PDI Big Boss Stage 3 Performance Kit for Cummins X15 and ISX cummins isx tuner Delivers the performance and reliability

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

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Trusted Quality

not only do Shift fenders fit over aggressive drive tires

Warranty: 3 Year Unlimited Mile Warranty

PDI Big Boss Stage 3 Performance Kit for Cummins X15 and ISX cummins isx tuner Delivers the performance and reliabilityKit Includes: Big Boss Performance Tuner with Mount Big Boss Performance Intake Manifold Big Boss Ceramic Coated Exhaust Manifold Performance Compound Turbo Kit Install Kit for Exhaust Manifold Install Kit for Compound Turbo Kit Stainless Spacer and Bolt Kit Available for: 2010 2021 Cummins ISX15 & X15 Engines Warranty: 1 Year Unlimited Mile Warranty PDI Big Boss Performance Packages are put together with performance, efficiency, and savings in mind.