Best Jb Weld Radiator Repair Kit of 2026

Last updated on 05/01/2026
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1
J-B Weld 2120 Radiator Repair Kit
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J-B Weld 2120 Radiator Repair Kit

J-B Weld
Why we love it
  • Professional quality, permanent repairs.
  • Simple and easy instructions.
  • Versatile for multiple applications.
Main Highlights
  • RADIATORWELD: Our radiator and plastic tank repair kit has all you need for making professional quality, permanent repairs with state of the art components and easy to follow instructions.
  • COUNT ON US: For more than 40 years, our products have earned a loyal following from people who take pride in their work. With each product we innovate, we continue to provide the world's strongest bond for your projects.
  • SIMPLE TO USE: No removal of tank or radiator is required to stop leaks. Easily fix holes up to 3/8" diam. or cracks up to 4" long. Includes epoxy putty, fiberglass cloth, sandpaper, and applicator.
  • VERSATILE & DEPENDABLE: Great for radiators, washer fluid tanks, storage tanks, water tanks, plastics, composites, PVC and more. Professionals, mechanics and avid DIYers know J-B gets the job done.
  • NO PROJECT TOO BIG OR TOO SMALL: We have all the products you need to get the job done right. JB Weld always delivers the legendary performance of the World's Strongest Bond.
Show More
9.7
Exceptional
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9.7
Exceptional
J-B Weld

J-B Weld 2120 Radiator Repair Kit

Why we love it
  • Professional quality, permanent repairs.
  • Simple and easy instructions.
  • Versatile for multiple applications.
Main Highlights
  • RADIATORWELD: Our radiator and plastic tank repair kit has all you need for making professional quality, permanent repairs with state of the art components and easy to follow instructions.
  • COUNT ON US: For more than 40 years, our products have earned a loyal following from people who take pride in their work. With each product we innovate, we continue to provide the world's strongest bond for your projects.
  • SIMPLE TO USE: No removal of tank or radiator is required to stop leaks. Easily fix holes up to 3/8" diam. or cracks up to 4" long. Includes epoxy putty, fiberglass cloth, sandpaper, and applicator.
  • VERSATILE & DEPENDABLE: Great for radiators, washer fluid tanks, storage tanks, water tanks, plastics, composites, PVC and more. Professionals, mechanics and avid DIYers know J-B gets the job done.
  • NO PROJECT TOO BIG OR TOO SMALL: We have all the products you need to get the job done right. JB Weld always delivers the legendary performance of the World's Strongest Bond.
Show More
Value for Money
2
J-B Weld 8297 HighHeat Temperature Resistant Epoxy Putty Stick, Machine Gray, 2oz (Pack of 2)
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J-B Weld 8297 HighHeat Temperature Resistant Epoxy Putty Stick, Machine Gray, 2oz (Pack of 2)

J-B Weld
20% Off
Why we love it
  • Withstands high temperatures effectively.
  • Ideal for exhaust and machinery.
  • Easy to mix and apply.
Main Highlights
  • The information below applies to each unit in the pack
  • Able to withstand continuous heat up to 450 degrees Fahrenheit or intermittent heat up to 500 degrees; 3 times stronger at high temperatures than conventional epoxy putties
  • Great for exhaust manifolds, tail pipes, mufflers, engine blocks, duct work, machinery, and other high temperature projects in need of a bond or a seal
  • Easy to Use; simply cut the required amount of putty, mix it by thoroughly kneading until a uniform color is reached, then press it firmly to the surface to be repaired
  • Adhesive and sealant for extreme temperature applications; when you need to bond metal that gets very hot, whether it's a car muffler or an industrial repair, this is the sealer for you
  • J-B Weld is an American company that proudly manufactures its products in the USA; when you need a repair, you need the World's Strongest Bond.
Show More
9.6
Superb
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9.6
Superb
J-B Weld

J-B Weld 8297 HighHeat Temperature Resistant Epoxy Putty Stick, Machine Gray, 2oz (Pack of 2)

