( 2 Pack ) Bar's Leaks Block Seal Head Gasket Fix Automotive Additive 24 oz

Leak Sealing : Safely seals head gaskets, cylinder heads, intake gaskets, cracked blocks, and freeze plugs, effectively stopping coolant leaks. Engine Suitability : Suitable for use on all water-cooled gasoline and diesel engines, with a heavy-duty formula effective on aluminum and cast iron heads and blocks.