20429339 Compatible Twin Cylinder Compressor for Volvo NH12

What does a twin cylinder compressor do?

This twin cylinder compressor serves as a vital component within the air brake system of heavy commercial vehicles, providing the necessary compressed air to ensure reliable braking performance. Built with high-strength components, this unit utilizes two piston-cylinder assemblies to deliver efficient air output, ensuring rapid reservoir filling even under high demand.

Compatibility with Volvo NH12 models

This specific model is designed for Volvo NH12 (including the NH 12/420 variant) trucks. It features a water-cooled design with an Ø88.00 mm bore and a 50 mm stroke, providing a 608cm³ swept volume. The unit includes an M26x1,5 air outlet port and an M22x1,5 unloader port to facilitate precise system integration.

Installation and technical specifications

Technicians should verify all mounting interfaces and connection points during installation. This unit is water-cooled, utilizing M16x1,5 inlet and outlet ports for thermal management. Ensuring the integrity of the water jacket and checking the ESS feature functionality during assembly is essential for long-term reliability in heavy duty service.

Maintenance and troubleshooting

Regular inspection of the air inlet port (Ø29) and outlet connections helps prevent pressure drops. Maintaining clean coolant flow through the water-cooled valve plate ensures consistent performance throughout the service life of the compressor.

OE cross-reference

1300 050 001 (Twin Cylinder Compressor) is the equivalent of the Volvo OE number. This part directly replaces Volvo OE number 20429339.