26 13 11 Cylinder Head for Detroit Diesel Engines

What does a compressor cylinder head do?

A compressor cylinder head is the cast service part that closes off the top of an air brake compressor's cylinder block and carries the seats for the inlet and discharge valves. It holds the piston's compressed air without leaking, routes it out through the discharge port, and carries away part of the compression heat from the body.

Compatible vehicles and engines

This component is designed for heavy-duty service in vehicles including Freightliner (Cascadia, Columbia, Coronado, etc.), Western Star (4900, 5700XE, etc.), Kenworth (W900, T800), and Peterbilt (378, 379) models. It is specifically engineered to work with Detroit Diesel engines such as the DD13, DD15, DD16, and 60 Series. It is also fitted to Mercedes-Benz trucks.

Installation and maintenance

To ensure proper operation, technicians should verify the bolt hole pattern and discharge port thread type before installation. Maintaining the sealing face flatness is critical to prevent air leaks. Proper torque application according to engine service manuals is required to ensure a reliable seal within the pneumatic system.

Selection guidance

Check the compatibility list to confirm fitment for your specific engine configuration.

OE cross-reference

26 13 11 (Compressor Cylinder Head) is the equivalent of the Knorr-Bremse OE number. This part directly replaces Knorr-Bremse OE number K011809.