---
product_id: 54027428
title: "LIQUI MOLY Radiator Stop Leak | 150 ml | Cooler additive | SKU: 8956"
brand: "liqui moly"
price: "¥2832"
currency: JPY
in_stock: true
reviews_count: 13
category: "Liqui Moly"
url: https://www.desertcart.jp/products/54027428-liqui-moly-radiator-stop-leak-150-ml-cooler-additive-sku
store_origin: JP
region: Japan
---

# Compatible with all cooling systems Works within 5 minutes Seals micro leaks fast LIQUI MOLY Radiator Stop Leak | 150 ml | Cooler additive | SKU: 8956

**Brand:** liqui moly
**Price:** ¥2832
**Availability:** ✅ In Stock

## Summary

> 🚀 Seal leaks like a pro—drive worry-free and stay ahead of breakdowns!

## Quick Answers

- **What is this?** LIQUI MOLY Radiator Stop Leak | 150 ml | Cooler additive | SKU: 8956 by liqui moly
- **How much does it cost?** ¥2832 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/54027428-liqui-moly-radiator-stop-leak-150-ml-cooler-additive-sku)

## Best For

- liqui moly enthusiasts

## Why This Product

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

## Key Features

- • **Easy Application:** Just add 150 ml directly to the radiator—no mechanic needed, saving you time and money.
- • **Instant Leak Sealing:** Stops pinhole leaks and porous joints quickly to avoid costly repairs.
- • **Trusted by Thousands:** Over 2,000 positive reviews and a top rank in automotive sealants prove its reliability.
- • **Long-Lasting Protection:** Keeps coolant levels stable, reducing frequent top-ups and maintenance hassle.
- • **Universal Compatibility:** Safe and effective for all vehicle cooling systems, including high-performance engines.

## Overview

LIQUI MOLY Radiator Stop Leak is a powerful 150 ml additive designed to quickly seal small leaks and porous joints in vehicle cooling systems. Trusted by thousands with a 4.4-star rating, it works within minutes to stabilize coolant levels, preventing overheating and costly repairs. Compatible with all radiators, it’s the go-to solution for proactive car care and peace of mind on the road.

## Description

LIQUI MOLY Radiator Stop Leak | 150 ml | Cooler additive | SKU: 8956 : desertcart.co.uk: Automotive

Review: Worked well! - Had a pinhole leak on the radiator of my 2010 Volvo XC90 that only became apparent when I changed the water pump. I had thought of changing the rad out but due to needing to use the vehicle for a few jobs I decided to give this a go. It worked perfectly and stopped the leak after 5 minutes. I’d say the fix might outlast the car!
Review: Excellent stuff - This stuff is brilliant, I was having to top up my coolant every 2 days since adding this it's stayed same level well recommended

## Features

- Contains reaction mass of 5-chloro-2-methyl-2H-isothiazol-3-one and 2-methyl-2Hisothiazol-3-one (3:1). May produce an allergic reaction.
- Safety data sheet available on request.
- Small leaks or porous joints or breakage of lines suspended in the cooling system are difficult to detect
- (You notice only a drastic reduction of the coolant level).
- The Anti losses radiator repairs to sealing these types of losses in a timely and definitive.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00448L350 |
| Best Sellers Rank | 757 in Automotive ( See Top 100 in Automotive ) 6 in Fillers, Adhesives & Sealants |
| Brand | Liqui Moly |
| Customer Reviews | 4.4 4.4 out of 5 stars (2,153) |
| Date First Available | 23 Sept. 2010 |
| Exterior | Plastic |
| Item Weight | 150 g |
| Item model number | 8956 |
| Manufacturer | Liqui Moly GmbH |
| Manufacturer part number | 8956 |
| Model | 8956 |
| OEM Part Number | 8956 |
| Product Dimensions | 10 x 5 x 5 cm; 150 g |

## Product Details

- **Brand:** Liqui Moly
- **Colour:** natural
- **Exterior finish:** Plastic
- **Item dimensions L x W x H:** 10 x 5 x 5 centimetres
- **Material:** Aluminium

## Images

![LIQUI MOLY Radiator Stop Leak | 150 ml | Cooler additive | SKU: 8956 - Image 1](https://m.media-amazon.com/images/I/81TNBWScQ6L.jpg)

## Questions & Answers

**Q: My heater matrix inside the car is leaking, any good for this**
A: If I were you I would fit a new one, providing its not a Ford granada ghia!! ? I used this on my radiator on my Suzuki Burgman 650, and the radiator split wide open. It didn't work for me, but then my Suzuki  has a complicated water way  compared to a car.  I bought the product with the best feedback, ( stars)but  you can't beat doing a job properly, I bought a new radiator in the end.

**Q: my astra has a leak coming from the back of the engine could be rubber pipe or freeze plug will this seal it or is it just for the radiator?**
A: Depends on size of leak but there’s no harm in trying it

**Q: My motorcycle radiator is weeping slightly will it be ok to use on this**
A: Definitely will sort it out.

**Q: Can it be used with Antifreeze in the system?**
A: You put it in first to seal off any small leaks then add the anti-freeze.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Worked well!
*by W***D on 4 December 2025*

Had a pinhole leak on the radiator of my 2010 Volvo XC90 that only became apparent when I changed the water pump. I had thought of changing the rad out but due to needing to use the vehicle for a few jobs I decided to give this a go. It worked perfectly and stopped the leak after 5 minutes. I’d say the fix might outlast the car!

### ⭐⭐⭐⭐⭐ Excellent stuff
*by M***L on 28 January 2026*

This stuff is brilliant, I was having to top up my coolant every 2 days since adding this it's stayed same level well recommended

### ⭐⭐⭐⭐ Worth buying
*by M***N on 2 January 2026*

Didn't quite stop the leak entirely, but did enough to make it manageable.

## Frequently Bought Together

- Liqui Moly Radiator Stop Leak | 150 ml | Cooler additive | SKU: 8956
- Liqui Moly Radiator Stop Leak | 250 ml | Cooler additive | SKU: 20132
- LM 1005 Oil Leak Stop 300 ml

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**Shop now:** [https://www.desertcart.jp/products/54027428-liqui-moly-radiator-stop-leak-150-ml-cooler-additive-sku](https://www.desertcart.jp/products/54027428-liqui-moly-radiator-stop-leak-150-ml-cooler-additive-sku)

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-02-06*