---
product_id: 8435808
title: "Bar's Leaks HDC-12PK Radiator Stop Leak Tablet - 2.1 oz., (Pack of 12)"
brand: "bar's leaks"
price: "€ 91.17"
currency: EUR
in_stock: true
category: "Bar's Leaks"
url: https://www.desertcart.sk/products/8435808-bars-leaks-hdc-12pk-radiator-stop-leak-tablet-2-1
store_origin: SK
region: Slovakia
---

# Lubricates water pump seals Seals leaks fast Inhibits rust & corrosion Bar's Leaks HDC-12PK Radiator Stop Leak Tablet - 2.1 oz., (Pack of 12)

**Brand:** bar's leaks
**Price:** € 91.17
**Availability:** ✅ In Stock

## Summary

> 🚗 Leak-proof your ride, stress-free and on the go!

## Quick Answers

- **What is this?** Bar's Leaks HDC-12PK Radiator Stop Leak Tablet - 2.1 oz., (Pack of 12) by bar's leaks
- **How much does it cost?** € 91.17 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sk](https://www.desertcart.sk/products/8435808-bars-leaks-hdc-12pk-radiator-stop-leak-tablet-2-1)

## 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 over 30 years—proven reliability.
- • **Compact & Convenient:** Easy-to-use tablets fit perfectly into your maintenance routine.
- • **Multi-Action Protection:** Seals leaks, controls electrolysis, and prevents rust in one tablet.
- • **Universal Compatibility:** Works seamlessly with aluminum and metal cooling systems.
- • **Mechanic-Free Leak Repair:** Fix radiator leaks effortlessly without costly service calls.

## Overview

Bar's Leaks HDC-12PK Radiator Stop Leak Tablets offer a professional-grade, easy-to-use solution to seal radiator leaks, inhibit rust and corrosion, lubricate water pump seals, and control electrolysis. Trusted by OEMs for over 30 years, these tablets provide a cost-effective, mechanic-free way to maintain your vehicle’s cooling system and keep you confidently on the road.

## 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 leak
- Conditions cooling system
- Inhibits rust and corrosion
- Lubricates water pump seals
- Helps control electrolysis

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00BYS7COE |
| Best Sellers Rank | #347,488 in Automotive ( See Top 100 in Automotive ) #19 in Radiator Sealers |
| Brand Name | Bar's Leaks |
| Color | Light Brown |
| Compatible Material | Aluminum, Metal |
| Customer Reviews | 4.2 4.2 out of 5 stars (955) |
| Global Trade Identification Number | 10046087000066 |
| Included Components | Item |
| Item Dimensions | 0.8 x 5 x 7.5 inches |
| Item Form | Tablets |
| Item Weight | 3.2 ounces |
| Manufacturer | Bar's Leaks |
| Material Type | Acrylic, Polyurethane |
| Model | HDC-12PK |
| Number of Items | 12 |
| Number of Packs | 1 |
| Part Number | HDC-12PK |
| Surface Recommendation | Miscellaneous |
| Unit Count | 25.2 Ounce |
| Warranty Description | No |
| Water Resistance Level | Water Resistant |

## Product Details

- **Brand:** Bar's Leaks
- **Item Weight:** 3.2 ounces
- **Item dimensions L x W x H:** 0.8 x 5 x 7.5 inches
- **Material:** Acrylic, Polyurethane
- **Water Resistance Level:** Water Resistant

## Images

![Bar's Leaks HDC-12PK Radiator Stop Leak Tablet - 2.1 oz., (Pack of 12) - 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 Slovakia*
*Store origin: SK*
*Last updated: 2026-08-25*