Liquid Copper Block Seal Stop Leak For Cars And Trucks, One Step Permanent Fix For Radiator And Intake Leaks, 18 Oz, Antifreeze Safe And No Draining Required, Works With All Cooling Systems

Liquid Copper Block Seal for Radiator Leaks, 18 oz
✔️ Permanent sealant for coolant leaks, antifreeze-safe, no draining

This one-step coolant sealant stops leaks in radiators, heater cores, intake manifolds, gaskets, and engine blocks. It’s antifreeze-safe, requires no draining, and works with all cooling system types in cars, trucks, SUVs, vans, and RVs.

✅ Seals large leaks in radiators, heads, blocks, and gaskets
✅ Antifreeze-compatible liquid glass penetrates leaks for a permanent seal
✅ One-step pour directly into radiator, no draining required
✅ Works with traditional and extended-life coolants (OAT/HOAT)
✅ Safe for plastic, aluminum, and cast iron coolant systems
✅ 18 oz bottle provides long-lasting protection for typical cooling systems

💡 What is a coolant leak sealant used for in automotive cooling systems?

This handy product stops leaks without draining the cooling loop.

- It seals leaks in radiators, heads, blocks, and gaskets - It works with most coolants including traditional and extended-life blends - It’s easy to apply: pour into the radiator, run the engine - It’s antifreeze-safe when used as directed