Get back on the road

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

Where to Buy

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.

Thank you for the prompt delivery of the K-Seal. I am very happy to say it worked on my broken V6 Shogun (head gasket). I’m mildly amazed! Many thanks.

Alan Race, Kent View more case studies

Expert Advice

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

Expert Advice

Find a K-Seal stockist

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