BEST RADIATOR STOP LEAKS

Choosing the best RADIATOR STOP LEAKS may be challenging as you have to screen through a large amount of similar products available on the market. Don’t worry though; we have got our hands on 10 trendy and top-rated products and below is our recommendation.

10 BEST RADIATOR STOP LEAKS

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

Best RADIATOR STOP LEAKS

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

 in stock
23 new from $6.29
Free shipping
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as of May 12, 2021 4:34 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

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

 in stock
13 new from $7.79
Free shipping
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as of May 12, 2021 4:34 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
8 new from $6.36
Free shipping
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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 ST5501 Multi Purpose One Step Permanent Coolant Leak Repair

 in stock
15 new from $11.25
Free shipping
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as of May 12, 2021 4:34 pm

Features

  • Permanent coolant leak repair - Just shake, pour and go
  • Mixes with all antifreeze
  • No draining or flushing
  • Fixes cracks and leaks in radiator, head gasket, freeze plugs, cylinder heads, heater core, water pump casing and engine blocks
  • If product did not seal head gasket leak, the system might be Over-pressurized, which causes back pressure and doesn't allow the product to reach the problem area, on this page below under Technical Specification is a PDF Guide with instructions to follow to complete the repair successfully

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

 in stock
8 new from $4.61
Free shipping
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as of May 12, 2021 4:34 pm

Features

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

Prestone AS145 Radiator Sealer Stop Leak - 11 oz.

 in stock
4 new from $5.15
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as of May 12, 2021 4:34 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

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

 in stock
11 new from $2.40
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as of May 12, 2021 4:34 pm

Features

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

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

 in stock
16 new from $7.19
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as of May 12, 2021 4:34 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

DS-114 PERM-O-SEAL Radiator Stop Leak - 0.7 oz, Pack of 2

 in stock
4 new from $9.99
Free shipping
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as of May 12, 2021 4:34 pm

Features

Part Number2356898754
Model13

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

 in stock
18 new from $2.89
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Amazon.com
as of May 12, 2021 4:34 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