2017-2023 Duramax L5P 4" Cat & DPF Race Pipe w/ Muffler (431031) Crate Engine ARP recommends the use of

ARP recommends the use of main studs over bolts whenever possible for several key reasons

there are five bearings in the motor and gear assembly

Loaded using HP Tuners MPVI

120″ wall thickness

2017-2023 Duramax L5P 4" Cat & DPF Race Pipe w/ Muffler (431031) Crate Engine ARP recommends the use of2017 2023 Duramax L5P 4" Cat & DPF Race Pipe w Muffler (431031) 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! IMPORTANT NOTE: These kits will