20% Off
Why we love it
  • Withstands high temperatures effectively.
  • Ideal for exhaust and machinery.
  • Easy to mix and apply.
Main Highlights
  • The information below applies to each unit in the pack
  • Able to withstand continuous heat up to 450 degrees Fahrenheit or intermittent heat up to 500 degrees; 3 times stronger at high temperatures than conventional epoxy putties
  • Great for exhaust manifolds, tail pipes, mufflers, engine blocks, duct work, machinery, and other high temperature projects in need of a bond or a seal
  • Easy to Use; simply cut the required amount of putty, mix it by thoroughly kneading until a uniform color is reached, then press it firmly to the surface to be repaired
  • Adhesive and sealant for extreme temperature applications; when you need to bond metal that gets very hot, whether it's a car muffler or an industrial repair, this is the sealer for you
  • J-B Weld is an American company that proudly manufactures its products in the USA; when you need a repair, you need the World's Strongest Bond.
Show More
3
J-B Weld 8271 Kwikweld Professional Quick Setting Steel Reinforced 2 Part Epoxy adhesive for Repair, Dark Grey, Two 5 oz tubes
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J-B Weld 8271 Kwikweld Professional Quick Setting Steel Reinforced 2 Part Epoxy adhesive for Repair, Dark Grey, Two 5 oz tubes

J-B Weld
Why we love it
  • Ideal for professionals.
  • Sets within minutes.
  • Exceptionally high strength.
Main Highlights
  • PROFESSIONAL SIZE - Ideal for high use professionals such as the automotive industry
  • FAST SETTING - Sets within minutes and cures within just a couple of hours
  • HIGH STRENGTH - Exceptionally high strength provides a permanent repair to almost anything
  • STEEL REINFORCED EPOXY - Known as the "original cold weld"
  • MULTIPLE MATERIALS - Some of the most common repairs are metal, wood, plastic, concrete, brick and cement
  • ENVIRONMENTAL RESISTANCE - Resistant to water, chemicals and heat
  • CURES CONSISTENTLY - No shrinkage/foaming with epoxy adhesives and can be sanded, drilled or tapped once set
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9.5
Superb
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9.5
Superb
J-B Weld

J-B Weld 8271 Kwikweld Professional Quick Setting Steel Reinforced 2 Part Epoxy adhesive for Repair, Dark Grey, Two 5 oz tubes

Why we love it
  • Ideal for professionals.
  • Sets within minutes.
  • Exceptionally high strength.
Main Highlights
  • PROFESSIONAL SIZE - Ideal for high use professionals such as the automotive industry
  • FAST SETTING - Sets within minutes and cures within just a couple of hours
  • HIGH STRENGTH - Exceptionally high strength provides a permanent repair to almost anything
  • STEEL REINFORCED EPOXY - Known as the "original cold weld"
  • MULTIPLE MATERIALS - Some of the most common repairs are metal, wood, plastic, concrete, brick and cement
  • ENVIRONMENTAL RESISTANCE - Resistant to water, chemicals and heat
  • CURES CONSISTENTLY - No shrinkage/foaming with epoxy adhesives and can be sanded, drilled or tapped once set
Show More
4
New J-B Weld FiberWeld Pipe Repair Cast 1" Kit 2.5Cm X 121Cm, Packaging May Vary
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New J-B Weld FiberWeld Pipe Repair Cast 1" Kit 2.5Cm X 121Cm, Packaging May Vary

J-B Weld
Why we love it
  • DIY and Professional Use.
  • Great for Various Repairs.
  • Sets and Cures Quickly.
Main Highlights
  • DIY & PROFESSIONAL USE - can be used by DIY users to achieve professional results. Professionals can use the kit to make seamless repairs.
  • REPAIRS - Great for repairs on copper, cast iron, PVC, abs, galvanised steel, rubber and more!
  • FAST - sets in just 5-10 minutes and cures within 20 minutes.
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9.4
Superb
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9.4
Superb
J-B Weld

