81128514 SP1 Volvo FL12 TD123 Twin Cylinder Compressor

What does a twin cylinder compressor do?

This twin cylinder compressor is an engine-driven unit in the air brake system of heavy commercial vehicles that generates compressed air using two piston-cylinder assemblies.

Technical specifications and fitment

Specifically engineered for Volvo FL12 trucks equipped with TD123 engines, this unit features a water-cooled design to maintain thermal stability during sustained high demand. The technical specifications include a Ø88.00 cylinder bore and a 50 mm stroke, providing a swept volume of 608cm³. This configuration ensures reliable air pressure delivery for the entire pneumatic system.

Installation and maintenance

Installation and maintenance should focus on the cooling circuit integration and port alignment. The unit features an M26x1,5 air outlet port, an M22x1,5 unloader port, and M16x1,5 water inlet and outlet ports. For proper operation, technicians should verify that the water cooling lines are clear and that all connections are torqued to specification to prevent leaks.

Selection and compatibility

When replacing this unit, ensure the drive type and mounting flange match the original equipment exactly. This compressor is compatible with Volvo FL12 engines and is designed to withstand the rigorous thermal cycles found in heavy commercial vehicle applications. Check the compatibility list.

OE cross-reference

1300 050 006 (Twin Cylinder Compressor) is the equivalent of the Volvo OE number. This part directly replaces Volvo OE number 81128514SP1.