20842990 SP1 Volvo FM9 D9B Twin Cylinder Compressor

What does a twin cylinder compressor do?

This twin cylinder compressor serves as a critical component within the air brake system, ensuring reliable air pressure delivery for heavy commercial vehicle braking and pneumatic functions. Engineered with high-strength components, this unit is designed to withstand the rigorous thermal and pressure demands of heavy-duty operation.

Compatibility with Volvo FM9 engines

This specific model is designed for use in Volvo FM9 trucks equipped with D9B engines. It features a water-cooled configuration to maintain optimal operating temperatures during sustained high-demand cycles. The unit is characterized by a Ø85.00 mm cylinder bore, a 62 mm stroke, and a swept volume of 704cm³, ensuring efficient air production.

Installation and technical specifications

For professional installation, technicians should verify the water inlet and outlet ports (M16x1,5) and the air outlet port (M26x1,5) against the existing vehicle setup. Because this is a gear-driven unit with an ESS feature, it is essential to ensure the drive gear and mounting interface match the original equipment to prevent timing or mounting issues.

Maintenance and selection guidance

When replacing this compressor, always verify the cooling type and port sizes to avoid system mismatching. Consult your authorized distributor for further assistance.

OE cross-reference

1300 180 002 (Twin Cylinder Compressor) is the equivalent of the Volvo OE number. This part directly replaces Volvo OE number 20842990SP1.