--- product_id: 54027428 title: "Radiator Stop Leak | 150 ml | Cooler additive | SKU: 8956" brand: "liqui moly" price: "€ 24.64" currency: EUR in_stock: true category: "Liqui Moly" url: https://www.desertcart.sk/products/54027428-radiator-stop-leak-150-ml-cooler-additive-sku-8956 store_origin: SK region: Slovakia --- # Universal fit for all cars Stops leaks in 5 minutes Permanent, reliable seal Radiator Stop Leak | 150 ml | Cooler additive | SKU: 8956 **Brand:** liqui moly **Price:** € 24.64 **Availability:** ✅ In Stock ## Summary > 🛠️ Fix leaks fast, drive worry-free — the ultimate radiator lifesaver! ## Quick Answers - **What is this?** Radiator Stop Leak | 150 ml | Cooler additive | SKU: 8956 by liqui moly - **How much does it cost?** € 24.64 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/54027428-radiator-stop-leak-150-ml-cooler-additive-sku-8956) ## 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 - • **Rapid Leak Repair:** Seals pinholes and porous joints within minutes, saving you time and costly repairs. - • **Compact & Convenient:** 150 ml screw-in bottle fits easily in your garage toolkit for emergency fixes anytime. - • **Trusted by Thousands:** Rated 4.5 stars by over 2,300 users who swear by its first-time effectiveness. - • **Long-Lasting Protection:** Provides a durable, permanent seal that outperforms temporary fixes and keeps your engine safe. - • **Universal Compatibility:** Engineered to work seamlessly with all car cooling systems for hassle-free application. ## Overview LIQUI MOLY Radiator Stop Leak is a 150 ml cooler additive designed to permanently seal small leaks and porous joints in car radiators. Compatible with all vehicle types, it acts quickly—stopping leaks within 5 minutes—and is trusted by thousands of users for its reliable, long-lasting performance. This universal-fit, screw-in formula saves you costly repairs and keeps your cooling system running smoothly. ## Description LIQUI MOLY Radiator Stop Leak | 150 ml | Cooler additive | SKU: 8956 : desertcart.co.uk: Automotive ## 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 caused by stone impacts, porous soldering points and hairline cracks in the cooling simple are easy to localize (one notices that the cooling water level is sinking) - Used for sealing small leaks in cooling circuits of passenger motor vehicles, commercial vehicles, buses and two-wheel vehicles; also suitable for cooling circuit with filters - Shake container before use; run the heating system; with the engine running, pour the contents into the cooling fluid at operating temperature and allow the engine to continue running for a further 10 minutes - 8956 ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B00448L350 | | Automotive Fit Type | Universal Fit | | Best Sellers Rank | 2,190 in Automotive ( See Top 100 in Automotive ) 28 in Fillers, Adhesives & Sealants | | Brand Name | Liqui Moly | | Closure Type | Screw-In | | Colour | natural | | Compatible with Vehicle Type | Car | | Country Of Origin | France | | Customer Reviews | 4.5 4.5 out of 5 stars (2,393) | | Exterior Finish | Aluminium | | Global Trade Identification Number | 04100420089565 | | Included Components | 1. | | Item Dimensions | 10 x 5 x 5 centimetres | | Item Type Name | Radiator Stop Leak Sealant | | Item Weight | 0.15 Kilograms | | Manufacturer | Liqui Moly | | Manufacturer Part Number | 21510 | | Material Type | Aluminium | | Model Number | 21510 | | Number of Items | 1 | | Number of Packs | 1 | | OEM Equivalent Part Number | 8956 | | Style Name | Modern | ## Product Details - **Brand:** Liqui Moly - **Colour:** natural - **Exterior finish:** Aluminium - **Item dimensions L x W x H:** 10 x 5 x 5 centimetres - **Material:** Aluminium ## Images ![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. ## 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 --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.sk/products/54027428-radiator-stop-leak-150-ml-cooler-additive-sku-8956](https://www.desertcart.sk/products/54027428-radiator-stop-leak-150-ml-cooler-additive-sku-8956) --- *Product available on Desertcart Slovakia* *Store origin: SK* *Last updated: 2026-10-20*