70330056 Compatible 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, providing the necessary air pressure for heavy commercial vehicle operations. Built with high-strength components, it ensures consistent air delivery to maintain reliable braking performance and system pressure under demanding conditions.

Vehicle and engine compatibility

Specifically engineered for Volvo NH12 trucks equipped with D12C engines, this unit features a water-cooled design to manage thermal loads effectively. The assembly includes a water-cooled valve plate and is compatible with Volvo OE standards to ensure seamless integration into the engine's pneumatic circuit.

Installation and maintenance guidance

Installation requires attention to the M26x1,5 air outlet port and the M16x1,5 water inlet and outlet ports. Technicians should verify that the through drive and ESS features are correctly aligned with the existing engine configuration during replacement to ensure optimal air management.

Operational checks

Regular inspection of the air inlet port (Ø35) and unloader port (M12x1,5) can help prevent premature wear. Maintaining clean coolant flow through the water ports is essential for preserving the integrity of the internal components.

OE cross-reference

1300 185 001 (Twin Cylinder Compressor) is the equivalent of the Volvo OE number. This part directly replaces Volvo OE number 70330056.