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9L Main Stud Kit (247-5403)
ARP recommends the use of main studs over bolts whenever possible for several key reasons
120″ wall thickness
there are five bearings in the motor and gear assembly
2017-2023 Duramax L5P 4" Cat & DPF Race Pipe w/ Muffler (431031) Crate Engine 9L Main Stud Kit (247-5403)2017 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