Moroso Cooling System Leak Sealant 35500(2-PACK); 2-pack 1 Pint Ceramic
Cooling System Leak Sealant Series:Ceramic Engine Seal. Type Of Sealant:Ceramic. Ceramic Engine Seal; 1 Pint; Do Not Use w/Antifreeze;. The best Chemical Sealer you can buy to stop cooling system leaks.