New J-B Weld FiberWeld Pipe Repair Cast 1" Kit 2.5Cm X 121Cm, Packaging May Vary

Why we love it
  • DIY and Professional Use.
  • Great for Various Repairs.
  • Sets and Cures Quickly.
Main Highlights
  • DIY & PROFESSIONAL USE - can be used by DIY users to achieve professional results. Professionals can use the kit to make seamless repairs.
  • REPAIRS - Great for repairs on copper, cast iron, PVC, abs, galvanised steel, rubber and more!
  • FAST - sets in just 5-10 minutes and cures within 20 minutes.
Show More
5
J-B Weld 8281 Original Cold-Weld Epoxy, Dark Grey, 10 oz
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J-B Weld 8281 Original Cold-Weld Epoxy, Dark Grey, 10 oz

J-B Weld
25% Off
Why we love it
  • Sets in just 4 hours.
  • Withstands high temperatures easily.
  • Perfect for various surfaces.
Main Highlights
  • Sets in 4-6 hours to a dark grey colour
  • Full cure within 15-24 hours
  • Tensile strength of 5020 PSI
  • Able to withstand temperatures up to 550ºF when fully cured
  • Great for household repairs, automotive, plumbing, marine, crafts & more
  • To use on automotive, brick, concrete, metal and more
Show More
9.3
Superb
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9.3
Superb
J-B Weld

J-B Weld 8281 Original Cold-Weld Epoxy, Dark Grey, 10 oz

25% Off
Why we love it
  • Sets in just 4 hours.
  • Withstands high temperatures easily.
  • Perfect for various surfaces.
Main Highlights
  • Sets in 4-6 hours to a dark grey colour
  • Full cure within 15-24 hours
  • Tensile strength of 5020 PSI
  • Able to withstand temperatures up to 550ºF when fully cured
  • Great for household repairs, automotive, plumbing, marine, crafts & more
  • To use on automotive, brick, concrete, metal and more
Show More
6
J-B Weld™ Syringe Original Cold-Weld™ Two-Part Epoxy System, Ultra-Fast Setting Time, High Strength, Suitable for All Metals and Other Materials, Dark Grey 25ml (Pack of 2)
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J-B Weld™ Syringe Original Cold-Weld™ Two-Part Epoxy System, Ultra-Fast Setting Time, High Strength, Suitable for All Metals and Other Materials, Dark Grey 25ml (Pack of 2)

J-B Weld
Why we love it
  • Exceptional strength for durability.
  • Perfect for automotive repairs.
  • Works with multiple materials.
Main Highlights
  • The information below applies to each unit in the pack
  • HIGH STRENGTH - Exceptionally high strength provides a permanent repair to almost anything.
  • AUTOMOTIVE APPLICATIONS - Perfect for repairing vehicle exhausts, rust damage and other automotive parts.
  • MULTIPLE MATERIALS - Some of the most common repairs are metal including aluminium, brass, copper, iron and stainless steel.
  • HIGH TEMPERATURE - It can withstand temperatures up to 550⁰ when fully cured.
Show More
9.2
Superb
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9.2
Superb
J-B Weld

J-B Weld™ Syringe Original Cold-Weld™ Two-Part Epoxy System, Ultra-Fast Setting Time, High Strength, Suitable for All Metals and Other Materials, Dark Grey 25ml (Pack of 2)

Why we love it
  • Exceptional strength for durability.
  • Perfect for automotive repairs.
  • Works with multiple materials.
Main Highlights
  • The information below applies to each unit in the pack
  • HIGH STRENGTH - Exceptionally high strength provides a permanent repair to almost anything.
  • AUTOMOTIVE APPLICATIONS - Perfect for repairing vehicle exhausts, rust damage and other automotive parts.
  • MULTIPLE MATERIALS - Some of the most common repairs are metal including aluminium, brass, copper, iron and stainless steel.
  • HIGH TEMPERATURE - It can withstand temperatures up to 550⁰ when fully cured.
Show More
7
J-B Weld 8297 HighHeat Temperature Resistant Epoxy Putty Stick, Machine Gray, 2oz
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J-B Weld 8297 HighHeat Temperature Resistant Epoxy Putty Stick, Machine Gray, 2oz

