Pour And Go One Step Coolant Leak Repair For Radiator, Head Gasket, Freeze Plugs And More, Seals Leaks In Minutes, No Flushing Needed, Works With All Antifreeze, 8 Oz Bottle

8 oz One-Step Coolant Leak Seal for Radiator & Gaskets
✔️ Seals radiator and gasket leaks quickly, no flushing needed

The ST5501 coolant leak seal is a one-bottle, permanent repair designed to seal leaks in water-cooled engines. It’s used on cars and light trucks to stop leaks without draining or flushing the cooling system.

✅ Seals radiator, head gasket, freeze plugs, block, heater core, and water pump
✅ Works with all antifreeze types and requires no draining or flushing
✅ Treats up to 20 quarts cooling capacity per 8 oz bottle
✅ Suitable for cars and light trucks up to 12 cylinders

💡 What is a coolant leak repair sealant and when should you use it?

It’s a handy, quick fix for sealing leaks when a full repair isn’t practical.

- Seals leaks in radiator, head gasket, freeze plugs, water pump, and more
- Works with all antifreeze types and no draining required
- Treats up to 20 quarts cooling capacity per bottle
- Best for cars and light trucks up to 12 cylinders