---
product_id: 47965944
title: "K-Seal"
brand: "k-seal"
price: "€ 34.81"
currency: EUR
in_stock: true
reviews_count: 13
category: "K Seal"
url: https://www.desertcart.be/products/47965944-k-seal
store_origin: BE
region: Belgium
---

# Permanent multi-point repair Seals leaks in minutes Compatible with all coolants K-Seal

**Brand:** k-seal
**Price:** € 34.81
**Availability:** ✅ In Stock

## Summary

> 🚗 Seal the deal fast—because your engine deserves a leak-proof life!

## Quick Answers

- **What is this?** K-Seal by k-seal
- **How much does it cost?** € 34.81 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.be](https://www.desertcart.be/products/47965944-k-seal)

## Best For

- k-seal enthusiasts

## Why This Product

- Trusted k-seal brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Plug & Play Simplicity:** Just shake, pour, and run—no mechanic required, no downtime wasted.
- • **Universal Compatibility:** Works seamlessly with all antifreeze types and engines up to 12 cylinders—cars and light trucks alike.
- • **Fix It Fast, Drive Longer:** Seals radiator, head gasket, freeze plugs & more in just one step—no draining needed.
- • **Mechanic-Trusted Durability:** Backed by millions sold and ASTM D3147 certification for professional-grade, long-lasting reliability.
- • **One Formula, Total Coverage:** Unique formula seeks out and permanently seals every crack and hole without harming engine efficiency.

## Overview

K-Seal Coolant Leak Repair is a 236ml professional-grade liquid sealant that permanently fixes leaks in radiators, head gaskets, freeze plugs, and more. Compatible with all antifreeze coolants and engines up to 12 cylinders, it requires no draining or flushing—just shake, pour, and drive. Trusted worldwide and independently tested to ASTM D3147 standards, it offers a fast, cost-effective, and durable solution to keep your vehicle’s cooling system leak-free and performing at its best.

## Description

From the brand

Review: Great value product - Great product, works really well!
Review: repaired coolant leak - Worked absolutely a charm saved my car till mot and bought

## Features

- Causes serious eye irritation.
- Contains 5-chloro-2-methyl-2H-isothiazol-3-one and 2-methyl-2H-isothiazol-3-one (3:1) [CMIT/MIT (3:1)]. May produce an allergic reaction.
- Harmful to aquatic life with long lasting effects.
- May cause an allergic skin reaction.
- Toxic to aquatic life with long lasting effects.
- FIX IT FAST: Our multi-purpose solution works in minutes to quickly & permanently seal leaks in the radiator, head gasket, freeze plugs, block, heater matrix & water pump. Fixes most leaks in water-cooled engines.
- STOP HOLES & CRACKS: With just 1 step our unique formula will seek out each hole & crack, permanently sealing them, without any adverse impact on the efficiency of your engine cooling.
- EASY TO USE: K-Seal couldn't be simpler to use & requires no draining or flushing; just shake, pour & go - shake the bottle, add the fluid to your coolant system & run your engine as normal.
- VERSATILE COMPATIBILITY: Compatible with all types of antifreeze coolant. Suitable for use in both cars & light trucks with up to 12 cylinders. A permanent repair for the lifetime of the engine.
- PROFESSIONAL-GRADE RELIABILITY: Trusted by mechanics, our sealer delivers a durable & long-lasting repair. A cost-effective solution to engine coolant leaks, enhancing the reliability & performance of your vehicle’s cooling system. We've sold millions worldwide & are independently verified by university testing to meet ASTM D3147.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B001QT9KO6 |
| Best Sellers Rank | 613 in Automotive ( See Top 100 in Automotive ) 7 in Fillers, Adhesives & Sealants |
| Brand | K-Seal |
| Colour | clear |
| Compatible Material | Alloy Steel, Aluminium, Brass, Copper, Engineered Wood, Fibreglass, Polyvinyl Chloride, Stainless Steel, Plastic |
| Customer Reviews | 4.3 4.3 out of 5 stars (13,214) |
| Global Trade Identification Number | 05060002968017 |
| Item Dimensions | 8.9 x 3.8 x 11.4 centimetres |
| Item Form | Liquid |
| Item Weight | 0.26 Kilograms |
| Manufacturer | K-Seal |
| Manufacturer Part Number | ST5501 |
| Material | Synthetic Resin |
| Model Number | ST5501 |
| Number of Items | 1 |
| Style Name | Compact |
| Supported Standards | ASTM D3147 |
| Surface Recommendation | Vent, Countertop, Sink, Wall |
| UPC | 367157659506 812646010004 |
| Unit Count | 236.0 millilitre |
| Water Resistance Level | Water Resistant |

