10 BEST COOLANT STOP LEAKS for sale in 2020 – compare between the best coolant stop leaks on sale.

RankProductRating
1
K-Seal ST5501 Multi Purpose One Step Permanent Coolant Leak Repair
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1,080 Reviews
Product Highlights
  • 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

$14.99 $12.47
2
K-Seal ST5516 HD Multi Purpose One Step Permanent Coolant Leak Repair
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104 Reviews
Product Highlights
  • 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

$15.51
3
Bar's Leaks J-100 Professional DiFM Cooling System Treatment, 5-Gram Tablets
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20 Reviews
Product Highlights
  • Seals internal, external and coolant to oil leaks
  • Stops radiator tank seal leaks
  • Inhibits the formation of rust and scale
  • Helps control electrolysis and helps neutralize pH imbalance

$21.59
4
Bar's Leaks Liquid Aluminum Stop Leak - 16.9 oz
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167 Reviews
Product Highlights
  • 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

$14.62 $6.47
5
Bar's Leaks PLT11 Pelletized HD Radiator Stop Leak - 11 oz.
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35 Reviews
Product Highlights
  • Seals leaks
  • Conditions cooling system
  • Inhibits rust and corrosion
  • Lubricates water pump seals

$5.29 $3.27
6
AlumAseal ASBPI12 Radiator Stop Leak Powder Blister Card - 20 g
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Product Highlights
  • Stops leaks safely, quickly and easily
  • Safe and effective for all metal, plastic and rubber cooling system parts
  • Will not clog cooling systems
  • Compatible with all antifreeze and coolants

$2.39 $1.42
7
Bar's Leaks 1196 Radiator Stop Leak - 11 oz.
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12 Reviews
Product Highlights
  • Auto & Truck Maintenance
  • Works with all types and colors of anti-freeze coolant
  • Stops and seals coolant leaks
  • One bottle treats up to 4 gallons

$7.13
8
Liqui Moly 20132 Radiator Stop Leak, 8.45 Fluid_Ounces
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7 Reviews
Product Highlights
  • 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

$11.37
9
Bar's Leaks HDC Radiator Stop Leak Tablet - 60 Grams
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130 Reviews
Product Highlights
  • Seals leaks
  • Conditions cooling system
  • Inhibits rust and corrosion
  • Lubricates water pump seals

$34.70 $3.91
10
Genuine GM (12378255) Fluid 3634621 Cooling System Seal Tablet - 4 Grams, (Pack of 5)
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237 Reviews
Product Highlights
  • Non-toxic
  • DEX-COOL compatible
  • Engine application is based on liters of volume in cooling system
  • Formulated for automotive use

$6.41 $5.89

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John Carter

John Carter is the owner and CEO of AcedProducts.co—a popular online website that analyzes tens of thousands of reviews on various products to show you the bestsellers in any category. His goal is to make online shopping much easier than it's ever been by eliminating the need to guess which products are good and which ones are bad.