LS1/LS6 Chevrolet round port header exhaust flanges. These flanges come as a pair and are designed for 1-7/8" primaries, laser-cut from heavy-duty 3/8" thick 304 stainless steel for superior resistance to warping from high heat, and comes with a limited lifetime warranty.
CA Residents: WARNING: Cancer and Reproductive Harm www.P65Warnings.ca.gov
