Best Radiator Stop Leak

Top 10 Best Radiator Stop Leak

1

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

1,761 ratings | 22 offers
Price: $6.29$24.88
  • Repairs gasket leaks
  • Special Shipping Information: This item cannot be returned and has additional shipping restrictions
  • Seals radiator leaks
  • Seals freeze plug leaks
  • Bar's Leaks Liquid Aluminum Stop Leak seals radiator leaks. Seals freeze plug leaks. Repairs gasket leaks and heater core leaks. Lowers water temperature.

Bar's Leaks 1186 Liquid Aluminum Stop Leak - 16.9 oz - Price History: B002696FA2
Price History
Bar's Leaks 1186 Liquid Aluminum Stop Leak - 16.9 oz: image
86%
customers recommend this product
4.3/ 5
2

BlueDevil Hydraulic Stop Leak/Gallon

177 ratings | 1 offers
Price starts from: $54.66
  • Restores Dried, Cracked, And Shrunken Rubber Seals
  • Permanent Seal
  • Works In All Hydraulic Systems
  • Product Type:Auto Accessory

BlueDevil Hydraulic Stop Leak/Gallon - Price History: B00D478B52
Price History
BlueDevil Hydraulic Stop Leak/Gallon: image
86%
customers recommend this product
4.3/ 5
3

AlumAseal ASBPI12 Radiator Stop Leak Powder Blister Card – 20 g

162 ratings | 3 offers
Price: $8.99$10.29
  • Safe and effective for all metal, plastic and rubber cooling system parts
  • Will not clog cooling systems
  • Stop leak tube treats cooling systems up to 22 quarts (21 liters)
  • Stops leaks safely, quickly and easily
  • Compatible with all antifreeze and coolants

AlumAseal ASBPI12 Radiator Stop Leak Powder Blister Card - 20 g - Price History: B000FW61M4
Price History
AlumAseal ASBPI12 Radiator Stop Leak Powder Blister Card - 20 g: image
88%
customers recommend this product
4.4/ 5
4

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

496 ratings | 9 offers
Price: $2.4$20.04
  • Conditions cooling system
  • Seals leaks
  • Helps control electrolysis
  • Lubricates water pump seals
  • Inhibits rust and corrosion

Bar's Leaks HDC Radiator Stop Leak Tablet - 60 Grams - Price History: B000KKND3Q
Price History
Bar's Leaks HDC Radiator Stop Leak Tablet - 60 Grams: image
86%
customers recommend this product
4.3/ 5
5
  • Compatible With Motor Oils Of All Types
  • Restores Elasticity And Stretch Ability Of Rubber Gaskets And Seals
  • Reduces Engine Noise and Oil Consumption
  • Stops Oil Leakages From The Engine And Prevents Their Emerging In The Future
  • Eliminates The Need For Expensive Repair

XADO ATOMEX Stop Leak Engine Oil Additive Sealer (Bottle, 250 ml) - Repair Gaskets & Seals Treatment - Price History: B00KFKOR0Y
Price History
XADO ATOMEX Stop Leak Engine Oil Additive Sealer (Bottle, 250 ml) - Repair Gaskets & Seals Treatment: image
82%
customers recommend this product
4.1/ 5
Mileage3.6
Value for money2.5
Top Pick
6

K-Seal ST5501 Multi Purpose One Step Permanent Coolant Leak Repair

3,729 ratings | 21 offers
Price: $12.15$27.84
  • 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
  • Permanent coolant leak repair – Just shake, pour and go
  • No draining or flushing
  • Mixes with all antifreeze

K-Seal ST5501 Multi Purpose One Step Permanent Coolant Leak Repair - Price History: B001QT9KO6
Price History
K-Seal ST5501 Multi Purpose One Step Permanent Coolant Leak Repair: image
84%
customers recommend this product
4.2/ 5
Easy to use4.7
Value for money4.3
Longevity4.1
Mileage4
7
  • Repairs blown head gaskets
  • Repairs heater core leaks
  • Repairs blocks
  • Seals larger leaks seals
  • Repairs freeze plug leaks

Bar's Leaks 1109 Block Seal Liquid Copper Intake and Radiator Stop Leak - 18 oz. - Price History: B002PX91OG
Price History
Bar's Leaks 1109 Block Seal Liquid Copper Intake and Radiator Stop Leak - 18 oz.: image
88%
customers recommend this product
4.4/ 5
Easy to use4.6
Value for money4.4
Mileage3.7
8

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

157 ratings | 20 offers
Price: $7.54$25.95
  • Secures the combustion chamber from damages caused by coolant admission
  • LIQUI MOLY Radiator Stop-Leak completely seals such leaks immediately with ease. 
  • For all cooling water and heating systems with and without water filters

Liqui Moly 20132 Radiator Stop Leak, 0.25 l, 1 Pack - Price History: B076ZP45Z5
Price History
Liqui Moly 20132 Radiator Stop Leak, 0.25 l, 1 Pack: image
88%
customers recommend this product
4.4/ 5
Easy to use4.9
Mileage4.4
Value for money4.4
9

