99-06 Chevy&GMC Suburban Silverado Sierra 1500 Yukon 4.8L 5.3L Stainless Exhaust Manifold Headers

Color: MetallicSurface Finish: Mirror PolishMandrel Bent TubingOptional EGR Fittings w/Block off PlateCNC Machined FlangesPolished Stainless SteelStandard Graphite Manifold Gaskets Outlet Size: 2.5"Primary Tube Size: 1.66"Head Flange Thickness: 7/16"Outlet Flange Thickness: 3/8"Restricted States: CaliforniaOxygen Sensor Location: No Port LocationFits these vehicles: for Chevy Avalanche 1500 2002-2006 5.3L for Chevy Silverado 1500 1999-2006 4.8L, 5.3L(Except for 2002 Chevy Silverado 1500 5.3L,2001 for Chevrolet Silverado 1500) for Chevy Suburban 1500 2000-2006 5.3L for Chevy Tahoe 2000-2006 4.8L, 5.3L for GMC Sierra 1999-2006 4.8L, 5.3L for GMC Yukon 2001-2006 4.8L, 5.3L for GMC Yukon XL 2000-2006 5.3L Note: Some 1999-2002 Chevy Trucks also have Air Injection. These headers do not have Air Injection fittings.Package included:1 X Header Exhaust System, Gasket(s) and Bolt(s) as shown in the Picture above (ALL if any is necessary for Installation)