20845313 SP2 Volvo B11R D11A Twin Cylinder Compressor

What does a twin cylinder compressor do?

This twin cylinder compressor is a critical component of the pneumatic braking system, engineered to provide consistent air pressure for heavy commercial vehicle operations. Built with high-strength components, this unit ensures reliable performance under demanding thermal conditions through its integrated water-cooling system.

Vehicle and engine compatibility

This specific model is designed for Volvo B11R trucks equipped with D11A engines. It features a 704cm³ swept volume and is compatible with the original engine specifications to maintain system integrity. The unit includes an ESS feature and a water-cooled valve plate to optimize thermal management during continuous operation.

Installation and maintenance

For proper installation, technicians should verify that the water inlet and outlet ports (M16x1.5) match the existing cooling lines. Ensure the through drive mechanism and mounting flange align perfectly with the engine's configuration to prevent vibration or leaks. Regular inspection of the air inlet port (Ø35) and unloader port (M16x1.5) is recommended to maintain optimal airflow.

Selection guidance

When replacing this unit, it is vital to match the drive gear and port locations exactly to avoid system mismatching. Consult your authorized distributor for exact fitment verification.

OE cross-reference

1300 190 007 (Twin Cylinder Compressor) is the equivalent of the Volvo OE number. This part directly replaces Volvo OE number 20845313SP2.