Free Shipping on All Orders Over $50! Learn More

Help Center

About Us

Our Store

Log In
Account
Bar's Leaks Block Seal Liquid Copper Intake and Radiator Stop Leak 18oz

Bar’s Leaks Block Seal Liquid Copper Intake and Radiator Stop Leak 18oz

$12.99

Estimated delivery time:
3-5 days.

Free shipping:
On all orders over $50.

Guaranteed Safe Checkout:
svgexport-247.svg (1)
svgexport-248.svg (1)
svgexport-249.svg (1)
svgexport-251.svg (1)
svgexport-254.svg (1)

Bar’s Leaks Block Seal Liquid Copper Coolant Leak Fix seals larger leaks regular stop leaks won’t. One step formula permanently repairs coolant loss problems on cars, trucks, vans, SUV’s and RV’s.

Key Features:

  • Permanently Fixes Cooling System Leaks
  • Antifreeze Compatible—No Draining Required
  • One Step—Pour Directly Into Radiator—Easy To Use
  • Use with ALL types of traditional or extended life coolant

Orders ship within 1–3 business days. We offer free standard U.S. shipping on orders over $50.

Returns accepted within 14 days of delivery for unused items in original packaging. Email us to request a return or refund.

People Also Bought

Here’s some of our most similar products people are buying.

K-Seal Head Gasket Fix 16oz

$31.49

Bar’s Leaks High Mileage Cooling System Repair 16.9oz

$12.99

Bar’s Leaks One Seal Stop Leak 11oz

$6.99

Bar’s Leaks Radiator Stop Leak

$7.99

All things automotive.

Store Location
Mon–Fri: 9 AM – 9 PM EST
Sat: 9 AM – 5 PM EST

(313) 572-4941
sales@autoweco.com

Customer Service
Business & Partnerships
Community
Sign Up to Newsletter

Be the first to get promo offers and reward perks straight to your inbox.

You can easily unsubscribe from our emails at any time by using the link provided in every message we send you.

© 2026 AutoWeco. All rights reserved.

 

Disclaimer: All products on this website are intended for automotive use. Results may vary by vehicle, installation, and application. AutoWeco provides quality automotive products and accessories but does not replace professional mechanical advice. Use products at your own risk and consult a qualified professional when needed.

 

IMPORTANT: AutoWeco is not affiliated with, nor responsible for, any third-party websites or resellers not explicitly operating under the AutoWeco.com domain.

Store Location
Mon–Fri: 9 AM – 9 PM EST
Sat: 9 AM – 5 PM EST

(313) 572-4941
sales@autoweco.com

Be the first to get promo offers and reward perks straight to your inbox.

You can easily unsubscribe from our emails at any time by using the link provided in every message we send you.

© 2022–2026 AutoWeco. All rights reserved.

 

IMPORTANT: AutoWeco is not affiliated with, nor responsible for, any third-party websites or resellers not explicitly operating under the AutoWeco.com domain.