26 03 12 Compressor Valve Plate — Detroit Diesel S60

What does a compressor valve plate do?

This compressor valve plate is a critical component within the air brake compressor assembly, responsible for regulating the flow of compressed air through the cylinder head. Manufactured from high-strength components, this part is engineered to withstand continuous opening-and-closing loads and high discharge temperatures common in heavy commercial vehicle pneumatic systems.

Compatible vehicles and engines

The component is compatible with Detroit Diesel Series 60 and S60 engines found in various heavy commercial vehicle models, including Freightliner (Columbia, Cascadia, Century Class, Coronado, Classic XL, FLD120, Argosy), Kenworth (W900, T600, T800), Peterbilt (379, 378), Western Star (4964, 4900), Sterling (AT9500, A9500, LT9500), and International (9200, 9400) trucks. It also serves Bendix and Caterpillar systems.

Installation and maintenance

For professional installation, ensure the compressor's cylinder count and head casting number match the replacement part. During assembly, it is vital to verify that the port layout and thickness align with the original specification. Head bolts should be tightened in stages using a crosswise sequence to ensure even pressure across the seating surface.

Selection guidance

To ensure exact fitment, technicians should always verify the specific compressor model and OE reference rather than relying solely on vehicle model names. Consult your authorized distributor for detailed application guidance.