High Performance Stainless Steel Exhaust Manifold Header Y-Pipe+Black Cold Air Intake & Heat Shield Kit Fit For 1999-2006 CHEVY/GMC GMT800 Silverado/Sierra 1500

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About High Performance Stainless Steel Exhaust Manifold

Description: 100% brand new, Never been tried or installed No instructions included Professional installation is highly recommended  Air Intake System: Made Of High Quality T-6061 Aluminum Material For Strength And Durability Lightweight High Air Flow Racing Performance Spec. Design Helps Engine To Draw In More And Colder Air Resulting In Better Throttle Response And Higher Explosive Horsepower Output Improves Up To 95% Filtration Efficiency Increases 5 To 10 Horsepower, 6 To 8 Precent Of Torque, And Improve The Gas Mileage Heatshield to Block Radiant Engine Bay Heat for Improved Combustion  Dual 4-1 Stainless Steel Exhaust Header Manifolds: Made of High Quality T304 Stainless Steel Material 2 x 4-1 manifolds connecting into a 3" Y-pipe Header Inlet / Outlet Size (IN):1.734"/2.887"(Error range:0.1-0.2inch) TIG welded CNC machined flange Increase high flow air, instantly gain 10 to 15 Hp. / Tq. Bolt-on installation Improve Sound, Horsepower & Torque Mandrel-Bent For Maximum Performance TIG Weld & Polished Stainless Steel Thick Steel Flanges Head Gaskets Included. Reuse OEM Bolts & Donut Gaskets  Fitment: 1999-2006 CHEVY/GMC GMT800 SILVERADO/SIERRA 1500  Package including: 1 x Cold Air Intake Kit 1 x Exhaust Header Manifold Set ( Left & Right) With Y Pipe Hardware as Shown in the Picture Above Gasket(s) and Bolt(s) as shown in the Picture Show