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The PETERBILT O RING is a precision-engineered fuel cap seal designed to provide a tight
maintaining safety and accessibility on Peterbilt vehicles
It is specifically mainly used on Peterbilt 378 and 379 models
this motor mount requires no grease or maintenance and ensures easy installation
breathable mesh panels
CUMMINS BREATHER,CRANKCASE GNG The PETERBILT O RING isThe CUMMINS BREATHER, CRANKCASE is designed to release built up pressure and gases from the engine crankcase. It helps maintain proper ventilation within the engine, preventing pressure accumulation that can lead to oil leaks or engine damage, thereby supporting reliable engine performance.