J-B Weld
20% Off
Why we love it
  • Withstands extreme continuous heat.
  • Perfect for high temperature projects.
  • Easy usage and potent adhesive.
Main Highlights
  • Able to withstand continuous heat up to 450 degrees Fahrenheit or intermittent heat up to 500 degrees; 3 times stronger at high temperatures than conventional epoxy putties
  • Great for exhaust manifolds, tail pipes, mufflers, engine blocks, duct work, machinery, and other high temperature projects in need of a bond or a seal
  • Easy to Use; simply cut the required amount of putty, mix it by thoroughly kneading until a uniform color is reached, then press it firmly to the surface to be repaired
  • Adhesive and sealant for extreme temperature applications; when you need to bond metal that gets very hot, whether it's a car muffler or an industrial repair, this is the sealer for you
  • J-B Weld is an American company that proudly manufactures its products in the USA; when you need a repair, you need the World's Strongest Bond.
Show More
9.0
Superb
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9.0
Superb
J-B Weld

J-B Weld 8297 HighHeat Temperature Resistant Epoxy Putty Stick, Machine Gray, 2oz

20% Off
Why we love it
  • Withstands extreme continuous heat.
  • Perfect for high temperature projects.
  • Easy usage and potent adhesive.
Main Highlights
  • Able to withstand continuous heat up to 450 degrees Fahrenheit or intermittent heat up to 500 degrees; 3 times stronger at high temperatures than conventional epoxy putties
  • Great for exhaust manifolds, tail pipes, mufflers, engine blocks, duct work, machinery, and other high temperature projects in need of a bond or a seal
  • Easy to Use; simply cut the required amount of putty, mix it by thoroughly kneading until a uniform color is reached, then press it firmly to the surface to be repaired
  • Adhesive and sealant for extreme temperature applications; when you need to bond metal that gets very hot, whether it's a car muffler or an industrial repair, this is the sealer for you
  • J-B Weld is an American company that proudly manufactures its products in the USA; when you need a repair, you need the World's Strongest Bond.
Show More
8
J-B Weld Plastic/Metal/Oil/Diesel/Petrol Tank Repair Kit Putty

J-B Weld Plastic/Metal/Oil/Diesel/Petrol Tank Repair Kit Putty

J-B Weld
Why we love it
  • Strong adhesive with 900 PSI.
  • Fast set time: 25 minutes.
  • Fully cures in 1 hour.
Main Highlights
  • Strength: 900 PSI
  • Set Time: 25 Minutes
  • Cure Time: 1 Hour
  • Cure Colour: Off White
Show More
8.9
Excellent
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8.9
Excellent
J-B Weld

J-B Weld Plastic/Metal/Oil/Diesel/Petrol Tank Repair Kit Putty

Why we love it
  • Strong adhesive with 900 PSI.
  • Fast set time: 25 minutes.
  • Fully cures in 1 hour.
Main Highlights
  • Strength: 900 PSI
  • Set Time: 25 Minutes
  • Cure Time: 1 Hour
  • Cure Colour: Off White
Show More
9
J-B Weld 8267UK SteelStik Epoxy Putty, dark grey
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J-B Weld 8267UK SteelStik Epoxy Putty, dark grey

