

🚗 Seal the deal, skip the shop—coolant leaks fixed fast!
K-Seal Coolant Leak is a 236ml professional-grade sealant that permanently repairs leaks in radiators, head gaskets, freeze plugs, and more. Compatible with all antifreeze coolants and engines up to 12 cylinders, it works in minutes without draining or flushing. Trusted by mechanics and independently ASTM D3147 tested, it offers a cost-effective, durable solution to keep your engine running cool and leak-free.









| ASIN | B001QT9KO6 |
| Best Sellers Rank | 826 in Automotive ( See Top 100 in Automotive ) 4 in Fillers, Adhesives & Sealants |
| Brand | K-Seal |
| Colour | clear |
| Compatible Material | Alloy Steel, Aluminium, Brass, Copper, Engineered Wood, Fibreglass, Polyvinyl Chloride, Stainless Steel, Plastic |
| Customer Reviews | 4.4 out of 5 stars 12,948 Reviews |
| Global Trade Identification Number | 05060002968017 |
| Item Dimensions | 8.9 x 3.8 x 11.4 centimetres |
| Item Form | Liquid |
| Item Weight | 0.26 Kilograms |
| Item dimensions L x W x H | 8.9 x 3.8 x 11.4 centimetres |
| Item height | 4.5 inches |
| Item weight | 0.26 Kilograms |
| Manufacturer | K-Seal |
| Material | Synthetic Resin |
| Style | Compact |
| Style Name | Compact |
| Supported Standards | ASTM D3147 |
| Surface Recommendation | Vent, Countertop, Sink, Wall |
| UPC | 367157659506 812646010004 |
| Unit Count | 236.0 millilitre(s) |
| Water Resistance Level | Water Resistant |
| Water resistance level | Water Resistant |
B**S
It genuinely works!
It’s amazing stuff. Sorted a mysterious coolant leak in minutes. First time since I got the car that I haven’t had to top up after a long journey. Seems to be a permanent fix too.
T**E
Great value
Worked so goo, great value for the money
M**Y
Car coolant leak
Good product helppul
N**L
Good product
Does exactly what its meant to do, very easy to use, just pour into coolant tank.
J**N
Actual long term solution for minor coolant leaks in hard to reach places
Put this in a Citroen DS3 1.6 vti a year ago as it had a small leak on the oil cooler. After a year the coolant has only started to drop again - ordered some more, better than removing the manifold etc!
S**B
Not happy
Didn't worked as expected
J**N
Good product as expected
Good product as expected
D**K
highly recommend
car was leaking coolant slowly, put in and no more warning about coolant low level, been 12 months already, highly recommend
Trustpilot
3 days ago
1 month ago