20478151 Compatible Volvo VNL D12 Twin Cylinder Compressor

What does a twin cylinder compressor do?

This twin cylinder compressor serves as a critical component within the pneumatic braking system of heavy commercial vehicles. It utilizes a dual-cylinder design to ensure consistent air pressure delivery for the braking and suspension systems. Built with high-strength components, it is designed to withstand the rigorous thermal and mechanical demands of heavy-duty engine environments.

Vehicle and engine compatibility

Specifically designed for compatibility with Volvo VNL trucks equipped with D12 engines, this unit ensures reliable air production. The design incorporates a water-cooled valve plate to manage operating temperatures effectively, maintaining system integrity during long-haul operations. It is compatible with Volvo systems.

Installation and maintenance

Installation requires attention to the M26x1.5 air outlet port and the M16x1.5 water inlet/outlet ports. Technicians should verify that the through drive and ESS features align with the existing engine configuration to ensure seamless integration. Regular inspection of the air inlet port (Ø35) is recommended to prevent debris buildup.

Performance monitoring

To maintain optimal performance, ensure the cooling system flow is unobstructed through the M16x1.5 ports. Monitoring air output stability helps in early detection of wear within the cylinders or valve plates.

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.