J-B Weld
10% Off
Why we love it
  • Versatile for wet or dry.
  • Adaptable to various materials.
  • Strong environmental resistance.
Main Highlights
  • HIGH STRENGTH - Exceptionally high strength provides a permanent repair to almost anything.
  • WET OR DRY SURFACES - Can be used on both wet and dry surfaces.
  • MULTIPLE MATERIALS - Some of the most common repairs are metal including aluminium, brass, copper, iron and stainless steel.
  • ENVIRONMENTAL RESISTANCE - Resistant to water, chemicals and heat.
  • AUTOMOTIVE APPLICATIONS - Perfect for repairing vehicle exhausts, rust damage and other automotive parts.
Show More
8.8
Excellent
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8.8
Excellent
J-B Weld

J-B Weld 8267UK SteelStik Epoxy Putty, dark grey

10% Off
Why we love it
  • Versatile for wet or dry.
  • Adaptable to various materials.
  • Strong environmental resistance.
Main Highlights
  • HIGH STRENGTH - Exceptionally high strength provides a permanent repair to almost anything.
  • WET OR DRY SURFACES - Can be used on both wet and dry surfaces.
  • MULTIPLE MATERIALS - Some of the most common repairs are metal including aluminium, brass, copper, iron and stainless steel.
  • ENVIRONMENTAL RESISTANCE - Resistant to water, chemicals and heat.
  • AUTOMOTIVE APPLICATIONS - Perfect for repairing vehicle exhausts, rust damage and other automotive parts.
Show More
10
J-B Weld 8276 Kwikweld Twin Tube Quick Setting Steel Reinforced 2 Part Epoxy adhesive for Repair, Dark Grey, Two 1 oz tubes
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J-B Weld 8276 Kwikweld Twin Tube Quick Setting Steel Reinforced 2 Part Epoxy adhesive for Repair, Dark Grey, Two 1 oz tubes

J-B Weld
Why we love it
  • Durable and long-lasting bond.
  • Fast setup time.
  • Works on multiple surfaces.
Main Highlights
  • 8276 JB Weld Kwik Weld
  • 8276 JB Weld Kwik Weld
  • 8276 JB Weld Kwik Weld
Show More
8.7
Excellent
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8.7
Excellent
J-B Weld

J-B Weld 8276 Kwikweld Twin Tube Quick Setting Steel Reinforced 2 Part Epoxy adhesive for Repair, Dark Grey, Two 1 oz tubes

Why we love it
  • Durable and long-lasting bond.
  • Fast setup time.
  • Works on multiple surfaces.
Main Highlights
  • 8276 JB Weld Kwik Weld
  • 8276 JB Weld Kwik Weld
  • 8276 JB Weld Kwik Weld
Show More

We scanned 1130 products

We reviewed these offers relevant to the Jb Weld Radiator Repair Kit within online retailers such as Amazon, eBay and other local retailers, ensuring we covered all major brands and models. The products we selected come from trusted brands like J-B Weld, all of which have a reputation for consistently delivering high-quality products that users love and innovative approaches for function & design.
For the best Jb Weld Radiator Repair Kit in the market, we considered we took a deep dive into 5651 online reviews , focusing on elements like user satisfaction, performance in real-world conditions, and long-term reliability. Our ranking also evaluates each review’s relevancy, authenticity, up-to-dateness and depth so that the comparison is more sound.

We concluded that:

  • The clear winner of our analysis is J-B Weld 2120 Radiator Repair Kit. We love many things about this product by J-B Weld. What sets it apart from the competition is Professional quality, permanent repairs. , Simple and easy instructions. , Versatile for multiple applications.
  • The best value product for most shoppers and where user satisfaction is continuously the highest is J-B Weld 8297 HighHeat Temperature Resistant Epoxy Putty Stick, Machine Gray, 2oz (Pack of 2) by J-B Weld based on online reviews by bloggers, experts and online shoppers.
  • The biggest bargain at the moment for Jb Weld Radiator Repair Kit and the best cost-to-value ratio is J-B Weld 8281 Original Cold-Weld Epoxy, Dark Grey, 10 ozat J-B Weld with a 25% discount.
  • Our list of the best Jb Weld Radiator Repair Kit is updated regularly to reflect new releases and changes in product availability, so be sure to check back often for the latest rankings and discounts.