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25% Off Online Orders of Select Parts and Accessories. Enter Promo Code 25PEP in Cart

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25% Off All Online Orders of Select Parts and Accessories
Receive 25% Off Your Online Purchase. Use promotional code 25PEP at checkout to receive discount. Not valid in combination with any other discounts or promotions. Not valid on gift cards, special orders, installed merchandise, commercial or fleet purchases. Excludes the following categories: Tires, Wheels, Batteries, Powerstop Brake Kits, Oil, Antifreeze, Refrigerant, Truck Boxes, Vent Visors, Bug Shields and BRANDS: Razor, Traxxas, Superchips, Hypertech, Edge, Bully Dog, Diablo, Edelbrock, Holley, NOS, Proform, Specialty Auto, Thule, Autometer, Accel, K&N, Kenwood, Pioneer, Sony, JVC, MSD and BBK Performance. Valid online until 2:59 am EST on 12/12/16. Online orders scheduled for in-store pick up must be completed by closing on 12/11/16 for discount to apply.

Free Shipping on Orders Over $50 or in-store pickup

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  • Part #: AS120Y|
  • SKU: 1137983

Available tomorrow

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


Rated 4.3 out of 5 by 4 reviewers.
Rated 5 out of 5 by works great fits it purpose October 16, 2015
Rated 4 out of 5 by Easy to use. My 98 cad deville was leaking from the crossover pipe(probably the gasket) and this radiator stop leaked worked. September 8, 2015
Rated 5 out of 5 by works great One bottle all it took to stop a leak in my radiator. 2nd time I'm using this on different car June 16, 2015
Rated 3 out of 5 by proline 50/50 antifreeze Product appears to work as advertised. January 26, 2015
  • 2016-12-08 T08:52:16.284-06:00
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