Bar's Leaks Cooling System Repair , grey , – 16.9 oz -1150

151 ratings | 18 offers
Price: $10.85$32.27
  • Compatible with all brands of anti-freeze including conventional green or blue and extended life red/orange or yellow (OAT/HOAT) coolant
  • Stops Cooling System Leaks
  • Country Of Manufacture: United States
  • Premium Carbon Fiber Formulation For Extended Protection

Bar's Leaks Cooling System Repair , grey , - 16.9 oz -1150 - Price History: B00753MZWG
Price History
Bar's Leaks Cooling System Repair , grey , - 16.9 oz -1150: image
88%
customers recommend this product
4.4/ 5
Easy to use5
Value for money5
Mileage5
10

Bar's Leak HG-1 HEAD SEAL Blown Head Gasket Repair

2,375 ratings | 2 offers
Price starts from: $31.81
  • Stops heater core and radiator leaks
  • Fixes leaking freeze and core plugs
  • Seals cracked cylinder heads and blocks
  • Repairs blown head and intake gasket leaks

Bar's Leak HG-1 HEAD SEAL Blown Head Gasket Repair - Price History: B003RGIWO0
Price History
Bar's Leak HG-1 HEAD SEAL Blown Head Gasket Repair: image
82%
customers recommend this product
4.1/ 5
Easy to use4.4
Value for money3.7
Mileage3.5
Top Pick
K-Seal ST5501 Multi Purpose One Step Permanent Coolant Leak Repair
K-Seal 8 fluid ounce bottle is effective to 20 quarts cooling capacity. Just shake, pour and go. It repairs leaks and cracks in radiator, head gasket, heater core, freeze plugs, water pump casing, cylinder heads and engine blocks.
Ranking the Brands
Bar's Leaks: 50.00%
BlueDevil Products: 10.00%
Alumaseal: 10.00%
XADO: 10.00%
K-Seal: 10.00%
Liqui Moly: 10.00%

Comparison Table

Сomparison: Bar's Leaks 1186 Liquid Aluminum Stop Leak - 16.9 oz: imageСomparison: BlueDevil Hydraulic Stop Leak/Gallon: imageСomparison: AlumAseal ASBPI12 Radiator Stop Leak Powder Blister Card - 20 g: imageСomparison: Bar's Leaks HDC Radiator Stop Leak Tablet - 60 Grams: imageСomparison: XADO ATOMEX Stop Leak Engine Oil Additive Sealer (Bottle, 250 ml) - Repair Gaskets & Seals Treatment: imageСomparison: K-Seal ST5501 Multi Purpose One Step Permanent Coolant Leak Repair: imageСomparison: Bar's Leaks 1109 Block Seal Liquid Copper Intake and Radiator Stop Leak - 18 oz.: imageСomparison: Liqui Moly 20132 Radiator Stop Leak, 0.25 l, 1 Pack: imageСomparison: Bar's Leaks Cooling System Repair , grey , - 16.9 oz -1150: imageСomparison: Bar's Leak HG-1 HEAD SEAL Blown Head Gasket Repair: image
Bar's Leaks 1186 Liquid Aluminum Stop Leak – 16.9 ozBlueDevil Hydraulic Stop Leak/GallonAlumAseal ASBPI12 Radiator Stop Leak Powder Blister Card – 20 gBar's Leaks HDC Radiator Stop Leak Tablet – 60 GramsXADO ATOMEX Stop Leak Engine Oil Additive Sealer (Bottle, 250 ml) – Repair Gaskets & Seals TreatmentK-Seal ST5501 Multi Purpose One Step Permanent Coolant Leak RepairBar's Leaks 1109 Block Seal Liquid Copper Intake and Radiator Stop Leak – 18 oz.Liqui Moly 20132 Radiator Stop Leak, 0.25 l, 1 PackBar's Leaks Cooling System Repair , grey , – 16.9 oz -1150Bar's Leak HG-1 HEAD SEAL Blown Head Gasket Repair
ManufacturerBar's LeaksBlue DevilGold Eagle Co.Bar's LeaksK-SealBar's LeaksLiqui MolyBar's LeaksBar's Leaks
BrandBar's LeaksBlueDevil ProductsAlumasealBar's LeaksXADOK-SealBar's LeaksLiqui MolyBar's LeaksBar's Leaks
Item Weight1.2 pounds8.85 pounds0.705 ounces3.2 ounces10.4 ounces9.6 ounces1.3 pounds11.9 ounces1 pounds2.5 pounds
Product Dimensions2.6 x 2.6 x 7.4 inches5 x 1 x 3 inches7.5 x 5 x 0.8 inches7.87 x 2 x 6 inches7.5 x 2.6 x 2.6 inches1.8 x 3.6 x 8.4 inches9.78 x 3.22 x 3.22 inches
Is Discontinued By ManufacturerNoNoNoNoNoYesNoNo
SizePack of 1Blister Card (Single)Pack of 1Pack of 11 PackPack of 1

Products with 5 star rating

Tips and advices on YouTube

Does Stop Leak Work? – EricTheCarGuy
This Destroyed My Car’s Engine, Here’s Why
BEST! Bars Leak Fixes Blown Head Gasket

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