21521355 Volvo VHD D13 Twin Cylinder Compressor

What does a twin cylinder compressor do?

This twin cylinder compressor serves as a critical component within the pneumatic braking system, providing the necessary air pressure for heavy commercial vehicle operations. Built with high-strength components, it ensures consistent performance under demanding thermal and mechanical loads in heavy duty environments.

Vehicle and engine compatibility

Specifically engineered for Volvo VHD trucks equipped with D13 engines, this unit integrates seamlessly into the engine's air supply architecture. The design supports efficient air delivery for heavy commercial vehicle braking and pneumatic control systems.

Technical specifications and cooling

The assembly features a water-cooled configuration to maintain optimal operating temperatures, utilizing M16x1.5 water inlet and outlet ports. Technical specifications include a Ø85.00mm cylinder bore, a 56mm stroke, and an M26x1.5 air outlet port. The unit is equipped with an ESS feature and a water-cooled valve plate to enhance durability.

Installation and maintenance guidance

To ensure proper installation, technicians should verify the M12x1.5 unloader port alignment and check all connections to the cooling circuit. Regular inspection of the air inlet and outlet ports is recommended to prevent leaks and maintain peak system pressure.

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.