Prestone Head Gasket and Engine Block Repair couldn’t be easier to use. Simply pour and fix permanently.

Developed by the experts behind the number one coolant in the US for use by professional mechanics, Prestone Head Gasket and Engine Block Repair is an advanced sealer which can be used at home to fix leaks anywhere in the cooling system.

A safe and permanent repair every time.

Professional repair in minutes
Guaranteed for any car and any coolant/antifreeze
Anti corrosion formula
Protects against future leaks