Radiator Sealant – Coolant

Radiator Sealant

Radiator Sealant

Wynn’s Radiator Sealant is designed to protect against coolant loss by stopping most radiator, heater core, and engine block core expansion plug leaks as well as prevents head gasket seepage.

  • Stops most radiator/cooling system leaks
  • Compatible with all standard and extended life coolants

Product Number


Packaging Information

11 fl. Oz. / 24 per case
Also comes in kit #10068, #10078.


Add to coolant as needed or after radiator fluid exchange.


Add to vehicle cooling system and bring the system to operating temperature.


Safety Data Sheets

Related Products

Safely removes cooling system deposits.

The Vacuum Coolant Machine offers the ability to perform a quick, non-labor intensive cooling...

Wynn's Universal Cooling System Treatment is compatible with conventional, long-life and hybrid antifreeze/coolant hybrid...