BIG BOSS CAT C13 STAGE 1 CYLINDER HEAD Cummins ISX Parts PDI’s BIG BOSS® Aluminum Fill

PDI’s BIG BOSS® Aluminum Fill Tube and Cap design eliminates the hassle of trying to pour oil over the top of your power-steering reservoir

20% average airflow increase in key areas

20% increase in airflow over stock in key areas

Our all-new Penny Light Air Cleaner Light Bars allow you to retain and clean and smooth look during the day

The Stage 2 Performance Kit combines the popular Big Boss tuner with both our high performing intake and manifolds deliver the best mileage and pulling power while balancing air flow to and from the engine

BIG BOSS CAT C13 STAGE 1 CYLINDER HEAD Cummins ISX Parts PDI’s BIG BOSS® Aluminum FillAvailable for: 2004 2009 CAT C13 Engines Key Benefits New Casting and Components High Nickel Casting Inconel Exhaust Valves Improved Cooling Passages Stainless Retainer Clips Warranty: 2 Year Unlimited Mileage PDI Big Boss CAT C13 Stage 1 Cylinder heads are meticulously designed to surpass the most demanding expectations, making them the perfect choice for heavy duty applications in trucking, construction, agriculture, and more. They exemplify our