VEHICLE COMPATIBILITY Direct-fit headers for 2002–2013 Chevy Silverado, Suburban, Tahoe, Avalanche; Sierra, Yukon, Yukon XL; Cadillac Escalade, ESV, EXT with 4.8L, 5.3L, 6.0L, or 6.2L LS-based V8 engines with a beveled Y-Pipe flange on the right side. BALL-AND-SOCKET RIGHT FLANGE Passenger-side outlet has a beveled flange, also called a "ball-and-socket" flange. These fit vehicles originally equipped with a donut-style gasket on the right side and the beveled style Y-pipe flange. Some vehicles may use a flat flange—please confirm your right-side flange type before ordering. ENGINEERED FOR PERFORMANCE Replaces restrictive factory manifolds with 1-5/8" mandrel-bent primary tubes to boost exhaust flow, increase horsepower, and enhance throttle response. 【HEAVY-DUTY MATERIALS】 Crafted from high-quality high temparature black coated for long-lasting resistance to heat, corrosion, and vibration fatigue. PRECISE SEALING 3/8" thick laser-cut flanges provide a secure, leak-free connection between the headers and cylinder heads, even under extreme heat. SIMPLE INSTALLATION Bolt-on installation using factory-style ports and exhaust alignment. Works with most stock Y-pipes and gaskets. NOTE ON 2014–2016 MODELS These headers do not fit Gen V LT-series engines found in 2014–2016 Suburban, Tahoe, Yukon, Escalade, or 1500 pickups. They are only compatible with 2014–2016 HD trucks that retained the LS-style engine if the right side flange has a beveled flange. Certified Automotive Experts exhaust headers are engineered for a high-performance bolt-on replacement of factory cast iron manifolds on 2002–2013 Chevrolet, G, and Cadillac full-size trucks and SUVs equipped with LS-style 4.8L, 5.3L, 6.0L, or 6.2L V8 engines. These fit engine and exhaust systems that use a beveled Y-pipe connection on the right side manifold flange. Built from premium 304 stainless steel these headers are designed to improve exhaust flow, increase horsepower, and withstand high-temperature, high-demand environments. Each set features 1-5/8” mandrel-bent primary tubes, TIG-welded seams, and 3/8" thick laser-cut flanges for durability and leak prevention. The passenger (right) side flange is a ball-and-socket style (beveled) flange, designed to mate with the factory Y-pipe that use a donut-style gasket. This design is standard across nearly all 2002–2013 GM LS truck and SUV platforms, but some rare variations may use a flat flange on the right side—please check your vehicle's flange style before purchase for best fitment assurance. These headers are compatible with standard exhaust configurations and factory-style cylinder heads, offering a seamless installation with improved throttle response and aggressive sound. Ideal for daily drivers, towing builds, and mild performance upgrades.