Thermagasket Defender

Thermagasket Defender

$49.95 Sale Save

Only 0 left in stock

Thermagasket Defender is to be used for preventative maintenance in high mileage cars. It is estimated that most cars with over 50,000 miles have some degree of a blown head gasket. Most slight head gasket leaks go undetected for many years, but definitely cause a reduction of gas mileage and performance.

Thermagasket Defender should be run through the cooling system every 30,000 miles.


Signs of a minor blown head gasket:

  • Steam from the exhaust once engine is warm

  • Coolant loss

  • Lukewarm heat or no heat from heater

  • Decrease in Gas Mileage

  • Sweet smell from exhaust

Fluctuations in engine temperature while driving. Thermagasket Defender can also be used as an extra layer of protection against Head Gasket failure on engine break in after head gasket replacement. Head Gasket failure within the first 1000 miles after a Head Gasket replacement is a common problem that can be prevented.

Reasons for failure:
    • Faulty Head Gasket

    • Heads were not surfaced correctly

    • Gasket pinched during installation

    • Wrong torque specs or sequence

    • Reuse of head bolts

    • Cooling system not bled correctly  


Thermagasket defender will seal any imperfections in the seal of the head to the block.

This content type will accept rich text to help with adding styles and links to additional pages or content. Use this to add supplementary information to help your buyers.

You can use product metafields to assign content to this tab that is unique to an individual product. Use tabs to highlight unique features, sizing information, or other sales information.