20773343 Volvo VNL D12 Twin Cylinder Compressor

What does a twin cylinder compressor do?

This twin cylinder compressor serves as a vital component in the pneumatic braking system, ensuring consistent air pressure for heavy commercial vehicle safety. Engineered with high-strength components, it is designed to withstand rigorous operating conditions while maintaining stable pressure output through its dual-cylinder configuration.

Compatible vehicles and engines

This unit is specifically compatible with Volvo VNL models equipped with D12 engines. The assembly features a water-cooled design with a water-cooled valve plate to manage thermal loads effectively during continuous operation. It includes an M26x1,5 air outlet port and M16x1,5 ports for air unloader and water connections.

Installation and maintenance

For proper installation, technicians should verify the through-drive compatibility and ensure the M16x1,5 water inlet and outlet ports are correctly seated. Regular inspection of the Ø35 air inlet port and unloader connections is recommended to prevent pressure drops in the braking circuit.

Operational guidance

Maintaining correct coolant flow through the water ports is essential for the longevity of the internal components. Consult your authorized distributor to ensure correct fitment for your specific engine configuration.

OE cross-reference

1300 180 001 (Twin Cylinder Compressor) is the equivalent of the Volvo OE number. This part directly replaces Volvo OE number 20773343.