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Bar's Leaks Liquid Aluminum Radiator and Heater Core Stop Leak (6 Pack) is a scientifically engineered liquid solution that permanently seals coolant leaks causing engine overheating. Featuring Xtreme Cool™ technology, it reduces water temperature and conditions your cooling system without requiring draining. Compatible with all coolant types and safe for multiple radiator materials, this easy-to-use product ensures instant leak repair and reliable engine protection.




| ASIN | B00BYS6YLQ |
| Best Sellers Rank | #17,294 in Automotive ( See Top 100 in Automotive ) #419 in Oil & Fluid Additives |
| Brand | Bar's Leaks |
| Brand Name | Bar's Leaks |
| Color | Clear |
| Compatible Material | Anti-freeze |
| Customer Reviews | 4.3 out of 5 stars 3,621 Reviews |
| Global Trade Identification Number | 10046087011864 |
| Included Components | (6) Radiator and Heater Core Stop Leak |
| Item Dimensions | 6.6 x 6.6 x 18.8 centimeters |
| Item Form | Liquid |
| Item Type Name | Liquid Aluminum Radiator and Heater Core Stop Leak. 6 Pack |
| Item Weight | 1.2 Pounds |
| Item dimensions L x W x H | 6.6 x 6.6 x 18.8 centimeters |
| Item weight | 1.2 Pounds |
| Manufacturer | Bar's Leaks |
| Material | Liquid Aluminum and Xtreme Cool |
| Material Type | Liquid Aluminum and Xtreme Cool |
| Model | 1186-6PK |
| Number of Items | 6 |
| Number of Packs | 6 |
| Part Number | 1186-6PK |
| Style | Liquid |
| Style Name | Liquid |
| Unit Count | 101.4 Milliliters |
| Warranty Description | No |
| Water Resistance Level | Not Water Resistant |
| Water resistance level | Not Water Resistant |
Z**R
Must Try.
Looks like it worked. No more leaks.
A**R
Stopped leak
Stopped leak in the engine block. Good product. Bought 2nd time and used in lexus as a preventive measure for any future leaks or problems.
H**I
Genie in a bottle.
IT WORKS!! stops small leaks in any type of radiator with minimum effort, just follow the directions but don't forget to drain some coolant before adding the product (about 1 litre) then top up later.
B**D
ممتاز
يعمل على اغلاق الشقوق في دورة التبريد لكنه لا يغني عن الاصلاح اذا كنت تريد تأجيل الاصلاح استعمله لكن بالنهاية عليك اصلاح مكان التسريب
R**.
Effective
Good product
S**H
Perfect
Fixed my car leak
M**A
Doesn’t work on leaking hose. No bond oR seal
Doesn’t work
H**I
Ij
100 %100 Ok
A**S
Worked for My Coolant Leak
It worked for me, although I can’t speak for everyone’s situation. A lot depends on the type of leak you have—whether it’s coming from a hose, the radiator, or another part of the cooling system. In my case, I used it and it stopped the leak. I would say it may work well if the leak is small or minor. If you have a major leak, your results may be different. For the price, it was worth trying and it helped solve my problem. ⭐⭐⭐⭐⭐
H**M
ممتاز
جيد
E**R
SI ME FUNCIONO!
SI ME FUNCIONO !! LO RECOMIENDO.
S**.
Very satisfied.
After 1 application, the leak in my rad was repaired. It did not affect any other components of the cooling system. Highly recommend.
S**I
Barr’s is the way to go.
I’d say it worked great, I did something very stupid, I had my van idling on my driveway for about twenty minutes or so and my neighbour saw smoke coming from it and alerted me, most of the fluid leaked out of the radiator and in the process it sprung a couple of leaks, went and checked on line with my very good friend the one and only Scotty Kilmer and Barr,s radiator stop leak is what he swore by, no regrets using it, most of the leaks are gone just a minor drip from what I believe is coming from the drain plug, glad I used Barr’s Stop Leak
Trustpilot
1 month ago
2 months ago