Proflow Header Extractor Flanges, Steel, 3/8 in. Thick, 1.75 in. Diameter Round Port, For Chevrolet, LS, Each

Proflow offers a variety of header flange sizes and shapes to mate your heads and headers. These 3/8 thick flanges are precision-cut to meet your ports, reduce warping, and prevent leaks. Proflow header flanges keep your tubes in place without the big price tag.