Kooks 14+ GM 1500 Series Truck 5.3L 3in x OEM Out Cat SS Y Pipe Kooks HDR Req Plans for the garden? Beware of Jack Frost CBC News. 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!" This Part Fits: Year Make Model Submodel 2016 2018 Chevrolet Silverado 1500 Custom 2014 2018 Chevrolet Silverado 1500 High Country 2015 2018 Chevrolet Silverado 1500 LS 2014 2018 Chevrolet Silverado 1500 LT 2014 2018 Chevrolet Silverado 1500 LTZ 2015 2018 Chevrolet Silverado 1500 SSV 2014 2018 Chevrolet Silverado 1500 WT 2015 2020 Chevrolet Suburban LS 2015 2020 Chevrolet Suburban LT 2015 2016 Chevrolet Suburban LTZ 2017 2020 Chevrolet Suburban Premier 2015 2020 Chevrolet Tahoe LS 2015 2020 Chevrolet Tahoe LT 2015 2016 Chevrolet Tahoe LTZ 2015 2020 Chevrolet Tahoe PPV 2017 2020 Chevrolet Tahoe Premier 2015 2020 Chevrolet Tahoe SSV 2014 2018 GMC Sierra 1500 Base 2014 2018 GMC Sierra 1500 Denali 2014 2018 GMC Sierra 1500 SLE 2014 2018 GMC Sierra 1500 SLT 2015 2020 GMC Yukon SLE 2015 2020 GMC Yukon SLT 2015 2020 GMC Yukon XL SLE 2015 2020 GMC Yukon XL SLT