What is Head Gasket & Engine Block Repair?

Where to buy

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

What the experts say…

Ross Kavanagh

“I would recommend this product for anyone who is looking for an easy solution to leaks etc. I found it very easy to use and effective to fix the problem.”

Ross Kavanagh, Professional Mechanic at Sean Kavanagh’s Garage


Prestone Head Gasket and Engine Block Repair provides a fast and professional solution for fixing leaks in

  • Engine blocks
  • Cylinder heads
  • Head gaskets
  • Freeze plugs
  • Water pump gaskets
  • Radiators
  • Heater cores
  • Hoses

Guaranteed to be compatible with with all makes and models of vehicle, Prestone’s Head Gasket and Engine Block Repair can be added to any colour of existing coolant or antifreeze – offering peace of mind that you’re choosing the right sealant for your car. It can treat up to 14 litres of coolant and can be used in small, medium and large cooling systems.

You don’t need to drain or flush the system first. The unique US formula fixes works through the entire cooling system to seek out and fix leaks in a matter of minutes. It also protects against corrosion and future leaks.

Importantly and unlike some competitors, it does not form into a gel and therefore has no damaging effect on the car.

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Frequently Asked Questions


Yes, you can use Prestone Head Gasket & Engine Block Repair at home. While it's mostly used by mechanics for heavy duty repairs, it is available for anyone to buy in specialist stockists like motor factors. It's safe to use at home as it mixes with all coolants and can be used on all cars, just be sure to follow the instructions carefully and consult a professional mechanic about any ongoing problems.

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Before driving, we advise you to check that the leak has been repaired by observing the level of coolant. Once the leak is repaired you can drive the vehicle and continue to monitor the coolant level regularly.

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