--- product_id: 21360469 title: "ATOMEX Stop Leak Radiator Coolant Additive - Repair Seal, Restore Radiator Fluid Fix and Prevent Future Leaks (Bottle, 250 ml)" brand: "xado" price: "$51.84" currency: USD in_stock: true category: "Xado" url: https://www.desertcart.us/products/21360469-atomex-stop-leak-radiator-coolant-additive-repair-seal-restore-radiator store_origin: US region: United States of America --- # Gasoline & diesel compatible 250 ml powerful sealant Protects against rust & corrosion ATOMEX Stop Leak Radiator Coolant Additive - Repair Seal, Restore Radiator Fluid Fix and Prevent Future Leaks (Bottle, 250 ml) **Brand:** xado **Price:** $51.84 **Availability:** ✅ In Stock ## Summary > 🛠️ Seal the deal, stop the leak, and drive worry-free! ## Quick Answers - **What is this?** ATOMEX Stop Leak Radiator Coolant Additive - Repair Seal, Restore Radiator Fluid Fix and Prevent Future Leaks (Bottle, 250 ml) by xado - **How much does it cost?** $51.84 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/21360469-atomex-stop-leak-radiator-coolant-additive-repair-seal-restore-radiator) ## Best For - xado enthusiasts ## Why This Product - Trusted xado brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Long-Lasting Shield:** Prevents rust and corrosion, extending your radiator’s lifespan and reliability. - • **Leak-Proof Confidence:** Permanently seals radiator cracks and leaks for uninterrupted engine performance. - • **Universal Engine Ally:** Works seamlessly with gasoline and diesel engines, plus all cooling system materials. - • **Cost-Smart Maintenance:** Avoid expensive repairs with an affordable, easy-to-apply additive. - • **Quick & Simple Application:** Just add to a warm engine and let it work—no mechanic needed, no downtime wasted. ## Overview ATOMEX Stop Leak Radiator Coolant Additive is a versatile 250 ml formula designed to permanently seal radiator leaks and cracks in both gasoline and diesel engines. Compatible with all cooling system materials, it prevents rust and corrosion while restoring optimal engine cooling performance. Easy to apply and cost-effective, it’s the essential maintenance upgrade for professionals who demand reliability and longevity from their vehicles. ## Description XADO ATOMEX Stop Leak Radiator Coolant Additive. This radiator stop leak additive not only completely eliminates leaks but also reliably and permanently seals cracks and minor damages in pipelines and joints. Say goodbye to the loose fit of cylinder block gaskets with this ultimate engine sealer. Our radiator sealant is perfect for both gasoline and diesel engines, making it an essential addition to your car's maintenance kit. Whether you drive a personal vehicle or manage heavy-duty equipment, this coolant additive ensures your engine runs smoothly and efficiently. It is neutral to all materials in the cooling system, including gaskets, rubber hoses, aluminum, plastic, and steel radiators. Additionally, it provides long-term protection against rust and corrosion, extending the lifespan of your cooling system. Application is straightforward and user-friendly. Warm up the engine to working temperature, ensuring it is warm but not hot. Shake the can thoroughly and introduce the product into the radiator tank while the engine is off. Start the engine and let it idle for 5-10 minutes with the compartment heater turned on. To prevent future leaks, use this radiator stop leak right after changing the coolant. For optimal results, use one bottle (250 ml) for every 10-12 liters of antifreeze. This product serves as a radiator sealer, coolant flush, and engine cleaner all in one, making it a versatile and valuable tool in your vehicle maintenance arsenal. It’s the perfect fix for minor leaks and a robust treatment for maintaining the integrity of your engine’s cooling system. ATOMEX also functions as a friction modifier and pipe sealant, ensuring a tight seal and preventing future leaks. It's compatible with various engine types, including those with aluminum, copper, or cast iron components, and works well with both organic and traditional coolants. Order now and get this ATOMEX Restore Radiator Fluid Fix and Prevent Future Leaks by XADO delivered to you! ## Features - Affordable Fix: Our affordable fix eliminates the need for costly radiator repairs. Stop leaks and keep your car's engine running smoothly with our radiator sealant additive. - Versatile Compatibility: Versatile compatibility for gasoline and diesel engines in automobiles and other equipment. Our additive stops leaks, seals radiators, and ensures smooth engine performance. - Parts Safe: Ensure parts safety. Our additive is compatible with gaskets, rubber hoses, aluminum, plastic, and steel radiators. Stop leaks and safeguard your cooling system with confidence. - Lasting Protection: Long-term protection for your cooling system. Our radiator coolant additive prevents rust and corrosion, ensuring your engine runs smoothly. Perfect for stopping leaks and sealing your car's system. - Peak Performance: This best sealant stops leaks in radiators, coolant, and antifreeze systems, ensuring a permanent fix. Ideal for emergency repairs. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B00KFKQ8JW | | Best Sellers Rank | #447,580 in Automotive ( See Top 100 in Automotive ) #74 in Cooling System Additives | | Brand | XADO | | Customer Reviews | 3.8 3.8 out of 5 stars (57) | | Date First Available | May 19, 2014 | | Is Discontinued By Manufacturer | No | | Item Weight | 11.9 ounces | | Item model number | XA 40913 | | Manufacturer | XADO Chemical Group | | Manufacturer Part Number | XA 40913 | | Package Dimensions | 7.24 x 5.08 x 2.52 inches | ## Images ![ATOMEX Stop Leak Radiator Coolant Additive - Repair Seal, Restore Radiator Fluid Fix and Prevent Future Leaks (Bottle, 250 ml) - Image 1](https://m.media-amazon.com/images/I/71y8oxChkcL.jpg) ## Questions & Answers **Q: whats the best radiayor sealer, for a 250 size motorcycle** A: I USED THIS FOR MY PONTIAC TRANSAM WS6 , IT SHOULD WORK BUT ASK A EXPERT OPINION FROM YOUR MECHANIC I LEARN THE HARD WAY EASY FIX COST A LOT IN THE END. ATOMEX STOP LEAK IS EXCELLENT IT FIXED MY RADIATOR PROBLEM HOPE THIS HELP ## Frequently Bought Together - XADO ATOMEX Stop Leak Radiator Coolant Additive - Repair Seal, Restore Radiator Fluid Fix and Prevent Future Leaks (Bottle, 250 ml) - XADO ATOMEX Oil Additive Stop Leak Engine - Restore Seal and Gaskets, Treatment for Car Engine High Mileage or Rear Main Seal, Best Stopper Leaks Reseal (Bottle, 250 ml) - XADO Engine Oil System Cleaner with Anti-Carbon Effect - Removes Contamination & Engine Sludge - ATOMEX Total Flush Revitalizant (Bottle, 250ml) --- ## 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.us/products/21360469-atomex-stop-leak-radiator-coolant-additive-repair-seal-restore-radiator](https://www.desertcart.us/products/21360469-atomex-stop-leak-radiator-coolant-additive-repair-seal-restore-radiator) --- *Product available on Desertcart United States of America* *Store origin: US* *Last updated: 2026-07-05*