Magnum Stop Leak Liquid is a quality stop leak radiator that efficiently seals the radiator leaks and freeze plug leaks. In addition to this, the stop leak liquid also proves beneficial to repair gasket leaks and heater core leaks. 

The presence of liquid aluminum coupled with Xtreme cool supplements the cooling process of water temperature which transforms this stop lead liquid into an effective gasket and heater leak preventer solution.

Stop Leak Liquid Heavy Duty

Fast-Acting, Permanent Seal
Seals leaks in radiators, heater cores, and cooling system components quickly and effectively.

Contains Water Pump Lubricants
Helps extend water pump life by lubricating seals and bearings during and after treatment.

Built-In Rust & Corrosion Inhibitors
Protects the entire cooling system from rust, scale, and corrosion to help prevent future leaks and wear.

No Draining or Flushing Required
Treats your system without the need for complicated procedures, tools, or mess.

Areas of Usage: Industrial and Automotive:

Ideal For:

• Emergency or preventative leak repair
• Radiator, head gasket & heater core leaks
• Protecting water pump and cooling components
• Reducing corrosion in older vehicles
• Keeping high-mileage systems sealed and lubricated

Caution:

• Carefully read the direction to use before its usage.
• In case of serious leaks, seek professional help.
• Store in a dry and cool place away from direct sunlight.