CUMMINS ISX INTAKE MANIFOLD CM870 PDI hub and horn assembly available

hub and horn assembly available separately

All PDI Big Boss Products are backed with unrivaled quality

Big Boss performance radiators for Peterbilt 379 models feature a dimpled tube design to allow coolant more time to cool properly for more demanding applications

Our most popular product crushes the competition by cutting oxidation faster

20% average airflow increase in key areas

CUMMINS ISX INTAKE MANIFOLD CM870 PDI hub and horn assembly availableAvailable for: 2003 2007 Cummins ISX15 Engine Warranty: 1 Year Limited Mile Warranty Factory intakes are designed in such a way that restricts the clean air flow to the engine and allow for more exhaust air (EGR) to reach the intake. The Big Boss Intake is made to allow up to 15 percent more clean air into the engine while still mounting in the factory position with the factory hardware. We do this by eliminating the necked down design that the