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More than 500,000 cars fixed! Earning our customers trust!

Satisfaction Guarantee or Your Money Back!

  • We will always give you an honest answer as to whether we can help you or not.
  • We will save you hundreds, if not thousands of dollars over conventional head gasket replacement
  • We will stand behind your purchase with the most knowledgable technical support available
  • If we cannot successfully help you get your head gasket issues resolved we will refund your money

 

Questions?

(866) 780-9042

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Thermagasket will repair the following problems:

  • Failing or completely failed head gasket
  • Warped heads
  • Cracked engine blocks and heads
  • Coolant leaks between the head and block
  • Intake manifold coolant leaks
  • Overheating due to a cracked head or block
  • Oil leaks into the cooling system (radiator)
  • Coolant leaks into the oil
  • Excessive steam and water from the tailpipe

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Testimonials

  • –Hello, just bought your product about over a week ago. had a little bit of water in the oil, and when I would start up my vehicle after its been sitting for a long period it would run real rough for about a minute (I think water in cylinder). about a year ago I purchased some head gasket repair for $30 from Kragens, I did have steam coming from the tailpipe after using product it stopped. but after about 6 months starting running rough and using alot of water and antifreeze. I just used Thermagasket and followed all the directions and WOW!! my expedition is running awsome.No rough startups and running real smooth. not using up water or antifreeze either. I am very pleased with your product and thank you. I’ve told alot of my friends about thermagasket. Thanks again for a great product.

    I’m writing to tell you how Thermagasket solved the blown head gasket problem in my wife’s \97 Ford Escort. It had steam clouds pouring from the tailpipe, and barely idled. After removing the thermostat and flushing the engine five times with clear water, I applied half of the Thermagasket contents to the radiator. Within 15 minutes of starting the engine, the steam clouds slowly abated, and the idle returned to a steady purr. That was over a year ago. No problems with the head gasket since. This stuff truly works!

    – Kevin Clarke

  • I came [to] RxAuto Head Gasket Repair and found most of the reviews were very good so we gave it a try. I bought I used [Thermagasket] cleaner & then 2 part sealer drove the vehicle at 60-70 mph on I-95 for 20 miles. now no overheating or bubbles in the cooling system! You guys saved me $1200 to $1800 in major repairs.

    – Daniel B.

  • –The head and or gasket became faulty after a trip to Wyoming. I had to park my PT Cruiser, because the water would boil everytime I stopped, but the interrior guage read still normal. Ordered some Thermagasket, and administered it following the instructions. Magic! My engine is working like new again. No boiling, no overheating, or hot at all! I now use my car to drive my son to college about an hour away on weekends, and my husband uses it to drive to work during the week, 30 miles away. The mileage is back up to normal, which is a HUGE savings. It runs quiet and smooth, and cool… I am so pleased with the way Thermagasket has worked. I have my car back, and it cost so much less than an actual repair would have. Very Affordable. Awesome Product. Thank You! I am telling all my friends!!

    – Paula H

    Colorado

  • Count me as a believer! after finding no flow thru the upper radiator hose by inserting a piece of clear hose, then gutting the thermostat which seems to be the original cause of the overheating/exhaust in the cooling system problem I used [Thermagasket] cleaner & then 2 part sealer drove the vehicle at 60-70 mph on I-95 for 20 miles. now no overheating and/or bubbles in the cooling system! You guys saved me $1200 to $1800 in major repairs. Thanks ever so much for your product & tech support assurance. hope this lasts.

    - Gene S

  • Great stuff! Worked like a charm! No trouble simply followed the instructions. I noticed an immediate difference. I had a head gasket leak then, my friend suggest me to use Thermagasket’s blown head gasket repair seal. This product corrected the problem. I installed the product over three years ago and it is still working.

    – Adam G.

