Get back on the road

Permanent coolant leak repair and head gasket fix with K-Seal.

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The K-Seal product range

K-Seal

K-Seal®

Permanently seals leaks in the head, head gasket, block, radiator, heater matrix and water pump.

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K-Seal Ultimate

K-Seal® ULTIMATE

A unique formula specially developed to permanently repair serious head gasket and porous block problems

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K-Seal HD

K-Seal® HD

Designed for large engines including HGV’s, tractors, heavy plant and other commercial vehicles.

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Save money with K-Seal

No need to drain the system or worry about what type of antifreeze is in the cooling system; just shake, pour and get back on the road!

K-Seal is a one-step permanent multi-purpose system for coolant leak repair with over 6 million bottles being sold worldwide to date. It permanently repairs leaks in the head, head gasket, block, radiator, heater matrix, freeze plug and water pump casing.

Trusted by professional mechanics and technicians, K-Seal is suitable for use with all water cooled engines including cars, motorbikes, commercial vehicles and heavy machinery.

Hi guys. Just used your product on my 1800 diesel after the radiator blew a leak. I tried 2 other inferior radiator sealants that did not work and I have to say well done. Within 5 mins all was well and the levels remain static. The K-Seal was recommended by a soldier who says nearly every vehicle in a warzone carries it as it’s the only thing that will plug a bullet hole. Nevertheless well done and well played.

Brian Reed, UK View more case studies

Expert Advice

Head Gasket Failure? Cracked Head or Block?
Leaking Radiator?

Expert Advice

Where to buy K-Seal

Have any of these symptoms? K-Seal could save you thousands on a workshop repair. Search for a stockist today!

Where to Buy