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Popular Radiator Stop Leak on Amazon
Details on the Best Radiator Stop Leak
On Sale!Bestseller No. 1
K-Seal ST5501 Multi-Purpose One Step Permanent Coolant Leak Repair, 8oz, Pour and Go, Mixes with All Antifreeze, No Flushing Required
- 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
$14.99
−$1.74
More Details
Bestseller No. 2
Bar's Leaks Cooling System Radiator Stop Leak 16.9 oz.
- Bar's Leaks Liquid Aluminum Stop Leak seals radiator leaks. Seals freeze plug leaks. Repairs gasket leaks and heater core leaks. Lowers water temperature.
- Seals radiator leaks
- Seals freeze plug leaks
- Repairs gasket leaks
Bestseller No. 3
Bar's Leaks 1109 Liquid Copper Block Seal, Intake and Radiator Stop Leak, 18 oz. | One Step, Safe for All Cooling Systems
- PERMANENTLY FIXES COOLING SYSTEM LEAKS: . One step formula permanently repairs coolant loss problems on cars, trucks, vans, SUV’s and RV’s.
- ANTIFREEZE COMPATIBLE - NO DRAINING REQUIRED: Antifreeze compatible sodium silicate liquid glass penetrates large and small leaks in plastic, aluminum and cast iron heads, blocks, intake manifold & gaskets, freeze plugs, heater cores and radiators.
- ONE STEP - POUR DIRECTLY INTO RADIATOR - EASY TO USE: Fiber additives lock together with liquid to increase strength and promote a permanent seal. It will not harm the coolingsystem when used properly, no draining is required.
- USE WITH ALL TYPES OF TRADITIONAL OR EXTENDED LIFE COOLANT: Use with ALL types of traditional or extended life coolant including yellow, orange, pink, red, blue, purple and green silicate based & non-silicate based (OAT/HOAT) 50-50 mix antifreeze, and/or water.
On Sale!Bestseller No. 4
Liqui Moly Radiator Stop Leak | 250 ml | Cooler additive | SKU: 20132
- 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
- LIQUI MOLY Radiator Stop-Leak completely seals such leaks immediately with ease
$14.07
−$1.55
More Details
Bestseller No. 5
ACDelco GM Original Equipment 10-108 (12378255) Cooling System Sealing Tabs - 4 g (Pack of 5)
- Engineered for use on a variety of engine components - effective on: oil pan, ladder frame, front and rear covers, t-joints, manifold corners, intake, manifold end seals, and cam covers
- Designed for quick and easy application, assembly may be filled with oil or coolant immediately after applying sealant and torqueing the bolts
- High viscosity product that cures when exposed to air
Newest Radiator Stop Leak
New
Conklin Dike Radiator Stop Leak Sealant Coolant Additive 001339
- Seals radiator, head gasket, and cracked block leaks fast - without clogging coolant passages
- Works with all standard and permanent antifreezes (green and orange); safe for aluminum and high-performance systems
- Mix with water, add to radiator, and run engine. Safe for nearly any cooling system and won’t block narrow passages
- Use for emergency repairs or as a preventative treatment -ideal for daily drivers, heavy trucks, and race vehicles
- Can be flushed from the cooling system
New
PRETYZOOM 1Set Coolant Filling Funnel Kit Spill Radiator Bleeder Tool with Fluid Stopper for Efficient Maintenance and Leak Prevention
- Spill proof coolant filling kit--made of and safe materials, it will not be easily damaged, Radiator Funnel Kit
- Radiator filling kit--the long burp funnel prevents spills and trapped air during refills after a coolant flush,Funnel Fill Kit for Coolant
- Coolant filling kit--cost- , you can buy this set of practical products at an ,Coolant Funnel Tool
- Car repair tool--this practical cooling system fill funnel kit can prevent spills and trapped air,Radiator Funnel Kit
- Car supplies--spill proof funnel kit includes a fluid stopper, which means or air bubbles,Coolant Filling Funnel Kit
New
Visbella Radiator Stop Leak Sealer Conditioner Radiator Repair Kit Car Heater Core, Freeze Plugs, Cooling System & Radiator Repair (Tube, pcs, 24)
- Engineered by automobile and chemistry experts, this Radiator Stop Leak Sealer ensures your car's cooling system runs smoothly
- Safe for all metals, plastics, rubbers, aluminum, hoses and connections, it's the guardian your radiator needs
- Compatible with all antifreeze types, this Leak Sealer Conditioner not only stops leaks but prevents rust and lubricates the water pump
- Our Radiator Sealant offers an affordable solution to prevent and repair cooling system damage, saving you time and money
- One step formula -pour directly into radiator- permanently repairs coolant loss problems on cars, bus, trucks, vans, SUV’s and RV’s
New
AM Worldwide Radiator Stop Leak Powder No-Seep Powder for Aluminum Radiators – Heavy Duty Radiator Leak Sealant for Cooling Systems
- ► Professional-Grade Radiator Stop Leak Powder: Advanced powdered radiator stop leak formula designed for effective, long-lasting sealing of leaks in aluminum radiators and cooling systems.
- ► Powerful Leak Sealant: Quickly seals leaks in radiators, heater cores, and cooling systems, preventing costly repairs and ensuring optimal performance.
- ► High-Quality, Powdered Formula: Crafted from premium materials, this radiator sealant is specially formulated to be safe on aluminum and compatible with antifreeze and coolant systems.
- ► Heavy Duty & Reliable: This heavy-duty radiator leak stop powder withstands high pressures, providing durability and reliability for professional and personal use.
- ► Trusted Brand Quality: AM Worldwide’s professional radiator stop leak powder is engineered to meet high industry standards, trusted by mechanics for its efficacy in radiator repair and leak prevention.
New
Bar's Leaks Radiator Stop Leak, 11 oz (Pack of 2)
- The information below is per-pack only
- DISSOLVED PELLETIZED FORMULA: Bar’s Leaks Radiator Stop Leak seals internal, external and coolant-to-oil leaks. It is specially formulated to seal larger leaks better than other stop leak products.
- STOPS CURRENT AND FUTURE LEAKS: Works safely and effectively on plastic, aluminum and metal radiators, heater cores, blocks, heads, gaskets and freeze plugs.
- INHIBITS RUST AND CORROSION: Water Pump Lube lubricates water pump seal and inhibits the formation of rust and scale.
- WORKS WITH ALL TYPES AND COLORS OF ANTIFREEZE COOLANT AND / OR WATER: Compatible with both conventional silicate-based and extended life (OAT/HOAT) antifreeze, all types and colors. Can also be used in straight water.