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25% Off Online Orders of Select Hard Parts. Enter Promo Code MMJ30 in Cart.

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25% Off Select Parts and Accessories
Receive 25% Off Your Online or In-Store Purchase. Use promotional code MMJ25 at checkout to receive discount. Not valid in combination with any other discounts, promotions or items already on sale. Not valid on gift cards, special orders, installed merchandise, commercial or fleet purchases. Those products that are included will be displayed in product search results and product detail pages. INCLUDES the following categories: Starters, Alternators, Fuel Pumps, Radiators, Shocks & Struts, Chassis, CV Axles, Batteries, Ignition, Window Motors, Wipers, Appearance Chemicals, Car Wash Accessories, Floor Mats, Lift Equipment, Hand Tools, Headlamps and Bulbs. Excludes the following brands: Powerstop, Razor, Traxxas, Superchips, Hypertech, Edge, Bully Dog, Diablo, Edelbrock, Holley, NOS, Proform, Specialty Auto, Autometer, Accel, K&N, Kenwood, Pioneer, Sony, Thule, Thule Karrite, JVC, Flowmaster, Hurst, B&M, MSD, Moog, Wagner and BBK Performance. Valid online until 2:59 am EST on 5/1/17.

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  • Part #: AS120Y|
  • SKU: 1137983

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Pay in Store Available

    • Special formula helps seal larger size leaks
    • Heavy duty formula
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.

Prestone Super Sealer Radiator Stop leak

Prestone Super sealer's special formula helps seal larger size leaks
  • Special formula helps seal larger size leaks
  • Heavy duty formula


Prestone Super Sealer Radiator Stop leak is rated 3.6 out of 5 by 5.
Rated 1 out of 5 by from Does not work don't use this stuff it will clog your heater core
Date published: 2016-12-10
Rated 5 out of 5 by from works great fits it purpose
Date published: 2015-10-16
Rated 4 out of 5 by from Easy to use. My 98 cad deville was leaking from the crossover pipe(probably the gasket) and this radiator stop leaked worked.
Date published: 2015-09-08
Rated 5 out of 5 by from works great One bottle all it took to stop a leak in my radiator. 2nd time I'm using this on different car
Date published: 2015-06-16
Rated 3 out of 5 by from proline 50/50 antifreeze Product appears to work as advertised.
Date published: 2015-01-26
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