Does this work on aluminum ?

Yes, it is absolutely miraculous. It exceeded my expectations.

why it is temp fix? crack due to vibration? how long it can last?

It will usually last a year as long as the car does not overheat which can cause too much pressure on the patched area

Does j-b weld 2120 really work on radiatots?

It does if you work fast with it.

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.

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

Fully operational. Shipping worldwide, on schedule.Duty & taxes paid at delivery

Help Track order

Account Cart

Fully operational. Shipping worldwide, on schedule.Duty & taxes paid at delivery

Help Track order

Account Cart

J-B Weld 2120 Radiator Repair Kit

Product ID: 32648339

Details

Brand
J-B Weld
Item Form
Liquid
Material
Plastic Resin
Special Feature
No Removal
Specific Uses For Product
Repair

⏳Sets in under 1 minute

🧴Complete kit with epoxy, fiberglass & applicator

🛠️Permanent professional-grade bond

₨545

Duties & taxes included

In stock

Sold byAmazon SeychellesDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Seychelles.

Secure transaction

Description

🛠️ Fix it once, fix it forever—join the 40-year legacy of unstoppable repairs!

UNMATCHED DURABILITY - Trusted for 40+ years, delivers the world’s strongest bond for lasting repairs.
ALL IN ONE REPAIR KIT - Includes epoxy putty, fiberglass cloth, sandpaper & brush for a seamless DIY experience.
PRECISION APPLICATION - Quick-setting formula demands small batches for flawless, professional results every time.
EFFORTLESS LEAK FIXING - No radiator removal needed—repair holes up to 3/8" and cracks up to 4" fast.
VERSATILE COMPATIBILITY - Works on plastic tanks, metal surfaces, PVC, composites—perfect for pros and DIYers alike.

The J-B Weld 2120 Radiator Repair Kit is a professional-grade, all-in-one solution designed to permanently seal leaks and cracks in plastic and metal radiators without removal. Featuring a fast-setting epoxy putty combined with fiberglass cloth and applicator tools, it enables durable repairs up to 3/8" holes and 4" cracks. Trusted by mechanics and DIYers for over 40 years, this kit offers unmatched bonding strength and versatility across multiple materials, ensuring your radiator stays leak-free on every drive.

Specifications

ASIN	B01IOPE66G
Best Sellers Rank	#10,641 in Automotive ( See Top 100 in Automotive ) #1 in Radiator Sealers #606 in Oils & Fluids
Brand Name	J-B Weld
Compatible Material	Metal
Customer Reviews	4.1 4.1 out of 5 stars (1,055)
Global Trade Identification Number	00043425021205
Included Components	Epoxy Putty^Fiberglass Cloth^Sand Paper^Applicator Brush
Item Form	Liquid
Item Package Quantity	1
Item Type Name	Radiator and Plastic Repair Kit
Item Weight	50 Grams
Manufacturer	JBWeld
Material Type	Plastic, Resin
Model	2120
Number of Pieces	1
Other Special Features of the Product	No Removal Required
Part Number	2120
Specific Uses For Product	Repair
UPC	043425021205
Unit Count	1.0 Count
Warranty Description	As Labelled

Common Questions

Are the products genuine and authentic?+

Yes, all products are sourced directly from authorized retailers in the US, UK, UAE and India. We maintain strict quality control processes and verify each product before shipping. All items come with applicable manufacturer warranties and are covered by our standard return policy.

How long does delivery take and is it reliable?+

Delivery times vary by destination country, typically ranging from 3-9 business days. Each order is fully trackable through our system. We handle all customs clearance and use reliable courier partners for last-mile delivery. You'll receive regular updates about your order status via email and our app.

What is Desertcart? Is it safe to order from?+

Desertcart is an international e-commerce platform operating since 2014. We securely process thousands of orders globally each day. Every product goes through our quality verification process before delivery, and we provide end-to-end order tracking, 24/7 customer support, and a comprehensive returns policy to ensure a safe shopping experience.

How is product pricing calculated?+

Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Farhan Q.

The delivery time was excellent, and the packaging was secure.

2 months ago

Suresh K.

Very impressed with the quality and fast delivery. Will shop here again.

4 days ago

View all Trustpilot reviews

Shop Global, Save with Desertcart

Value for Money

Competitive prices on a vast range of products

Shop Globally

Serving millions of shoppers across more than 100 countries

Enhanced Protection

Trusted payment options loved by worldwide shoppers

Customer Assurance

Trusted payment options loved by worldwide shoppers.

Desertcart App

Shop on the go, anytime, anywhere.

₨545

Duties & taxes included

In stock

Sold byAmazon SeychellesDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Seychelles.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Neha S.

Excellent communication throughout the order process. Product is perfect.

2 weeks ago

Yusuf A.

Fantastic experience overall. Will recommend to friends and family.

1 month ago

View all Trustpilot reviews