20478151 Volvo B9R D9B Twin Cylinder Compressor

This twin cylinder compressor provides high-capacity air generation required for heavy commercial vehicle air brake systems. Utilizing a water-cooled design, it integrates directly into the engine cooling circuit to prevent overheating during sustained heavy-load operations, ensuring consistent pressure delivery.

This component is specifically designed for Volvo B9R trucks equipped with D9B engines. It features a through-drive configuration and includes an ESS feature to enhance system reliability in demanding environments. The unit provides high air output through its 704cm³ swept volume and Ø85.00 cylinder bore.

Maintenance technicians should verify the M26x1,5 air outlet port and M16x1,5 water inlet/outlet ports during installation to ensure leak-free operation. Proper connection to the vehicle cooling system is critical for the longevity of the water-cooled valve plate and overall component performance.

Consult your authorized distributor to confirm exact fitment for your specific engine configuration.

OE cross-reference

1300 180 001 (Twin Cylinder Compressor) is the equivalent of the Volvo OE number. This part directly replaces Volvo OE number 20478151.