high-pressure operation within the engine environment.

Vehicle and engine compatibility

This specific model is designed for Volvo NH12 trucks equipped with D12C engines. It functions as an OE-equivalent part, ensuring precise integration with existing pneumatic architectures. The design accommodates heavy-duty cycles common in long-haul transport and construction applications.

Installation and maintenance guidance

Maintenance of this unit involves monitoring the water cooling ports (M16x1,5) and ensuring the air inlet (Ø35) and outlet (M26x1,5) connections remain free of debris. Technicians should verify the integrity of the through drive and the unloader port during routine inspections to prevent system pressure fluctuations.

Operational reliability

For optimal performance, ensure that the water-cooled valve plate is properly seated and that all seals are intact to prevent pressure loss within the air brake circuit.

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.