20733974 Volvo FH12 D12C Single Cylinder Compressor

What does a single cylinder compressor do?

This single cylinder compressor serves as a critical component in the pneumatic braking system of heavy commercial vehicles. It utilizes a water-cooled design to maintain optimal operating temperatures during high-demand cycles, ensuring consistent air pressure delivery for the braking circuit. Built with high-strength components, this unit provides the durability required for demanding long-haul operations.

Vehicle and engine compatibility

This compressor is specifically engineered for Volvo FH12 models equipped with D12C engines, including variants such as the 400, 420, 440, 460, 480, 500, 520, and 540. It is also compatible with various other Volvo FH series trucks. The unit features an M26x1,5 air outlet port and an M12x1,5 unloader port to ensure seamless integration with existing pneumatic lines.

Installation and maintenance

For professional installation, technicians should verify the water inlet and outlet connections (M16x1,5) and ensure the through drive mechanism is correctly aligned. Regular inspection of the water-cooled valve plate and air inlet ports is recommended to prevent system contamination or pressure drops. Check the compatibility list for precise fitment.

Troubleshooting and selection

Maintaining proper coolant flow and checking for air leaks at the M35 air inlet port can prevent premature wear of the internal piston and cylinder assembly.

OE cross-reference

1300 025 002 (Single Cylinder Compressor) is the equivalent of the Volvo OE number. This part directly replaces Volvo OE number 20733974.