Blue Devil Head Gasket Sealer (16 oz)

Blue Devil Head Gasket Sealer (16 oz)
Item #:BLU00209
Availability:Usually ships the next business day
Our Price:$34.95
Sale Price:$32.95
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The Blue Devil Head Gasket Sealant permanently seals cooling system leaks such as blown head gaskets, warped and cracked heads, heater cores, and freeze plugs. Blue Devil is non-clogging and contains no solid or particulate matter which can be harmful to the engine. It can be used on gasoline or diesel engines and bonds to metal aluminum, cast, alloy, or plastic. The application process only takes 1 hour to install and the vehicle can be driven immediately.




  • Permanent repair for head gaskets,
    warped or cracked heads, heater cores
    or freeze plugs

  • Easy to use

  • Pour-N-Go

  • contains no solid or particulate matter
    which can be harmful to the engine

  • Non clogging to the cooling system

  • Over 90% success rate

  • Works on Northstar engines



  • What does Blue Devil Fix?
    It permanently repairs cooling system leaks such as radiators,
    heater cores and freeze plugs. It also permanently repairs most
    blown head gaskets, cracked heads, warped heads and cracked blocks.

  • My car is overheating. Will Blue Devil correct this?
    No. All cooling related problems must be solved first. Defective fan switch,
    fan clutch, clogged or restricted cores, heavy scale and sediment deposits,
    or systems jellied from antifreeze must all be properly functioning
    and capable of adequately cooling the vehicle.

  • How does it work?
    Blue Devil reacts to temperature differential created by airflow at the leak point.
    That temperature differential is the catalyst for the chemicals in Blue Devil
    to react and form its chemical weld.




1 Reviews
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By mike
blown headgasket
August 12, 2015
I have a 1991 Toyota Pick-up with 277000 miles. About 4 months ago I let the radiator over heat and blew the head gasket. The estimate was over $1400 plus I needed a new radiator.
I drove for four months with the oil pan half full of oil and half full of water unable to drive over 35 mph for about 10 miles before over heating and having to refill the radiator. A Fly fishing buddy told me about his truck with same problem I had and how "Blue Devil" fixed his truck. I did 2 treatments of Blue Devil Head Gasket repair, Changing the oil, oil filter and flushing the radiator each time because of the oily foam that had formed from the mixing of the oil and water. On the second treatment done on the nest day all I did was add the "Blue Devil" Pour and Go and now the truck runs cooler than ever. Now I'm ready to try the "Blue Devil" Oil Leak Stop. Thanks Blue Devil
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