---
product_id: 109526954
title: "J-B Weld 2120 Radiator Repair Kit"
brand: "j-b weld"
price: "$112.09"
currency: USD
in_stock: true
reviews_count: 2
category: "J B Weld"
url: https://www.desertcart.ec/products/109526954-j-b-weld-2120-radiator-repair-kit
store_origin: EC
region: Ecuador
---

# Repairs holes up to 3/8" & cracks 4" No tank removal, quick fix Permanent professional-grade bond J-B Weld 2120 Radiator Repair Kit

**Brand:** j-b weld
**Price:** $112.09
**Availability:** ✅ In Stock

## Summary

> 🛠️ Seal it once, seal it strong—because leaks don’t wait!

## Quick Answers

- **What is this?** J-B Weld 2120 Radiator Repair Kit by j-b weld
- **How much does it cost?** $112.09 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ec](https://www.desertcart.ec/products/109526954-j-b-weld-2120-radiator-repair-kit)

## Best For

- j-b weld enthusiasts

## Why This Product

- Trusted j-b weld brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Unmatched Durability:** Experience the world’s strongest bond trusted by pros for over 40 years.
- • **All-in-One Repair Kit:** Includes epoxy putty, fiberglass cloth, sandpaper, and applicator for a seamless fix.
- • **Versatile Application:** Perfect for radiators, plastic tanks, PVC, composites, and more—one kit, endless solutions.
- • **DIY Confidence Booster:** Join thousands of mechanics and DIYers who swear by J-B Weld’s reliable, permanent repairs.
- • **Effortless Leak Stopping:** Fix radiator and plastic tank leaks without removing parts—save time and hassle.

## Overview

The J-B Weld 2120 Radiator Repair Kit delivers a professional-grade, permanent solution for radiator and plastic tank leaks. Designed for quick, no-removal repairs on holes up to 3/8" and cracks up to 4", this versatile kit includes epoxy putty, fiberglass cloth, sandpaper, and an applicator. Trusted by professionals and DIY enthusiasts for over 40 years, it ensures durable, reliable fixes on a variety of surfaces including plastics, composites, and metals.

## Description

Plastic Tank & Radiator Repair Kit. Works on Plastic Tanks & Metal Surfaces. Stops Leaks. No Removal Required.

Review: Jb weld excellent - Very good product excellent service recommended 5stars
Review: It does what is claimed in the advert. - Worked perfectly for the minor repair on my motorcycle radiator after following the simple instructions before hand. Easy to use, 100% successes and well worth the wait from its USA seller.

## Features

- Causes serious eye irritation.
- Causes skin irritation.
- May cause an allergic skin reaction.
- 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.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | JBWeld |
| Brand | J-B Weld |
| Model | J-B Weld 2120 Radiator and Plastic Repair Kit |
| Product Dimensions | 5.08 x 10.16 x 20.32 cm; 50 g |
| Item model number | 2120 |
| Manufacturer part number | 2120 |
| Item Weight | 50 g |

## Images

![J-B Weld 2120 Radiator Repair Kit - Image 1](https://m.media-amazon.com/images/I/71jfMGwMIFL.jpg)
![J-B Weld 2120 Radiator Repair Kit - Image 2](https://m.media-amazon.com/images/I/811dGeBkMrL.jpg)
![J-B Weld 2120 Radiator Repair Kit - Image 3](https://m.media-amazon.com/images/I/910wemEMChL.jpg)
![J-B Weld 2120 Radiator Repair Kit - Image 4](https://m.media-amazon.com/images/I/91BOjpX4AiL.jpg)

## Questions & Answers

**Q: Does this work on aluminum ?**
A: Yes, it is absolutely miraculous. It exceeded my expectations.

**Q: why it is temp fix? crack due to vibration? how long it can last?**
A: It will usually last a year as long as the car does not overheat which can cause too much pressure on the patched area

**Q: Does j-b weld 2120 really work on radiatots?**
A: It does if you work fast with it.

**Q: I have a leak on a small stem (i think is aluminum) at the seam that holds a small rubber hose that antifreeze runs though, the small stem gets hot.**
A: My honest opinion is this isn't going to work for your issue.... I used this on my plastic radiator at the top in small crack. It worked for couple weeks and had to buy new radiator...  don't waste your money

## Customer Reviews

### ⭐⭐⭐⭐⭐ Jb weld excellent
*by J***N on 4 February 2026*

Very good product excellent service recommended 5stars

### ⭐⭐⭐⭐⭐ It does what is claimed in the advert.
*by M***N on 16 August 2025*

Worked perfectly for the minor repair on my motorcycle radiator after following the simple instructions before hand. Easy to use, 100% successes and well worth the wait from its USA seller.

## Frequently Bought Together

- J-B Weld 2120 Radiator Repair Kit
- J-B Weld High Heat Epoxy Syringe, Dark Grey
- J-B Weld 8297 HighHeat 500 Degree Epoxy Putty Stick - 2 oz. , Grey

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**Shop now:** [https://www.desertcart.ec/products/109526954-j-b-weld-2120-radiator-repair-kit](https://www.desertcart.ec/products/109526954-j-b-weld-2120-radiator-repair-kit)

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*Product available on Desertcart Ecuador*
*Store origin: EC*
*Last updated: 2026-02-25*