## Product Details

- **Brand:** K-Seal
- **Item dimensions L x W x H:** 8.9 x 3.8 x 11.4 centimetres
- **Item weight:** 0.26 Kilograms
- **Material:** Synthetic Resin
- **Style:** Compact

## Images

![K-Seal - Image 1](https://m.media-amazon.com/images/I/71nZSCfSgpL.jpg)

## Questions & Answers

**Q: How much would I need for a cooling system of 8.5 litres?**
A: I think one purchase should be sufficient , just Google and double check.

**Q: What long term damage doe's it do to the engine and water system**
A: I used this in a 2004 Rover Streetwise that I bought in 2012. I used as a preventative measure as that particular engine was notorious for headgasket failure and the car is still running in 2022 never having had a problem with the engine except an alternator, so I would say long term damage is ZERO. I have used it in all my cheap runaround cars I have bought as my 3 sons got thier first cars and never had problems with it. Overall it seems to me to be a great product.

**Q: Im doing a coolant flush but when i fill the system back up do i fill with plan water or antifreeze to add the k seal**
A: fill system up as normal using antifreeze and add k-seal

**Q: How much would I need to use for a 1.2L vehicle? Is it the whole bottle or part of the bottle?**
A: I used 2 for a two litre car and sorted my issue which was a head gasket problem.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great value product
*by R***N on 29 March 2026*

Great product, works really well!

### ⭐⭐⭐⭐⭐ repaired coolant leak
*by S***N on 23 March 2026*

Worked absolutely a charm saved my car till mot and bought

### ⭐⭐⭐⭐ Fixed leaky heater matrix in a few minutes
*by D***Y on 10 June 2019*

Had a significant leak from the heater core into driver's footwell. Subsequently the engine was overheating due to lack of fluid in the system. Had this same problem two years ago and replaced the matrix for about £180... I was unwilling to replace it again on such an old car so a mechanic suggested trying K-seal which he used on his own van! With nothing to lose (the car has high mileage and no value except to me as a run about) I poured a bottle in, topped up the coolant levels and went for a drive. I also turned the heater/fans on to allow plenty of fluid through the problem matrix. Went from a steady trickle to no drips after about 10 mins (you need to give it time to work through the system and do its job at operating temperature to work, and it says a bit longer if added to to the expansion tank as I did). Worth noting that coolant levels may still drop a bit after using this due to air locks in the system so expect to top up the coolant a couple of times after use and therefore a lower level doesn't necessarily mean you are still leaking fluid. I guess it's better to replace the problem part if your car is newer and if it makes economic sense but this is a cheap fix for an old car that doesn't owe me anything and so far so good!

## Frequently Bought Together

- K-Seal ST5501 Multi-Purpose One Step Permanent Coolant Leak Repair, 8oz, Pour and Go, Mixes with All Antifreeze, No Flushing Required
- PEAK 50/50 Prediluted Antifreeze and Coolant for All Engine Cooling Systems
- K-Seal ST3501 Pour and Go Head Gasket Sealer, 16oz, Permanent Repair for Blown Head Gaskets, Cracked Heads and Blocks

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**Shop now:** [https://www.desertcart.be/products/47965944-k-seal](https://www.desertcart.be/products/47965944-k-seal)

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*Product available on Desertcart Belgium*
*Store origin: BE*
*Last updated: 2026-05-05*