ACDelco GM Original Equipment 10-108 (12378255) Cooling System Sealing Tabs - 4 g
ACDelco Cooling System Seal Tabs are designed with a non-toxic organic formula for use in radiator systems to seal and prevent leaks due to casting porosity in engine components. The tabs dissolve to lubricate internal components and seal coolant leaks. ACDelco Cooling System Seal Tabs also inhibit the formation of rust and scale, neutralize pH imbalances, and control electrolysis.