81125437 Compatible Twin Cylinder Compressor — Volvo

What does a twin cylinder compressor do?

This twin cylinder compressor serves as a critical component in the pneumatic braking system, providing the necessary air pressure for heavy commercial vehicle operations. Designed for high-duty cycles, it utilizes a water-cooled design to manage thermal loads effectively, ensuring consistent performance under demanding service conditions.

Compatibility and engine fitment

This unit is compatible with Volvo FL12 vehicles equipped with TD123 engines. It features a 608cm³ swept volume, an Ø88.00 mm cylinder bore, and a 50 mm stroke to maintain optimal air delivery. The assembly includes an air unloader port (M22x1,5) and specialized water inlet/outlet ports (M16x1,5) to support efficient cooling.

Installation and maintenance

For professional installation, technicians should verify the mounting flange and port alignment. Ensure that the water cooling lines are properly connected to the M16x1,5 ports and that the air outlet (M26x1,5) is secured to prevent leaks. Regular inspection of the through drive and valve plate integrity is recommended during scheduled maintenance intervals.

Troubleshooting guidance

When replacing this unit, it is vital to match the technical specifications of the removed component to ensure perfect integration with the existing pneumatic system.

OE cross-reference

1300 050 004 (Twin Cylinder Compressor) is the equivalent of the Volvo OE number. This part directly replaces Volvo OE number 81125437.