21521355 Compatible Volvo FMX D11B Air Compressor

What does a twin cylinder compressor do?

This twin cylinder compressor plays a critical role in the pneumatic braking system of heavy commercial vehicles by providing a consistent supply of compressed air. Built with high-strength components, it is designed to withstand the rigorous thermal and mechanical demands of heavy-duty engine operation.

Compatibility with Volvo FMX engines

This specific unit is compatible with Volvo FMX trucks equipped with D11B engines. It features a water-cooled design with a water inlet and outlet port size of M16x1,5, ensuring optimal temperature regulation during high-load cycles. The unit provides an air outlet port of M26x1,5 and an air unloader port of M12x1,5 to ensure seamless system integration.

Installation and technical specifications

For workshop technicians performing installation, it is vital to verify that the water cooling connections and the through drive mechanism match the existing engine configuration. Proper torque application on the M26x1,5 outlet and ensuring the air inlet port (Ø35) is free of debris are essential steps for maintaining system integrity and preventing pressure leaks.

Maintenance and system checks

Regular inspection of the water-cooled valve plate and the unloader port is recommended to prevent buildup that could affect compression efficiency.

OE cross-reference

1300 240 003 (Twin Cylinder Compressor) is the equivalent of the Volvo OE number. This part directly replaces Volvo OE number 21521355.