26 13 31 Cylinder Head Compatible with Detroit Diesel DD15

What does a compressor cylinder head do?

This cylinder head is the cast service component that sits on top of an air brake compressor's cylinder block and seals the compression chamber from above. It is a vital component for maintaining pneumatic pressure within the braking system, ensuring that compressed air is routed correctly through the discharge port while managing thermal loads during operation.

Compatible vehicles and engines

This part is specifically designed for Detroit Diesel DD15 engines found in heavy commercial vehicles such as Freightliner Cascadia, Freightliner Columbia, and Western Star 4900. It also fits various models like the Freightliner 122SD, Western Star 5700XE, and Freightliner Coronado. These components are essential for maintaining the integrity of the air braking system in heavy-duty applications.

Installation and maintenance

When performing installation, technicians should ensure the sealing face is free of debris to prevent gasket leaks. Because torque and tolerance values vary by compressor type, the vehicle manufacturer's current service manual should always be the reference for proper assembly. Maintaining correct mounting torque is essential for preventing air leaks from the valve seats or unloader ports.

Troubleshooting and selection

Regular inspection of the cylinder head can help identify early signs of wear or heat stress. Proper maintenance ensures long-term reliability of the compressor assembly in demanding fleet environments. Consult your authorized distributor to ensure correct fitment.