20774294 SP1 Compressor compatible with Volvo B13R

What does a twin cylinder compressor do?

This twin cylinder compressor plays a critical role in the pneumatic system of heavy commercial vehicles by producing the compressed air required for brake operation. Built with high-strength components, it is engineered to withstand the intense thermal and mechanical stresses found in heavy-duty engine environments.

Compatible vehicles and engines

This specific model is designed for Volvo B13R vehicles equipped with D13B engines. It features a water-cooled design with M16x1,5 inlet and outlet ports, and includes an ESS feature to ensure optimal system performance. The unit operates with a through drive mechanism to maintain consistent air pressure delivery.

Installation and maintenance

For proper installation, technicians should verify the water cooling connections and ensure the M26x1,5 air outlet port is correctly seated. Given the Ø85.00 bore and 56 mm stroke, it is essential to match the mounting flange and drive gear configuration during replacement to avoid system mismatch.

Troubleshooting guidance

When troubleshooting air pressure drops, inspect the water-cooled valve plate and unloader ports for any signs of debris or wear. Maintaining clean coolant flow and checking the integrity of the air ports is vital for long-term reliability in heavy commercial service.

OE cross-reference

1300 190 003 (Twin Cylinder Compressor) is the equivalent of the Volvo OE number. This part directly replaces Volvo OE number 20774294SP1.