PDI Big Boss Stage 1 Performance Kit for Cummins X15 and ISX

Kit Includes: 

Big Boss Performance Tuner with Mount
Big Boss Performance Intake Manifold


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. The Big Boss tuner combined with our high performing intake manifold delivers power while balancing intake air to the engine. As direct replacement products they are simple to install and utilize all factory hardware. Save now by ordering in a single kit instead of individually!


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