The Big Boss Intake Manifold was designed to eliminate restriction to the air intake. 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 factory gives you and replace it with an open design. The manifold will allow for cooler intake air temperatures and an additional 15-20hp. Like all PDI products, they are designed to make more horsepower and create more efficiency so you save money while making the drive more enjoyable.
For more information about our Big Boss Intake Manifolds, or for help with any of your performance needs, contact your nearest PDI dealer or call PDI at 800-511-1231.
Available for Cummins ISX 2003-2010 Engines

CALL 800-511-1231

*NOT Approved for Sale or Installation in the State of California


Established in 2001, PDI is a manufacturer of high-quality, diesel performance products. From the sale to installation, you can count on PDI to provide the very best in customer service and advice. We are dedicated to discovering the best possible combinations of high performance parts and accessories to help you achieve your diesel efficiency and power goals.