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K-Seal · Cooling System
K SEAL
In stock · ships from Knoxville
K-Seal is a pour-and-go permanent coolant leak repair fluid. It seals leaks in the radiator, head gasket, engine block, heater core, water pump, and freeze plugs without draining, flushing, or removing the thermostat.
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8 fl oz bottle treats cooling systems up to 20 quarts (20 liters). Heavier trucks and large commercial vehicles may require the 16 oz Heavy Duty size. Not for use in systems with existing stop-leak products; check compatibility.
Part data verified against 5 catalog sources
Numbers this part supersedes or interchanges with. Showing 4 of 4.
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The ceramic and copper formula is safe for all water-cooled engines and works with any antifreeze. Just shake the bottle, pour it into the cooling system, and run the engine; the sealant finds and seals holes and cracks, typically within 7–10 minutes. It's a cost-effective alternative to expensive mechanical repairs, backed by a lifetime guarantee for the engine.
Part Number: K SEAL
RADIATOR STOP LEAK
Dealer: Knox Trailers
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