K-Seal®

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

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Permanent Coolant Leak Repair with K-Seal

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.

Just pour & go

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.




Trustpilot

This K-Seal fixed a head gasket leak in my wife’s Audi A4 and my F150 Rad. Thank you.

Dave McGregor View more case studies

Where to buy K-Seal

Not in Canada?

FAQs

Is K-Seal compatible with all types of coolant?

Yes. K-Seal does not react with coolant or other additives that may already be present in the system.

Is there any special preparation I need to do before using K-Seal?

Unlike other block sealers, K-Seal is a simple ‘pour & go’ solution. Shake the bottle well and then add the entire contents to the cooling system where you would normally top up the coolant/water.

How much K-Seal do I need?

1 standard bottle of K-Seal (236ml/8floz) will treat cooling systems with a capacity up to 20 litres (this covers motorbikes up to light commercial vehicles). For larger cooling systems use our Heavy Duty (472ml/16floz) size K-Seal.

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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!

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