BEST RADIATOR STOP LEAK

If you are looking for best RADIATOR STOP LEAK which can perform well and last longer then you should check out our review and buying guide in this article.

10 BEST RADIATOR STOP LEAK

IMAGE PRODUCT RATING PRICE
1. Bar's Leaks 1186 Liquid Aluminum Stop Leak - 16.9 oz
2. K-SEAL Coolant Leak Repair, ST5501 8oz, Multi-Purpose Formula Stops Leaks in...
3. Bar's Leaks PLT11 Pelletized HD Radiator Stop Leak - 11 oz.
4. Bar's Leaks HDC Radiator Stop Leak Tablet - 60 Grams
5. Bar's Leaks 1196 Radiator Stop Leak - 11 oz.
6. Bar's Leaks 1109 Block Seal Liquid Copper Intake and Radiator Stop Leak - 18 oz.
7. J-B Weld DS-114 PERM-O-Seal Radiator Stop Leak - 0.7 oz.
8. K-SEAL Coolant Leak Repair ST5516 Heavy Duty 16oz, Multi-Purpose Formula for...
9. Liqui Moly 20132 Radiator Stop Leak, 0.25 l, 1 Pack
10. Prestone AS145 Radiator Sealer Stop Leak - 11 oz.

Best RADIATOR STOP LEAK

Bar's Leaks 1186 Liquid Aluminum Stop Leak - 16.9 oz

 in stock
18 new from $6.29
Free shipping
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as of October 26, 2020 8:12 pm

Features

  • Bar's Leaks Liquid Aluminum Stop Leak seals radiator leaks. Seals freeze plug leaks. Repairs gasket leaks and heater core leaks. Lowers water temperature.
  • Seals radiator leaks
  • Seals freeze plug leaks
  • Repairs gasket leaks
  • Special Shipping Information: This item cannot be returned and has additional shipping restrictions

K-SEAL Coolant Leak Repair, ST5501 8oz, Multi-Purpose Formula Stops Leaks in the Radiator, Head Gasket, Block, Water Pump Casing, Heater Core, and Freeze Plug - Pour and Go - Trade Trusted-Stop Leak

 in stock
14 new from $12.46
1 used from $11.85
Free shipping
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as of October 26, 2020 8:12 pm

Features

  • REPAIRS IN MINUTES: Formulated to permanently weld radiators, including hard plastic aluminum heads and blocks in old and new cars. The only car radiator and gasket sealant university tested to meet ASTM D3147. Save time/money. US Bestseller
  • SEALS CRACKS AND STOPS LEAKS: A DIY alternative to costly repairs, our coolant leak fix permanently seals cracks and holes! It quickly repairs your leaking radiator, freeze plug, heater core and water pump casing with no adverse impact on efficiency.
  • POUR AND GO: Our cooling system sealer is easy to use: just shake the bottle, add to your radiator/overflow and run the engine! Unlike some traditional products, it mixes with all types of antifreeze, absolutely no draining or flushing required.
  • SCIENTIFICALLY TESTED: Safe and effective, our cracked block repair can seal leaks up to 1/32 of an inch! Once cured, the repair withstands the high pressure of the combustion chamber, all without failing or clogging the cooling system.
  • CUSTOMER SUPPORT: If K-Seal engine coolant leak stop doesn’t seal, the system might be over-pressurized. Check the Technical Specification section of this page for extra instructions for a successful repair. Over 8 million bottles sold worldwide!

Bar's Leaks PLT11 Pelletized HD Radiator Stop Leak - 11 oz.

 in stock
7 new from $3.27
1 used from $3.01
Free shipping
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Amazon.com
as of October 26, 2020 8:12 pm

Features

  • Seals leaks
  • Conditions cooling system
  • Inhibits rust and corrosion
  • Lubricates water pump seals
  • Helps control electrolysis

Bar's Leaks HDC Radiator Stop Leak Tablet - 60 Grams

 in stock
6 new from $2.25
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Amazon.com
as of October 26, 2020 8:12 pm

Features

  • Seals leaks
  • Conditions cooling system
  • Inhibits rust and corrosion
  • Lubricates water pump seals
  • Helps control electrolysis

Bar's Leaks 1196 Radiator Stop Leak - 11 oz.

 in stock
12 new from $3.22
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Amazon.com
as of October 26, 2020 8:12 pm

