For 99-06 Tahoe/Yukon 4.8L/5.3L/6.0L V8 S. Steel Long Tube Exhaust Header Pipe. Made of High Quality T-304 Stainless Steel with Computerized Mandrel-Bends for Strength and Durability i. Maximizing Smoothest High Exhaust Air Flow Rate. High Performance Full Length Racing Spec. Design, Produces the Most Top End Power. Offers the Best Flow Characteristics for the Engine at High Engine Speeds. Increase High Flow Air, Instantly Gain 10 -15 Hp. Inlet/ Outlet: 1-3/4″ OD / 3″ OD. 16 Gauge Wall Piping. TIG Welded CNC Machine Flange. 3/8 Thick Header Flanges. WHAT’S IN PACKAGE. 1 X Header Kit (Left & Right). Hardware as Shown in the Picture Above. 99-06 Chevy Silverado 1500 4.8L 5.3L 6.0L V8. 00-06 Chevy Tahoe 4.8L 5.3L V8. 02-06 Chevy Avalanche 1500 5.3L V8. 00-06 Chevy Suburban 1500 5.3L 6.0L V8. 99-06 GMC Sierra 1500 4.8L 5.3L 6.0L V8. 00-06 GMC Yukon 4.8L 5.3L 6.0L V8. 99-06 GMC Sierra 2500 5.3L 6.0L V8. Do Not Fit with 4WD Models. Professional Installation is Highly Recommended. Installation Instruction is NOT Included. The person that is purchasing this product makes the following representations and acknowledges and agrees to the following terms and conditions. This off-road race only product (“this Product”) is designed and intended for use in organized, amateur and professional racing events, but is limited to closed-course racing and open-course racing that is formally sanctioned by a recognized racing organization involving the motor vehicle in which it is installed (the “Vehicle”). It is not for use on public highways or roads nor is it for recreational off-road use other than solely for competition purposes. Use of this Product for purposes other than solely for competition is a violation of federal law and may violate applicable state or local environmental, motor vehicle and other laws. The User warrants that this Product shall only be used in sanctioned closed-circuit events. That use of this Product may make the Vehicle unfit or unsafe for the purposes intended or for any purpose and cause personal injury, property damage or death. That the installation of this Product, improper installation of this Product, use of this Product with other components or failure to use this Product in conjunction with other components, could result in or cause personal injury, property damage or death. THIS PRODUCT IS FOR COMPETITION RACETRACK USE ONLY. ALL OTHER USES ARE CONTRARY TO FEDERAL LAW. Sign up to our Newsletter. Add our Store to your Favorites to receive newsletters about new items & special promotions! Subscribe To Our Newsletter. Thank You For The Opportunity To Serve You!