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The ARP header bolt kit contains 3/8-inch by 1.000-inch 12-point header bolts intended to secure exhaust headers where a 12-point fastener profile is required. Supplied as a kit for header installation, these bolts are sized explicitly in the listing and serve as replacement or service hardware for header-to-manifold connections. The description focuses on precise sizing and 12-point drive geometry.
ARP 3/8in x 1.000in 12pt Header Bolt Kit
