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The CP-20 oil ring assemblies feature a 20-degree ear angle
the stock air filter clogs quickly requiring it to be serviced
New valve guides
The CP3 pump can withstand high pressures
Wehrli Custom Fab WCF100192-RED 4" Intake Kit W/Air Box - WCFab Red intercooler The CP-20 oil ring assembliesUpgrade the intake in your GM 6. 6L Duramax today with the Wehrli Custom Fab WCF100192 RED 4" Intake Kit W Air Box WCFab Red from GAP. This high flow, fabricated aluminum intake pipe and air box enclosure with dry filter assembly replaces the restrictive plastic factory parts on your diesel for improved engine performance. This design significantly increases airflow to your turbo producing improved horsepower and torque, quicker throttle response, and