See Details

30% Off Online Orders of Select Parts and Accessories. Enter Promo Code PEP30 in Cart

Close (X)

30% Off Online Orders of Select Parts and Accessories
Receive 30% Off Your Online Purchase. Use promotional code PEP30 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 10/27/16. Online orders scheduled for in-store pick up must be completed by closing on 10/26/16 for discount to apply.

Zoom [+]
  • Part #: ASBP |
  • SKU: 1064603

Available tomorrow

Pay in Store Available

    • Stops Radiator and Heater Cores Leaks Safely, Quickly and Easily
    • Compatible with ALL antifreeze and coolants
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.

AlumAseal Radiator Stop Leak Powder

AlumAseal Radiator Stop Leak Powder is compatible with ALL antifreeze and coolants. AlumAseal Powder stops leaks and prevents cooling system damage.
  • Stops Radiator and Heater Cores Leaks Safely, Quickly and Easily
  • Compatible with ALL antifreeze and coolants
  • Safe for metal, plastic, and rubber cooling parts
  • GUARANTEED to work


Rated 3 out of 5 by 4 reviewers.
Rated 4 out of 5 by Slow Leak I have a very small leak and didn't want some big bill replacing something just yet. Only leaks while driving. October 8, 2016
Rated 2 out of 5 by works in a pinch (when needed) it works to seal/stops leaks without clogging up other components October 16, 2015
Rated 5 out of 5 by Sealed my radiator the first try Every time I parked I had coolant leaking from the radiator. Thought I would give this product a try before having to spend any more money on this vehicle. After putting the sealer in the cooling system and heating up the engine for about 15 minutes, the leak was gone. So glad it worked for me. March 21, 2015
Rated 1 out of 5 by Not worth the money Product caused more damage than it fixed. Spend the extra money and time tracking down the K-Seal. The cheap flake products like this one clog the thermostat causing overheating and more work to be needed. January 27, 2015
  • 2016-10-25 T09:29:14.788-05:00
  • bvseo_lps, prod_bvrr, vn_prr_5.6
  • cp-1, bvpage1
  • co_hasreviews, tv_4, tr_4
  • loc_en_US, sid_1064603, prod, sort_default
1-4 of 4