  • The car would go through coolant and overheat after around 25 – 30 miles of driving before needing more coolant included. I was doubtful, yet the cost to replace the head gasket was much more than the car was worth. Hence, I had nothing to lose aside from the cost of buying this Blown Head Gasket Repair. Subsequent to following the instructions, it seems to have tackled the issue – for now. I’ve driven the car around 500 miles since treatment and it hasn’t overheated yet. To the extent I can tell, the coolant level in the reservoir hasn’t gone down at all either. For my condition, it was justified regardless of an attempt and it appears to have paid off.

    – Domnic

  • –I purchased Thermagasket for treating a blown head gasket on my 1976 36 foot Trojan boat. This boat has twin engines (Chrysler 400 big blocks). I ran Thermagasket through the block by a series of hoses to a 5 gal. bucket. I was able to circulate the product through the engine for almost 20 minutes before it got to 180 degrees. Shut the engine down and cleaned up for an hour. Started the engines and drove it at 3400 rpm for over an hour to get back to my house on the water. Ran better than it has in months. No more white smoke or serious loss of rpm. Your product really works. and not just on automobiles.

    – Martin Keller

  • –I just wanted to let you know that your product works. I was disappointed that so many companies try to sell products to the public which are allot of time a scam. I used your product because of my aluminum Cobra intake. I redid the top end of my 1990 Mustang which has a beefed up 302, 3:73 rear along with other modifications. I used your product back in August and with a high performance vehicle so far everything is good.

    Thank You,

    – Roger

  • –Kirk, I have used your product for the third time (in three different vehicles) and would like to thank you for offering something that works so well. My wife’s Honda Civic had a radiator that literally fell apart (three pieces) and the engine overheated, causing the head gasket to leak. Having successfully used Thermagasket on a Cadillac with a Northstar engine, I ordered another supply a few days ago. I used it according to directions and it worked almost instantly. In the 25 mile commute to work, it was using almost a gallon of water, but on the drive home with Thermagasket installed, it didn’t use any water at all! I checked it when it cooled down and both the overflow was three quarters full (where I had filled it) and the radiator was completely topped off! I guess I shouldn’t be surprised since it has worked every time I have used it, but never the less I was! Thanks again for making such a great product!

    – Dan M.

    Texas

  • –Awesome product – worked like a charm. Thanks!!!

    – Susanne M

    Lubbock Texas

  • I just want to leave a testimonial. I purchased Thermagasket about two weeks ago and put it in my car about four days ago. All I can say is your product is amazing. I drive 110 miles round trip to work every day and it had gotten to the point where I was literally using up 1 gallon of coolant for each round trip. I had the classic symptoms of water in the oil but I did not have the $1800 needed to have my head gasket replaced professionally nor the technical expertise to do it myself. I saw your product on line and decided for a little over $100, how could I lose. I installed the Thermagasket repair kit according to the instructions and this stuff works as advertised. I have driven nearly 400 miles since treating my cooling system and with the exception of the initial top-off after the first drive I have added no coolant to my vehicle. Thank you for one of the few products in the US that really does what it claims it can do.

    – S. A. Townes

    Boise, ID

  • –Hello Thermagasket

    You’re 2 for 2 now, for the second time my vehicle was diagnosed with a blown head gasket (The first time was with a 6.0 Ford Diesel, you told me to get the EGR Cooler checked and that it also might be under a recall warranty…right on both accounts.) This time it was my daughter’s Hyundai. 2 Shops diagnosed the overheating as a blown head gasket or worse. I called and Kirk told me he felt it could be my exhaust system or to be more precise the Catalytic Converter. Took it to the muffler shop and it was 85% plugged up, they changed it and no more overheating.

    Thanks Again

    – Theodore F

    Long Island New York

  • –I want to tell you that I fixed my 99 Olds Silhouette on Sunday that had the head gasket breach at no. 2 cylinder. It now runs fine and does not overheat, plug burns with no black hydrocarbons, exhaust is smooth, engine runs smoothly, and no water leak from radiator so I know all is fixed now. Thanks for your help help over the phone and via emails.

    – R L Snyder

    Buckeye, Az.