---
product_id: 47965944
title: "K-Seal Coolant Leak, 236ml | Multi-use Car Radiator & Head Gasket Repair Sealant"
brand: "k-seal"
price: "€ 33.20"
currency: EUR
in_stock: true
reviews_count: 8
category: "K Seal"
url: https://www.desertcart.de/products/47965944-k-seal-coolant-leak-236ml-multi-use-car-radiator-head
store_origin: DE
region: Germany
---

# Permanent multi-point repair Seals leaks in minutes Compatible with all coolants K-Seal Coolant Leak, 236ml | Multi-use Car Radiator & Head Gasket Repair Sealant

**Brand:** k-seal
**Price:** € 33.20
**Availability:** ✅ In Stock

## Summary

> 🚗 Seal the deal, skip the shop—coolant leaks fixed fast!

## Quick Answers

- **What is this?** K-Seal Coolant Leak, 236ml | Multi-use Car Radiator & Head Gasket Repair Sealant by k-seal
- **How much does it cost?** € 33.20 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.de](https://www.desertcart.de/products/47965944-k-seal-coolant-leak-236ml-multi-use-car-radiator-head)

## 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

- • **Pour & Go Simplicity:** No draining or flushing needed—just shake, add, and run your engine.
- • **One-Step Leak Sealing:** Unique formula targets every crack & hole for a permanent fix.
- • **Mechanic-Trusted Durability:** Professional-grade, ASTM-tested sealant trusted worldwide for lasting reliability.
- • **Fix It Fast, Drive Confident:** Seals radiator, head gasket & more in minutes—no downtime, no hassle.
- • **Universal Coolant Compatibility:** Works seamlessly with all antifreeze types and engines up to 12 cylinders.

## Overview

K-Seal Coolant Leak is a 236ml professional-grade sealant that permanently repairs leaks in radiators, head gaskets, freeze plugs, and more. Compatible with all antifreeze coolants and engines up to 12 cylinders, it works in minutes without draining or flushing. Trusted by mechanics and independently ASTM D3147 tested, it offers a cost-effective, durable solution to keep your engine running cool and leak-free.

## Description

Product Description

Review: It genuinely works! - It’s amazing stuff. Sorted a mysterious coolant leak in minutes. First time since I got the car that I haven’t had to top up after a long journey. Seems to be a permanent fix too.
Review: Great value - Worked so goo, great value for the money

## 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 | 826 in Automotive ( See Top 100 in Automotive ) 4 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 | 4.4 out of 5 stars 12,948 Reviews |
| Global Trade Identification Number | 05060002968017 |
| Item Dimensions | 8.9 x 3.8 x 11.4 centimetres |
| Item Form | Liquid |
| Item Weight | 0.26 Kilograms |
| Item dimensions L x W x H | 8.9 x 3.8 x 11.4 centimetres |
| Item height | 4.5 inches |
| Item weight | 0.26 Kilograms |
| Manufacturer | K-Seal |
| Material | Synthetic Resin |
| Style | Compact |
| Style Name | Compact |
| Supported Standards | ASTM D3147 |
| Surface Recommendation | Vent, Countertop, Sink, Wall |
| UPC | 367157659506 812646010004 |
| Unit Count | 236.0 millilitre(s) |
| Water Resistance Level | Water Resistant |
| 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 Coolant Leak, 236ml | Multi-use Car Radiator & Head Gasket Repair Sealant - 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

### ⭐⭐⭐⭐⭐ It genuinely works!
*by B***S on 13 September 2025*

It’s amazing stuff. Sorted a mysterious coolant leak in minutes. First time since I got the car that I haven’t had to top up after a long journey. Seems to be a permanent fix too.

### ⭐⭐⭐⭐⭐ Great value
*by T***E on 1 January 2026*

Worked so goo, great value for the money

### ⭐⭐⭐⭐ Car coolant leak
*by M***Y on 15 October 2025*

Good product helppul

## 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.de/products/47965944-k-seal-coolant-leak-236ml-multi-use-car-radiator-head](https://www.desertcart.de/products/47965944-k-seal-coolant-leak-236ml-multi-use-car-radiator-head)

---

*Product available on Desertcart Germany*
*Store origin: DE*
*Last updated: 2026-01-26*