Features

  • Auto & Truck Maintenance
  • Country of manufacture: United States
  • Manufacturer: BAR'S LEAKS
  • Works with all types and colors of anti-freeze coolant
  • Stops and seals coolant leaks

Bar's Leaks 1109 Block Seal Liquid Copper Intake and Radiator Stop Leak - 18 oz.

 in stock
10 new from $7.97
2 used from $4.87
Free shipping
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Amazon.com
as of October 26, 2020 8:12 pm

Features

  • Seals larger leaks seals
  • Repairs heater core leaks
  • Repairs freeze plug leaks
  • Repairs blown head gaskets
  • Repairs blocks

J-B Weld DS-114 PERM-O-Seal Radiator Stop Leak - 0.7 oz.

 in stock
6 new from $5.92
Free shipping
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Amazon.com
as of October 26, 2020 8:12 pm

Features

  • JB WELD PERM O SEAL : Is a specially formulated non-toxic compound ground to a very fine particle size to quickly mix and flow into all areas of the cooling system to find and seal leaks.
  • WHAT THE PROS USE: Mechanics, repair pros, and any avid DIYer knows our products bond strong to a variety of surfaces in even the toughest environments; and they have always been made in the USA.
  • MONEY SAVING REPAIR SOLUTION: The powered concentrate allows for an economical repair as compared to liquid based alternatives that use similar technology.
  • DURABLE FAST FIX: The special compound will quickly seal leaks and will also act as a rust inhibitor and lubricant to internal cooling system parts. It will not clog or harm your cooling system.
  • DO IT YOURSELF: Big or small, you can DIY it with J-B. Our heavy duty adhesives repair & restore it right the first time. JB Weld delivers the legendary performance of the World's Strongest Bond.

K-SEAL Coolant Leak Repair ST5516 Heavy Duty 16oz, Multi-Purpose Formula for Truck/Tractor Coolant Leaks in the Radiator, Head Gasket, Water Pump Casing & Heater Core, A True Pour & Go -Trade Trusted

 in stock
8 new from $18.55
Free shipping
View On Amazon
Amazon.com
as of October 26, 2020 8:12 pm

Features

  • REPAIRS IN MINUTES: Create a permanent weld within the entire coolant system, including on hard plastic radiators and aluminum heads and blocks in larger capacity engines, AG, RV etc. The only industrial coolant sealant university tested to meet ASTM D3147.
  • SEALS CRACKS AND STOPS LEAKS: Avoid expensive downtime, our coolant stop leak will permanently seal cracks and holes! Quickly repair your head gasket, block, leaking radiator, freeze plug, heater core & water pump casing with no adverse impact on efficiency.
  • POUR AND GO: Our cooling system sealer is easy to use just shake the bottle, add to your radiator/overflow and run the engine! Unlike some competitive products, it mixes with all types of antifreeze, no draining, flushing or pulling the thermostat required.
  • SCIENTIFICALLY TESTED: Safe and effective, our Heavy Duty Coolant stop leak repair seals leaks up to 1/32 of an inch! Once cured, it withstands the high pressure of the combustion chamber, without failing or clogging the cooling system. US Bestseller
  • CUSTOMER SUPPORT: If our engine coolant leak doesn’t seal your head gasket, the system might be over-pressurized. Check the Technical Specification section of this page for extra instructions for a successful repair. Over 8 million bottles sold. Save time/money

Liqui Moly 20132 Radiator Stop Leak, 0.25 l, 1 Pack

 in stock
13 new from $8.95
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Amazon.com
as of October 26, 2020 8:12 pm

Features

  • LIQUI MOLY Radiator Stop-Leak completely seals such leaks immediately with ease. 
  • Secures the combustion chamber from damages caused by coolant admission
  • For all cooling water and heating systems with and without water filters

Prestone AS145 Radiator Sealer Stop Leak - 11 oz.

 in stock
4 new from $7.98
Free shipping
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Amazon.com
as of October 26, 2020 8:12 pm

Features

  • Patented formula quickly stops leaks in radiators, water pumps, and heater cores
  • Boosts corrosion inhibitors to protect against pitting and corrosion, which cause radiator leaks
  • Combination of natural and synthetic components provides the ability to seal leaks up to 0.020" x 0.5"
  • Seals even large leaks without interfering with the flow through the radiator or heater core
  • Stops the leak as well as the corrosive condition that causes it