SPECIFICATION: Brand New Never Used Or Installed Type: Exhaust Header Color: Metallic Material: Stainless Steel Finish: Polished Primary Diameter: 1-5/8 in. (42mm) Collector Diameter: 2-1/2 in. (64mm) Head Flange Thickness: 3/8 in. (9.5mm) Pipe Thickness: 16 gauge (1.5mm) 100% quality assurance tested, less expensive, easier to install. for LS motor swap builds for older Chevrolet/GM/Oldsmobile/Buick models Fits GM Gen III/IV 4.8L/5.3L/5.7L/6.0L/6.2L LS engines (LS1/LS2/LS3/LS6/LS7).
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