Kooks Headers and Exhaust has been the leader in the High Performance Exhaust Industry for over 50 Years! Since 1962, Kooks takes pride in offering the best Headers and complete exhaust systems for your street, race and off-road applications. We have won hundreds of championships and set countless records in the NHRA, IHRA, NMCA, NMRA, NASCAR, NASA, SCCA and many other racing organizations. Now with three generations of family leadership, we are proud to say that all of our products are handcrafted here in the USA and we are proud to still be independently owned and operated. And don't forget, "Get Kookin with KOOKS!". 3in. x 2-3/4in.(OEM) GREEN Catted Stainless Steel Y-Pipe. 2019-2023 GM 1500 Series Truck 5.3L. 3in. 16GA 304 Stainless Steel Construction. 3in. 16GA 304 Stainless Steel Construction. KOOKS GREEN Cats 400 cell High Flow Catatlytic Converters. Ball and Socket style Connection to Headers. Must be used with Kooks Long Tube Headers. Includes Clamps. Outlet connects to OEM Exhaust re-using OEM Hardware.. 3" x 2-3/4"(OEM) GREEN Catted Stainless Steel Y-Pipe. 2019-2023 GM 1500 Series Truck 5.3L. 3" 16GA 304 Stainless Steel Construction. 3" 16GA 304 Stainless Steel Construction. KOOKS GREEN Cats 400 cell High Flow Catatlytic Converters. Ball and Socket style Connection to Headers. Must be used with Kooks Long Tube Headers. Includes Clamps. Outlet connects to OEM Exhaust re-using OEM Hardware.. 3" x 2-3/4"(OEM) GREEN Catted Stainless Steel Y-Pipe. 2019-2023 GM 1500 Series Truck 5.3L. 3" 16GA 304 Stainless Steel Construction KOOKS GREEN Cats 400 Cell High Flow Catatlytic ConvertersBall and Socket style Connection to Headers Requires Kooks Long Tube Headers Includes Clamps Outlet connects to OEM Exhaust re-using OEM Hardware . 3in. x 2-3/4in.(OEM) GREEN Catted Stainless Steel Y-Pipe. 2019-2023 GM 1500 Series Truck 5.3L. Must be used with Kooks Long Tube Headers. Includes Clamps. Outlet connects to OEM Exhaust re-using OEM Hardware.. 3" x 2-3/4"(OEM) GREEN Catted Stainless Steel Y-Pipe. 2019-2023 GM 1500 Series Truck 5.3L. Must be used with Kooks Long Tube Headers. Includes Clamps. Outlet connects to OEM Exhaust re-using OEM Hardware.. Kooks 2019+ GM 1500 Series Truck 5.3L 3in x OEM Outlet GREEN Cat SS Y Pipe Kooks HDR Req. 3in. Stainless GREEN Catted Y-Pipe. 2019-2023 GM 1/2 Ton Truck 5.3L.. 3" Stainless GREEN Catted Y-Pipe. 2019-2023 GM 1/2 Ton Truck 5.3L.. Kooks Headers And Exhaust Make The Most Power In The Industry. Kooks System Are Specifically Designed For Maximum Power. Kooks Products Are Made Of T304 Air Craft Quality Steel. Limited Lifetime Warranty To Original Purchaser. 3 Generations Being Family Owned And Operated. Every Kooks Product Is Dyno And Race Tested. Kooks Products Fit And Install The Best. 3in. x OEM ULTRA GREEN Catted Y-Pipe. 100 Percent Manufactured In The USA. 3" x OEM ULTRA GREEN Catted Y-Pipe. 3in. x OEM Y-Pipe. 3" x OEM Y-Pipe

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