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.
Life Saving Products. I was 200 miles from home when my radiator started leaking. I purchased a bottle of K-Seal and within minutes was on my way. That was 4 weeks ago and I have not had to top up since. THANK YOU.View more case studies
Yes. K-Seal does not react with coolant or other additives that may already be present in the system.
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.
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.