4" Aluminized Cat & DPF Race Pipes With Muffler 2017-2023 GM 2500/3500 6.6L DURAMAX L5P-431031 Truck Brand:CHEVROLET/GMC 2500 Outflows factory intake by 23%

Outflows factory intake by 23%

Coolant ports: M18x1

Unlike factory parts

its better throttle response and a audible turbo whistle let everyone know that's not why you bought it

Outflows Factory Intake by 20%

4" Aluminized Cat & DPF Race Pipes With Muffler 2017-2023 GM 2500/3500 6.6L DURAMAX L5P-431031 Truck Brand:CHEVROLET/GMC 2500 Outflows factory intake by 23%Description 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 Mel's system. For powerhouse performance, Mel's delivers horsepower you can hear! Features: Ease of installation Contour Bent Hangers TorcTite Clamps Factory Style