---
product_id: 47965944
title: "Coolant Leak, 236ml | Multi-use Car Radiator & Head Gasket Repair Sealant"
brand: "k-seal"
price: "184 Lei"
currency: RON
in_stock: true
reviews_count: 13
category: "K Seal"
url: https://www.desertcart.ro/products/47965944-coolant-leak-236ml-multi-use-car-radiator-and-head-gasket
store_origin: RO
region: Romania
---

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

**Brand:** k-seal
**Price:** 184 Lei
**Availability:** ✅ In Stock

## Summary

> 🚀 Seal the deal fast—never let a leak slow your drive!

## Quick Answers

- **What is this?** Coolant Leak, 236ml | Multi-use Car Radiator & Head Gasket Repair Sealant by k-seal
- **How much does it cost?** 184 Lei with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ro](https://www.desertcart.ro/products/47965944-coolant-leak-236ml-multi-use-car-radiator-and-head-gasket)

## 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

- • **Fix it Fast:** Stop leaks in minutes without downtime
- • **One-Step Magic:** Shake, pour, and go—no draining needed
- • **Engine-Wide Coverage:** Seals radiator, head gasket, freeze plugs & more
- • **Universal Compatibility:** Works with all antifreeze coolants & engines up to 12 cylinders
- • **Mechanic-Trusted Durability:** Proven, cost-effective, and independently tested

## Overview

K-Seal is a professional-grade, synthetic resin coolant system additive that permanently seals leaks in water-cooled engines. Compatible with all antifreeze types and engines up to 12 cylinders, it fixes radiator, head gasket, freeze plug, block, heater matrix, and water pump leaks in minutes without draining or flushing. Trusted by mechanics worldwide and independently verified, it offers a cost-effective, durable solution to engine coolant leaks.

## Description

From the brand

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 |
| Batteries Required? | No |
| Batteries included? | No |
| Best Sellers Rank | 850 in Automotive ( See Top 100 in Automotive ) 6 in Fillers, Adhesives & Sealants |
| Colour | clear |
| Customer Reviews | 4.4 4.4 out of 5 stars (12,964) |
| Date First Available | 15 Nov. 2009 |
| Item Package Quantity | 1 |
| Item Weight | 260 g |
| Item model number | ST5501 |
| Manufacturer | K-Seal |
| Material | Synthetic Resin |
| Part number | ST5501 |
| Product Dimensions | 8.89 x 3.81 x 11.43 cm; 260 g |
| Style | Compact |
| Volume | 236 Millilitres |

## 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

![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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*Product available on Desertcart Romania*
*Store origin: RO*
*Last updated: 2026-02-03*