Skip to content
TOUGH JOBS DONE RIGHT: Serious Tools Up to 50% Off. Shop the Deals >
Northern Tool Equipment Logo TextNorthern Tool Equipment Logo text link to Home.

Free Gift Card on All Orders Over $100 See Details

Free Gift Card Details

$100 Order
$10
gift card
$250 Order
$25
gift card
$500 Order
$50
gift card
$1000 Order
$100
gift card
  • The promotion will be automatically applied on the Shopping Cart page.
  • To qualify for this offer, your order subtotal must equal $100 or more. Excludes gift cards, free item offers, warranties, Advantage memberships, tax and shipping.
  • Free gift cards will be issued in the form of e-gift cards only, not physical gift cards.
  • E-gift cards will be sent to the email address used in your billing address when your order ships or is picked up.
  • Free e-gift cards expire 10/01/26.
  • Promo code not valid on prior purchases or on Honda and STIHL products and cannot be combined with other promotional offers.
  • Valid online and in participating retail stores.
  • Limited-time offer. Subject to change without notice.
Print

JB Weld RadiatorWeld Repair Kit — Rapid Repair Time, High Heat Resistance, Seals Cracks Up to 4in., Model# JBW2120

Item# 7162740
JB Weld RadiatorWeld Repair Kit — Rapid Repair Time, High Heat Resistance, Seals Cracks Up to 4in., Model# JBW2120

This is a carousel with one large zoomable image and a track of thumbnails on the left. Select any of the thumbnail buttons to change the zoomable image on the right. If a thumbnail is a video or 360 degree image thumbnail, or the last thumbnail in the list, the button will open the product media modal.

JB Weld RadiatorWeld Repair Kit — Rapid Repair Time, High Heat Resistance, Seals Cracks Up to 4in., Model# JBW2120

Click or Tap image to Zoom

$21.99

  • Shipping: 

    Factory shipped

  • Store Pickup: 

    Not available - online only
  • Rapid Repair Time: Sets in 5 minutes, fully cures in 4 hours
  • High Heat Resistance: Withstands temperatures up to 250°F
  • Chemical Resistant: Formulated to hold up against automotive fluids
  • Multi-Material Compatibility: Bonds to metal and plastic/composite/PVC
  • Permanent or Temporary Fix: Ideal for emergency or long-term radiator repairs

See full description

  • Description

  • Key Specs

  • Reviews

  • Q & A

  • Compare

Product Summary

The J-B Weld RadiatorWeld™ Repair Kit is a complete solution for quick and effective radiator repairs on both metal and plastic tanks. Designed to seal cracks up to 4in. long and holes up to 1/4in. in diameter, this two-part epoxy kit provides a strong, lasting bond that resists chemicals and temperatures up to 250°F. Ideal for automotive applications, RadiatorWeld sets in just 5 minutes and fully cures in 4 hours. Whether you're on the road or in the shop, this compact, carded repair kit helps you avoid costly replacements and downtime. Please note that this kit is not recommended for polyethylene or polypropylene repairs.

What's Included

    (1) J-B Weld RadiatorWeld™ epoxy components, Surface preparation accessories, Detailed instructions for application and curing

Features + Benefits

  • Rapid Repair Time: Sets in 5 minutes, fully cures in 4 hours
  • High Heat Resistance: Withstands temperatures up to 250°F
  • Chemical Resistant: Formulated to hold up against automotive fluids
  • Multi-Material Compatibility: Bonds to metal and plastic/composite/PVC
  • Permanent or Temporary Fix: Ideal for emergency or long-term radiator repairs
  • Automotive Ready: Designed for use on radiators and plastic tanks in cars, trucks, and more
  • Compact Kit Format: Conveniently carded for easy storage or transport

Key Specs

AttributeSpecification

item#

7162740

Brand

JB Weld

Ship Weight

0.13 LB
AttributeSpecification

Product Weight

0.1300 lb

Dimensions L x W x H (in.)

7.87 x 4.94 x 1.5 in

Reviews

Questions & Answers

Questions

Recently Viewed Items

This is a carousel with auto-rotating slides. Activate any of the buttons to disable rotation. Use Next and Previous buttons to navigate, or jump to a slide with the slide dots.