---
product_id: 8435808
title: "HDC Radiator Stop Leak Tablet - 60 Grams, Brown | Simple-to-use radiator treatment solution requiring no special installation equipment"
brand: "bar's leaks"
price: "$24.11"
currency: USD
in_stock: true
category: "Bar's Leaks"
url: https://www.desertcart.us/products/8435808-hdc-radiator-stop-leak-tablet-60-grams-brown-simple-to
store_origin: US
region: United States of America
---

# Lubricates water pump seals Seals leaks fast Inhibits rust & corrosion HDC Radiator Stop Leak Tablet - 60 Grams, Brown | Simple-to-use radiator treatment solution requiring no special installation equipment

**Brand:** bar's leaks
**Price:** $24.11
**Availability:** ✅ In Stock

## Summary

> 🚗💨 Fix leaks like a pro—stay road-ready and leak-free!

## Quick Answers

- **What is this?** HDC Radiator Stop Leak Tablet - 60 Grams, Brown | Simple-to-use radiator treatment solution requiring no special installation equipment by bar's leaks
- **How much does it cost?** $24.11 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/8435808-hdc-radiator-stop-leak-tablet-60-grams-brown-simple-to)

## Best For

- bar's leaks enthusiasts

## Why This Product

- Trusted bar's leaks brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **OEM trusted formula:** Used by automakers worldwide for 30+ years
- • **Easy DIY maintenance:** No special skills needed—just drop in and go
- • **Electrolysis control:** Balances pH to extend radiator life
- • **Leak-proof your drive:** Stops radiator leaks without a mechanic’s bill
- • **Rust & corrosion defense:** Protects your cooling system from costly damage

## Overview

Bar's Leaks HDC Radiator Stop Leak Tablet is a powerful chemical-based solution designed to seal radiator leaks, inhibit rust and corrosion, lubricate water pump seals, and control electrolysis. Compatible with aluminum and metal radiators, this easy-to-use tablet offers OEM-grade performance trusted by automakers for over 30 years, enabling quick, affordable radiator maintenance without a mechanic.

## Description

We all love using our tablets these days — reading, gaming, surfing the web, you name it! Unfortunately, that kind of tablet won’t be able to fix your leaky radiator. Like so many of the parts on your vehicle, your radiator needs regular maintenance to remain in tip-top condition. When you need radiator leak repair, you may be picturing a time-consuming and expensive trip to the mechanic. But, with Bar’s Leaks, that doesn’t have to be your reality when searching to repair a radiator leak. Our product engineers created these Bar’s Leaks Radiator Stop Leak Tablets to repair radiator leaks from within so you can get back on the road in no time. These tablets might not be able to surf the web, but they are definitely more powerful than you think. But what our radiator leak repair tablets offer in effectiveness, they don’t sacrifice in usability or affordability. In fact, you need no special automotive expertise to apply our tablets to repair radiator leaks. Our Radiator Stop Leak Tablets inhibit the formation of rust and scale, neutralize pH imbalance, control electrolysis, lubricate and seal internal, external and coolant-to-oil leaks. Imagine getting that range of effectiveness in a product you can buy off the shelf rather than through service only a mechanic can provide. In fact, this is the same product that’s been used right on the assembly line by OEM automakers around the world for 30+ years. This solution is the result of careful research and testing on the part of our team of top-flight chemical engineers. They work each day to improve existing products like our radiator leak repair tablets, as well as to develop new products to keep up with the latest in automotive innovations and technologies. Your leak’s days are numbered. Pick up a pack at your nearest auto parts store and make sure you watch our how-to video for an easy step-by-step installation process.

## Features

- Seals leaks
- Conditions cooling system
- Inhibits rust and corrosion
- Lubricates water pump seals
- Helps control electrolysis

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B000KKND3Q |
| Best Sellers Rank | #187,873 in Automotive ( See Top 100 in Automotive ) #12 in Radiator Sealers |
| Brand Name | Bar's Leaks |
| Color | Brown |
| Compatible Material | Aluminum, Metal |
| Customer Reviews | 4.3 4.3 out of 5 stars (951) |
| Global Trade Identification Number | 00046087000069 |
| Included Components | Auto part, Automotive Accessories, Replacement and Performance parts |
| Item Dimensions | 7.5 x 5 x 0.8 inches |
| Item Form | Tablets |
| Item Type Name | Radiator Stop Leak Dsply |
| Item Weight | 1.6 ounces |
| Manufacturer | Bar's Leaks |
| Material Type | Chemical-based sealant |
| Model | HDC |
| Number of Items | 1 |
| Part Number | HDC |
| Supported Standards | Radiator sealant standards for aluminum and metal compatibility |
| Surface Recommendation | Aluminum/Metal |
| UPC | 046087000069 |
| Unit Count | 2.11 Ounce |
| Warranty Description | Manufacturer Warranty |
| Water Resistance Level | Not Water Resistant |

## Product Details

- **Brand:** Bar's Leaks
- **Item Weight:** 1.6 ounces
- **Item dimensions L x W x H:** 7.5 x 5 x 0.8 inches
- **Material:** Chemical-based sealant
- **Water Resistance Level:** Not Water Resistant

## Images

![HDC Radiator Stop Leak Tablet - 60 Grams, Brown | Simple-to-use radiator treatment solution requiring no special installation equipment - Image 1](https://m.media-amazon.com/images/I/71bMUTltgqL.jpg)

## Available Options

This product comes in different **Size** options.

## Questions & Answers

**Q: Will this also stop small leaks in a heater core?**
A: Heater core leaks can be tough...... but yes... It should

**Q: Will tablets clog radiator or any systems in SUVs?**
A: I don't believe that this particular product will clog the radiator, hoses or heater core in any vehicle.  I purchased this particular product because for my vehicle, a GM V-8 car from 2003, these tablets are added to the coolant both by the manufacturer when the car is first assembled and by the dealer when the coolant is being changed.  These tablets are listed as a requirement to prevent trouble going forward.  With 150,000 miles on the vehicle at this point with these tablets being in the coolant from day one, I've had no cooling system issues.  These tablets are made of very finely ground up walnut shells and are not made with synthetic polymers or sealants.

**Q: Will this product work and be compatable with the oat purple antifreeze in a 2014 jeep grand cherokee?**
A: Does not work, don’t waste your money

**Q: i have my dads cadilliac ,,with a pin hole in readiator...seems the radiator cap is on the reservoir..can i put these in reservoir??? thanks!!**
A: Thank you for your question, and for considering Bar's Leaks Radiator Stop Leak Tablets (part number HDC) to help with a pinhole leak in the Cadillac radiator. As long as the coolant reservoir is pressurized, you may add the tablets there. For quicker results, you can also crumble the tablets up a little bit before installing them. The proper dosage is 2 tablets per gallon of coolant, and we do recommend installing them into a clean cooling system, following the instructions.

If you have any other questions, or we may be of additional assistance, please feel free to call our Tech Support Team at 1-800-345-6572. We are here to assist you Monday through Friday, from 8 am to 5 pm, Eastern time.

## Frequently Bought Together

- Bar's Leaks HDC Radiator Stop Leak Tablet - 60 Grams, Brown
- Bar's Leaks PLT11 Pelletized HD Radiator Stop Leak - 11 oz.
- K-Seal ST5501 Multi-Purpose One Step Permanent Coolant Leak Repair, 8oz, Pour and Go, Mixes with All Antifreeze, No Flushing Required

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-08-10*