21388369 Volvo B9L D9B Twin Cylinder Compressor

What does a twin cylinder compressor do?

This twin cylinder compressor is a vital component within the pneumatic air brake system, designed to provide high-capacity air generation for demanding heavy commercial vehicle applications. By utilizing a water-cooled design, the unit integrates directly into the engine cooling circuit to prevent overheating during sustained heavy-load operations, ensuring consistent pressure delivery.

Compatibility with Volvo B9L

Specifically designed for Volvo B9L trucks equipped with D9B engines, this component ensures reliable air supply for the entire braking system. It features a Ø85.00 mm cylinder bore and a 62 mm stroke, providing a swept volume of 704cm³ to meet the high air demand of large vehicles.

Installation and maintenance

For workshop technicians, installation involves connecting the M16x1,5 water inlet and outlet ports to the engine cooling system. The unit features an M26x1,5 air outlet port and an M16x1,5 unloader port to facilitate proper pneumatic routing. Regular checks of the water-cooled valve plate and port connections are recommended to maintain optimal performance.

Reliable performance for heavy duty

Maintaining steady air pressure is critical for heavy-duty braking reliability. This unit is an ideal replacement for those requiring high-output twin cylinder configurations in heavy commercial vehicle fleets.

OE cross-reference

1300 180 001 (Twin Cylinder Compressor) is the equivalent of the Volvo OE number. This part directly replaces Volvo OE number 21388369.