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don't leave to chance what you depend on most
In-frame Kit Includes:
• Precision-engineered components for consistent compression
PDI Big Boss Intake manifolds are built to increase performance and balance the air going into the engine
providing enhanced durability and a longer lifespan
PDI Big Boss Cummins X15 SOHC Stage 2 Cylinder Head 3411767 don't leave to chance whatAvailable 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: 2 Year Unlimited Mileage 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