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The Positive Air Shut-Off butterfly valve design simplifies the number of parts and reduces the overall size as compared to competitive units and uses aluminum and stainless components plus weatherproof electrical connectors to prevent corrosion
7L Harmonic Damper Bolt Kit (147-2503)
Designed for mechanically injected engines
9L Nozzle Set Custom Super Mental (DDP305-90NZ)
2001-2007 Duramax 4" Downpipe Back Dual Exhaust w/ Muffler (431102) Material:Aluminized The Positive Air Shut-Off butterfly2001 2007 Duramax 4" Downpipe Back Dual Exhaust w Muffler (431102) Constructed out of 16 gauge aluminized steel or T409 Stainless, this exhaust system is designed to simplify installation with included clamps, preweld contour bends and improved flanges. Enjoy a noticeable boost in performance, lowered EGTs and amplified air flow with this Flo~Pro system. For powerhouse performance, Flo~Pro delivers horsepower you can hear!