7200 921 004 Detroit Diesel Compatible Compressor Crankshaft

What does a compressor crankshaft do?

The compressor crankshaft serves as a critical component within the air brake compressor, responsible for converting engine rotary motion into the reciprocating motion required for compression. This part is essential for maintaining the structural integrity and operational efficiency of the pneumatic system in heavy-duty applications.

Engine and vehicle compatibility

This component is designed for compatibility with Detroit Diesel DD13, DD15, DD16, and 60 Series engines. It is widely used in various heavy commercial vehicle models including Freightliner (Cascadia, Columbia, Coronado, etc.), Western Star (47X, 4900, 5700XE, etc.), Kenworth (T600, T800, W900), Peterbilt (379, 378), International (9200, 9400), and Sterling (LT9500, A9500) trucks. It also fits Mercedes-Benz applications.

Installation and maintenance

For optimal performance and to prevent oil leakage or excessive vibration, technicians should inspect the crankshaft during routine compressor maintenance. When replacing this component, ensure that all connecting rod bearings and seals are inspected to maintain the correct axial and radial clearances required by the manufacturer's service manual.

System reliability

Selecting a high-strength crankshaft ensures the longevity of the air brake system under heavy load conditions. Check the compatibility list to ensure exact fitment for your specific engine configuration.