2007-2013 GMC Chevy Sierra Silverado 4.8 5.3 6.0 6.2 LS1 LS2 LS3 LS6 LS7 1-7/8'' Long Tube Header Black $300 Header Style:Full-length Header Material:Steel Header Finish:Temporary non-high temperature paint Weld-Up:No Primary Tube Outside Diameter (in):1 7/8 in. Flange Style:Standard Collector Attachment:Slip fit Collector Diameter:3.000 in. Collector Reducers Included:No Cylinder Head Port Shape:Round Tuned:No Flange Thickness (in):3/8 in. Bolts/Studs Included:No Gaskets Included:Yes Crossover Pipe Included:No Quantity:Sold as a pair.