20701801 Volvo NH12 D12C Twin Cylinder Compressor

What does a twin cylinder compressor do?

This twin cylinder compressor serves as a critical component within the pneumatic braking system, ensuring consistent air pressure for heavy commercial vehicle safety. Built with high-strength components, this unit is engineered to withstand the rigorous thermal and mechanical stresses found in heavy-duty engine environments.

Vehicle and engine compatibility

This specific model is compatible with Volvo NH12 trucks, including variants such as the NH 12/340, NH 12/380, NH 12/420, and NH 12/460 equipped with D12C engines. It functions effectively within the vehicle's air supply circuit to maintain optimal pneumatic performance.

Installation and maintenance guidance

Installation requires careful attention to the water cooling ports (M16x1,5) and the air inlet (Ø35). Technicians should verify that the M26x1,5 outlet and M12x1 unloader port are correctly seated to prevent pressure leaks. Regular inspection of the water-cooled valve plate is recommended to ensure long-term operational stability.

Operational reliability

For optimal performance, ensure that the through drive mechanism is properly aligned during installation to prevent premature wear of the internal components.

OE cross-reference

1300 010 001 (Twin Cylinder Compressor) is the equivalent of the Volvo OE number. This part directly replaces Volvo OE number 20701801.