10 Best Radiator Stop Leaks 2024 in the US

1.

Quick Leak Sealing: Seals leaks in minutes for radiators, gaskets, and more.

2.

One-Step Formula: Seeks and seals holes and cracks without engine impact.

3.

Easy Application: No draining needed; just shake, pour, and go.

4.

Wide Compatibility: Works with all antifreeze types and up to 12-cylinder engines.

5.

Professional-Grade: Trusted by mechanics, verified by university testing.

1.

Seals radiator leaks: Effectively seals leaks in the radiator.

2.

Repairs gasket leaks: Repairs leaks in gaskets to prevent fluid loss.

3.

Seals freeze plug leaks: Seals leaks in freeze plugs to prevent engine damage.

4.

Repairs heater core leaks: Fixes leaks in the heater core to maintain heating efficiency.

5.

Lowers water temperature: Helps reduce the water temperature in the cooling system.

1.

Quick Leak Sealing: Seals leaks in minutes for radiators, gaskets, and more.

2.

Permanent Repair: Permanently seals holes and cracks without efficiency loss.

3.

Easy Application: No draining needed; just shake, pour, and go.

4.

Heavy Duty Use: Suitable for large engines in commercial and agricultural vehicles.

5.

Professional-Grade: Non-corrosive, durable, and trusted by mechanics worldwide.

1.

Permanent Leak Repair: Fixes cooling system leaks permanently in one step.

2.

Antifreeze Compatible: Works with antifreeze without needing to drain the system.

3.

Easy Application: Pour directly into radiator; no draining required.

4.

Versatile Coolant Use: Compatible with all traditional and extended life coolants.

5.

Strength-Enhancing Additives: Fiber additives enhance seal strength for durability.

1.

Package Quantity: Sold as a package of (6) 8 oz. bottles & display case.

2.

Permanent Repair: Permanent coolant leak repair - just shake, pour and go.

3.

Compatibility: Mixes with all antifreeze. No draining or flushing required.

4.

Versatile Fix: Fixes cracks and leaks in various engine components.

5.

Multi-Use: Works as radiator stop leak, head gasket stop leak & engine stop leak.

1.

Immediate Leak Sealing: Seals radiator leaks instantly and effortlessly.

2.

Combustion Chamber Protection: Prevents damage from coolant entering the chamber.

3.

Universal Compatibility: Suitable for all cooling and heating systems.

1.

Leak Stopper: Stops leaks safely, quickly and easily

2.

Compatibility: Compatible with all antifreeze and coolants

3.

Safe for Materials: Safe for all metal, plastic, and rubber cooling system parts

4.

Lubrication: Lubricates water pump

5.

Guaranteed Effectiveness: Guaranteed to work

1.

Professional Strength Formula: Inhibits rust and scale, neutralizes pH, controls electrolysis, lubricates and seals leaks.

2.

OEM Used and Approved: Same tablets used by many OEM auto and truck manufacturers globally.

3.

Seals Leaks and Seepage: Provides continued protection; repeat application every 15,000 miles or annually.

4.

Compatible with All Antifreeze Types: Works with all types and colors of antifreeze coolant, including waterless and straight water.

1.

Quick Leak Repair: Stops leaks in radiators in seconds.

2.

Compatibility: Works with all standard and permanent antifreezes.

3.

Engine Protection: Prevents antifreeze and water from seeping into the engine.

4.

Safe for Cooling Systems: Will not block small passages in the cooling system.

5.

Emergency Use: Ideal for on-the-spot repairs or as a preventative measure.