Permanent Sealant for Radiator, Head Gasket, and Freeze Plug. Coolant Leak Repair 8oz. Our powerful formula is compatible with all antifreeze, making it a universal fit for your engine needs. This heavy-duty stop leak sealant expertly resolves issues in various components including the radiator, head gasket, freeze plugs, cylinder heads, heater core, water pump casing, and engine blocks.
