Blue Devil Head Gasket Sealer – 1 US Quart (946mL) | Permanent Repair for Blown Gaskets & Leaks

Blue Devil Head Gasket Sealer (1 US Quart / 946mL) is the #1 solution in the country for blown head gaskets, cracked heads, and leaking heater cores. This high-performance sealer offers a permanent repair guarantee that is ASTM D3147 and D1881 compliant. It effectively seals leaks in freeze plugs and provides a durable, long-lasting fix for a wide range of engine issues. Trust Blue Devil to restore your engine's performance and eliminate costly repairs with this proven head gasket sealer.