K-SEAL Coolant Leak Repair, 472ml Multi-Purpose Formula ST9501

Coolant leaks don't have to result in costly repair bills, simply add K-Seal to your coolant system for a quick and permanent fix. K-Seal is scientifically tested, trusted by millions of customers worldwide, and the only coolant leak repair fluid carried by the AA, the UK's largest roadside repair company. K-Seal couldn't be simpler to use. Just shake the bottle, add the fluid to your coolant system, and run your engine as normal. K-Seal's unique formula will seek out holes and cracks, and permanently seal them, with no adverse impact on the efficiency of your engine cooling.
REPAIRS IN MINUTES: One step multi purpose leak repair system permanently seals blown head gaskets, water pumps, radiators, engine blocks in all types of vehicles with water cooled engines: trucks, cars, marine engines, buses and more.
FREEZE PROOF: Specifically formulated for harsh weather, K-Seal is freeze proof to -38° Celsius. DIY alternative to costly repairs, one bottle is effective for up to 12 cylinders and quickly and permanently stops leaks and seals cracks up to 1/32”.
SHAKE, POUR AND GO: Our cooling system sealer is easy to use: shake the bottle, add to your radiator/overflow and run the engine! Unlike some traditional products, it mixes with all types of antifreeze, absolutely no draining or flushing required.
ASTM D3147 CLASSIFICATION AND SCIENTIFICALLY TESTED: Our product has been independently tested by Brighton University Engineering Division using US standard test equipment. It is also the product of choice for many roadside rescue organizations.
CUSTOMER SUPPORT: If our head gasket repair leak doesn’t seal your intake gasket, the system might be over-pressurized. Check the Technical Specification section of this page for extra instructions for a successful repair. Over 8 million sold!