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Up to 66% Off Tire Clearance

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Up to 66% Off Tire Clearance
Clearance pricing on select in-stock tires only. Prices will show as marked down with a strike through price. Discount eligible tires will be identified on product detail and search result pages. All other tires, fleet and special order tires are excluded from this offer.

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  • Part #: 1196|
  • SKU: 555355

Available today

Pay in Store Available

    • Works with all types and colors of antifreeze coolant and/or water
    • Stops leaks and seals in all minor cooling system leaks
PayPal available for online purchases. Major credit cards accepted online and in store. Pay online, in-store or take advantage of our Pep Boys credit card. Learn more and see additional details in cart.

Bar's Leaks Liquid Radiator Stop Leak

Stop radiator leaks with Bar's Leaks Radiator Stop Leak Concentrate. It's specially designed to stop minor cooling system leaks and drips caused by normal cooling system wear and age.
  • Works with all types and colors of antifreeze coolant and/or water
  • Stops leaks and seals in all minor cooling system leaks
  • Seals leaks in radiators, gaskets, heater cores and freeze plugs
  • Compatible with conventional green (silicate-based) and extended life red/orange or yellow (OAT) antifreeze
  • For preventative maintenance, use once a year to guard against future leaks
  • To keep your car running smoothly, check out our wide selection of trusted Bar's Leaks repair solutions and Rislone performance enhancement products
  • The Pep Boys Say: "Bar's Leaks Radiator Stop Leak Concentrate is ideal for those common small leaks in your cooling system - and to prevent the ones that haven't happened yet."


Rated 2.7 out of 5 by 6 reviewers.
Rated 2 out of 5 by I have purchased this product two times and each time I used it it did not work Twice I have that problem and the product don't work August 27, 2016
Rated 1 out of 5 by Did not stop the leak. Used product as directed but it did not stop the leak, August 18, 2016
Rated 2 out of 5 by good price I'm pretty sure it's a good product, but I can't really say it is a good or bad product, because a few days after I put this product into my car's coolant reservoir (capless radiator), my radiator gave out, cracked. I had a new radiator installed. September 30, 2015
Rated 5 out of 5 by this product works great Just used one bottle and problem solved August 15, 2015
Rated 2 out of 5 by Bars Radiator Stop Leak It doesn't work, two bottles, and it still leaks July 9, 2015
Rated 4 out of 5 by A few miles more... This product did stop a minor leak in a 14 year old vehicle I was needing to get a few more miles from... The Replacement of a Radiator Cap would cost more than the vehicle is worth. However, if I can make some minor repairs by adding a 'Stop Leak' type product such as this, will be worth investing in... June 4, 2015
  • 2016-10-26 T08:43:01.735-05:00
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