--- product_id: 62701243 title: "Radiator Stop Leak | 250 ml | Cooler additive | SKU: 20132" brand: "liqui moly" price: "€ 33.58" currency: EUR in_stock: true reviews_count: 13 category: "Liqui Moly" url: https://www.desertcart.com.cy/products/62701243-radiator-stop-leak-250-ml-cooler-additive-sku-20132 store_origin: CY region: Cyprus --- # Compatible with all cooling systems Protects combustion chamber Instant leak sealing Radiator Stop Leak | 250 ml | Cooler additive | SKU: 20132 **Brand:** liqui moly **Price:** € 33.58 **Availability:** ✅ In Stock ## Summary > 🚗💨 Stop leaks before they stop you! ## Quick Answers - **What is this?** Radiator Stop Leak | 250 ml | Cooler additive | SKU: 20132 by liqui moly - **How much does it cost?** € 33.58 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.com.cy](https://www.desertcart.com.cy/products/62701243-radiator-stop-leak-250-ml-cooler-additive-sku-20132) ## 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 - • **Seal leaks instantly 🛠️:** Stops small cracks and porous points on contact, saving costly repairs. - • **Trusted by thousands with 4.4⭐:** Join the community of savvy drivers who rely on Liqui Moly’s proven formula. - • **Shield your engine’s heart 🔥:** Prevents damage from coolant entering the combustion chamber for lasting engine health. - • **Easy application, no mechanic needed:** Simply add 250 ml to your radiator and drive worry-free. - • **Universal cooling system compatibility 💧:** Works flawlessly with all cooling and heating systems, with or without water filters. ## Overview Liqui Moly Radiator Stop Leak is a 250 ml liquid additive designed to instantly seal small leaks in vehicle cooling systems caused by cracks, stone impacts, or porous soldering. Compatible with all cooling and heating systems, it also protects the combustion chamber from damage due to coolant intrusion. Highly rated and easy to use, it’s a must-have for proactive vehicle maintenance. ## Description Small leaks caused by stone impacts, porous soldering points and hairline cracks in the cooling system can be easily stopped (in addition to leaks not easily seen, by noticing decreasing coolant reservoir levels after rides). Review: Best product. - Stopped coolant leak on Audi Q7 almost immediately. Used it on cold engine and once poured drove the car for 15 mins. Problem solved. The leak was small and undetectable. Review: Fixed Audi A4 Head Gasket Leak (130K) - Audi A4 B7 with 130K miles. On the floor of my garage I discovered a few drips of coolant where my turbo/ECU/cold air box would be. I knew there were AC lines under the engine in that area and I thought maybe I sprung a leak in one of those lines. When I looked under the car I saw where the drip would form for the coolant, I was dripping off a weird spot, the K frame that holds up the engine, so it really was nothing near the far right side of the engine. With a flashlight I looked and found the source of the leak, it was coming out of the side of the aluminum engine block! There was a drippy triangle of coolant dried up coming from the same spot. Oh no! What I discovered was that my engine has suffered a BLOWN HEAD GASKET. I know this Audi A4 2.0T FSI engine runs hot but I didn’t expect it to blow an engine seal. I was bummed. So now I started my research. On the Audi forums and in desertcart reviews. I eventually chose Liqui Moly because it was highly recommended for aluminum engines. I ordered one bottle, followed the instructions with the install and everything was great, no drops of coolant on the garage. Problem solved! Then after about a month I got another small drop on the garage floor, obviously the Liqui Moly Radiator Stop Leak worked but the engine hole in the seal was larger than a one bottle fix. No big deal, I added a second bottle! Now two-three months later there is no coolant leak on the floor and the engine temperature is regular just as it always has been. This engine sealant had no adverse effect on a thermostat or anything else. Liqui Moly is made in Germany and seems to be tailored to the Euro Car industry. I can tell you it works. I’m very pleased. I would recommend. ## Features - LIQUI MOLY Radiator Stop-Leak completely seals such leaks immediately with ease - Secures the combustion chamber from damages caused by coolant admission - For all cooling water and heating systems with and without water filters ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B076ZP45Z5 | | Best Sellers Rank | #19,370 in Automotive ( See Top 100 in Automotive ) #4 in Radiator Sealers | | Brand | Liqui Moly | | Brand Name | Liqui Moly | | Color | Silver | | Customer Reviews | 4.5 out of 5 stars 707 Reviews | | Included Components | RADIATOR ADDITIVE | | Item Form | Liquid | | Item Type Name | Radiator Stop Leak | | Manufacturer | Liqui Moly | | Material | Plastic | | Material Type | Plastic | | Model | 20132 | | Number of Items | 1 | | Number of Packs | 1 | | Part Number | 20132 | | Style | Modern | | Style Name | Modern | | Unit Count | 1 Count | | Warranty Description | Warranty | ## Product Details - **Brand:** Liqui Moly - **Item Form:** Liquid - **Item dimensions L x W x H:** 6.45 x 2.12 x 2.12 inches - **Material:** Plastic - **Style:** Modern ## Images ![Radiator Stop Leak | 250 ml | Cooler additive | SKU: 20132 - Image 1](https://m.media-amazon.com/images/I/615O9mE1UiL.jpg) ![Radiator Stop Leak | 250 ml | Cooler additive | SKU: 20132 - Image 2](https://m.media-amazon.com/images/I/81hHLNGQXgL.jpg) ## Available Options This product comes in different **Size** options. ## Questions & Answers **Q: Have a water cooled 279cc Scooter, will this help a small leak that cant be found?