K-Seal Heavy Duty Permanent Coolant Leak Sealer

K-Seal® Heavy Duty Permanent Coolant Leak Sealer is specifically designed for large trucks and AG equipment that also works on aluminum and hard plastic. Makes repairs on cracks and holes in the entire coolant system including the head gasket, block, radiator, heater core, freeze plugs and water pump casing. No need to drain or flush existing coolant, simply shake and pour contents into the system via radiator, over flow tank or top hose.