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🔥 Keep your engine cool and leak-free—because overheating is so last season!
Bar's Leaks 1186 Liquid Aluminum Stop Leak is a scientifically formulated, easy-to-use additive that permanently seals leaks in radiators, heater cores, gaskets, and freeze plugs. Featuring Xtreme Cool™ technology, it reduces engine temperature and prevents overheating without requiring system draining. Compatible with all coolant types and radiator materials, it’s a trusted, top-ranked solution for maintaining optimal vehicle cooling performance.
| ASIN | B002696FA2 |
| Best Sellers Rank | #1,273 in Automotive ( See Top 100 in Automotive ) #10 in Automotive Fillers, Adhesives & Sealants |
| Brand | Bar's Leaks |
| Brand Name | Bar's Leaks |
| Color | Gray |
| Compatible Material | Aluminum |
| Customer Reviews | 4.3 out of 5 stars 3,628 Reviews |
| Global Trade Identification Number | 00046087011867 |
| Included Components | 1 Bottle Rislone 4405 Engine Oil Supplement, 11oz |
| Item Dimensions | 46 x 76 x 168 millimeters |
| Item Form | Liquid |
| Item Highlight | Safely and Easily Seal Leaks in Plastic, Aluminum and Metal Radiators, Heater Cores, Gaskets, Freeze Plugs |
| Item Type Name | Liquid Aluminum Radiator and Heater Core Stop Leak |
| Item Weight | 544 g |
| Item dimensions L x W x H | 46 x 76 x 168 millimeters |
| Item form | Liquid |
| Item weight | 544 g |
| Manufacturer | Bar's Leaks |
| Material | Plastic |
| Material Type | Plastic |
| Model | 1186 |
| Number of Items | 1 |
| Number of Packs | 1 |
| Part Number | 1186 |
| Style | 1 Pack |
| Style Name | 1 Pack |
| Surface Recommendation | Miscellaneous |
| UPC | 046087011867 |
| Unit Count | 1 Count |
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
3 weeks ago