PDI BIG BOSS CUMMINS X15 SOHC STAGE 2 CYLINDER HEAD Performance Tuner Built to withstand the toughest

Built to withstand the toughest heat cycle conditions

How do I use Rebel Hydro Guard

Delivers the performance and reliability you’ve come to expect from PDI

Made to withstand the toughest heat cycle conditions adding reliability with performance and efficiency

PDI BIG BOSS CUMMINS X15 SOHC STAGE 2 CYLINDER HEAD Performance Tuner Built to withstand the toughestAvailable for: 2010 2025 Cummins ISX and X15 Engines Key Benefits High Nickel Casting Inconel Exhaust and Intake Valves Stainless Steel Fire Ring Enhanced Airflow and Combustion Chambers Improved Cooling Passages Made in the USA Warranty: 18 Month Unlimited Mile Warranty PDI Big Boss Cummins ISX X15 Stage 2 Cylinder heads are meticulously designed to surpass the most demanding expectations, making them the perfect choice for heavy duty applications in