** A: I used this in a semi truck radiator and it worked great **Q: How many bottles do you need for a 11 gallon cooling system** A: I put 4 bottles in 10 gal system which was plenty **Q: Will this be suitable for a 2017 bmw 330i?** A: Yes, I had a temp sensor on my 545 bmw and it sealed it up in under a week was not a leak more like a seep, also theses v8 engines tend to leak at the coolant pipe that pass through the block . used it to maintain the seals also to stop possible future leaks. Dan **Q: Will this work for the coolant transfer pipe?** A: No. If the coolant transfer pipe has a pin hole in it this will not work. The coolant transfer pipe will need to be replaced. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Best product. *by A***I on September 26, 2026* Stopped coolant leak on Audi Q7 almost immediately. Used it on cold engine and once poured drove the car for 15 mins. Problem solved. The leak was small and undetectable. ### ⭐⭐⭐⭐⭐ Fixed Audi A4 Head Gasket Leak (130K) *by A***R on March 10, 2020* Audi A4 B7 with 130K miles. On the floor of my garage I discovered a few drips of coolant where my turbo/ECU/cold air box would be. I knew there were AC lines under the engine in that area and I thought maybe I sprung a leak in one of those lines. When I looked under the car I saw where the drip would form for the coolant, I was dripping off a weird spot, the K frame that holds up the engine, so it really was nothing near the far right side of the engine. With a flashlight I looked and found the source of the leak, it was coming out of the side of the aluminum engine block! There was a drippy triangle of coolant dried up coming from the same spot. Oh no! What I discovered was that my engine has suffered a BLOWN HEAD GASKET. I know this Audi A4 2.0T FSI engine runs hot but I didn’t expect it to blow an engine seal. I was bummed. So now I started my research. On the Audi forums and in Amazon reviews. I eventually chose Liqui Moly because it was highly recommended for aluminum engines. I ordered one bottle, followed the instructions with the install and everything was great, no drops of coolant on the garage. Problem solved! Then after about a month I got another small drop on the garage floor, obviously the Liqui Moly Radiator Stop Leak worked but the engine hole in the seal was larger than a one bottle fix. No big deal, I added a second bottle! Now two-three months later there is no coolant leak on the floor and the engine temperature is regular just as it always has been. This engine sealant had no adverse effect on a thermostat or anything else. Liqui Moly is made in Germany and seems to be tailored to the Euro Car industry. I can tell you it works. I’m very pleased. I would recommend. ### ⭐⭐⭐⭐⭐ Reliable Quick Fix for Minor Leaks – Works Like a Charm *by A***R on July 27, 2025* I recently tried Liqui Moly Radiator Stop Leak in my older vehicle that had developed a small coolant leak, and I’m genuinely impressed with the results. I’ve used other stop leak products in the past, but this one stood out for its ease of use, fast action, and trusted brand quality. The instructions are straightforward—just shake well and pour it into the cooling system when the engine is warm (but not hot). Within minutes of running the engine, I noticed the coolant level stopped dropping, and the leak around the radiator seam appeared completely sealed. What I appreciate most is that it doesn’t clog the system or create sludge, which can be a problem with lower-quality products. My heater continued to work perfectly, and the engine temperature stayed normal. It’s compatible with all types of coolant, which adds to the convenience. Overall, Liqui Moly Radiator Stop Leak is a solid, trustworthy product that can extend the life of your radiator and save you from costly repairs in a pinch. Highly recommended as a temporary solution or preventative measure. ## Frequently Bought Together - Liqui Moly Radiator Stop Leak | 250 ml | Cooler additive | SKU: 20132 - Liqui Moly Radiator Cleaner | 300 ml | Cooler additive | SKU: 2051 - Liqui Moly MoS2 Anti-Friction Engine Treatment | 300 ml | Oil additive | SKU: 2009 --- ## 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.com.cy/products/62701243-radiator-stop-leak-250-ml-cooler-additive-sku-20132](https://www.desertcart.com.cy/products/62701243-radiator-stop-leak-250-ml-cooler-additive-sku-20132) --- *Product available on Desertcart Cyprus* *Store origin: CY* *Last updated: 2026-10-29*