20574763 Volvo NH12 D12C Twin Cylinder Compressor

What does a twin cylinder compressor do?

This twin cylinder compressor serves as a critical component in the air brake system of heavy commercial vehicles, ensuring consistent air pressure delivery. Built with high-strength components, it manages high-pressure air production through a robust two-cylinder design, maintaining system stability under demanding operational conditions.

Vehicle and engine compatibility

This specific model is designed for use in Volvo NH12 trucks equipped with D12C engines. It is engineered to meet the rigorous requirements of heavy commercial vehicle air systems, providing reliable performance for fleet managers and workshop technicians alike.

Technical specifications and cooling

The unit features a water-cooled design with a water-cooled valve plate to manage thermal loads effectively. Technical specifications include an Ø85.00 mm cylinder bore, a 62 mm stroke, and a 704cm³ swept volume. Connections consist of an Ø35 air inlet port, an M26x1,5 air outlet port, and M16x1,5 water inlet/outlet ports.

Installation and maintenance guidance

To ensure proper installation, technicians should verify the M12x1,5 unloader port and through drive configuration. Regular inspection of the water cooling lines and air ports is recommended to maintain optimal pneumatic performance in the vehicle's braking 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 20574763.