Radiator Stop Leak Seal Tablets

Seal minor coolant leaks in radiators, heater cores, and hoses without draining the system. These concentrated seal tablets dissolve in your cooling system and migrate to the source of a leak — forming a permanent seal on small cracks and pinholes and stopping the slow drip that leads to overheating.

• Seals minor radiator and heater core leaks
• Safe for all metals, rubber, and plastics in cooling system
• Dissolves directly in coolant — no draining required
• Permanent seal on pinhole and hairline cracks
• Pack of 4 tablets