20774383 SP1 Volvo B11R D11A Twin Cylinder Compressor

What does a twin cylinder compressor do?

This twin cylinder compressor is a vital component within the air brake system of heavy commercial vehicles, providing the necessary pneumatic pressure for reliable braking performance. Built with high-strength components, it is engineered to withstand the demanding thermal and mechanical stresses found in heavy-duty engine environments.

Vehicle compatibility and engine fitment

This specific unit is designed for Volvo B11R trucks equipped with D11A engines. It features a water-cooled design to maintain optimal operating temperatures and includes an integrated ESS feature to enhance system efficiency. It is compatible with Volvo OE requirements for engine-driven air supply.

Installation and technical specifications

The assembly features an air inlet port of Ø35 and an air outlet port of M26x1.5, ensuring precise pneumatic integration. For proper installation, technicians should verify the water inlet and outlet ports (M16x1.5) and confirm that the through drive mechanism matches the engine's timing gear. Regular inspection of the water-cooled valve plate is recommended to ensure sustained performance.

Maintenance and replacement guidance

When replacing this unit, it is essential to match the technical specifications such as the 636cm³ swept volume and mounting flange to ensure perfect fitment without modifications.

OE cross-reference

1300 190 012 (Twin Cylinder Compressor) is the equivalent of the Volvo OE number. This part directly replaces Volvo OE number 20774383SP1.