If you own an older car, or one with at least 75,000 miles on its clock, then head gasket failure becomes increasingly likely. Thankfully there are some warning signs that all is not well in your engine, giving you the opportunity to repair before it becomes a real problem.
If you are certain that your car problem is because of damage to the head gasket – then applying a sealer is simple enough for most DIY mechanics to perform themselves. Before getting started, ask yourself this – what is the best head gasket sealer for your vehicle? Read our guide and let us recommend the best options on the market right now.
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Head Gasket Sealers Benefits
When your engine begins leaking coolant it can equal disaster for your car plus a hefty mechanical bill to fix it. When you pour a head gasket sealer into the radiator cap it flows through the coolant system and seals any leaks it finds meaning you can keep driving your car.
The key benefit to this product is its efficiency. It’s a quick fix that takes no more than an hour, an ideal solution for when you need to keep your car on the road. It’s also cheap – if you have an older car, then this solution will help you avoid expensive repair bills.
Best Head Gasket Sealer – Our Top Picks
There are lots of head gasket sealers available on the market, so you can choose the one you like. On the other side, some are better than the others. Today, we’re going to talk about eight options which really hit the target with consumers. Each one is affordable and comes from a trusted manufacturer.
1. BlueDevil
If you’re looking for the best head gasket sealer on the market – then look no further than BlueDevil, an authentic and inexpensive solution to fix a damaged head gasket without breaking the bank. BlueDevil doesn’t contain any ingredients that could potentially damage your car engine and truly gets the job done. It has a huge fanbase amongst car owners and comes from a well-trusted manufacturer.
Things to Know:
• BlueDevil creates a strong and permanent seal.
• It does more than just buy time before an expensive repair – it is a long-term fix to a potentially catastrophic problem.
• The company behind this excellent product have been in the business for decades. This is a tried and tested solution backed up by many years of happy customers.
Click Here to Check Out The BlueDevil on Amazon!
2. Bar’s Leaks HG-1
If you’ve taken your car in to a mechanic and have been hit with a hefty engine repair quote – then maybe it’s time to take a chance on the professional-grade Bar’s Leaks HG-1 sealant. Often described as a “mechanic-in-a-bottle”, this sealer promises to save you money on engine repairs while reliably fixing a leaking head gasket.
Things to Know:
• This product is not mass-produced in an unregulated market. In fact, it is manufactured right here in the USA according to the highest industry standards.
• The directions are straight-forward and easy to follow. Just add the sealer to your coolant system and let the engine sit idle for the allocated amount of time.
• But be warned! This product is like liquid gold for minor head gasket leaks, but it is less effective when the damage is very severe.
Click Here to Check Out The Bar’s Leaks HG-1 on Amazon!
3. Steel Seal 8 Cylinder
If your 8-cylinder car engine has all the symptoms of a damaged head gasket, then get your hands on some Steel Seal 8 Cylinder for easy and affordable damage control. It could easily be one of the cheapest DIY mechanical fixes of your life.
Things to Know:
• A big selling point of this head gasket sealer is its speed. The makers of this product deserve some kudos for making a head gasket fix that will have you back on the road in less than a day.
• For such a tiny bottle, Steel Seal certainly packs a punch. After treatment you will be able to drive thousands of miles without any hiccups, saving both your car and your wallet.
• However, this isn’t a fix-all miracle. As the name of the product hints, it works best for 8-cylinder cars so choose wisely.
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4. K-Seal HD
If you’re facing a large bill from a mechanic – then it may be time to embrace the K-Seal HD. This impressive sealer takes just a few minutes to work and is an excellent long-term solution for many car leak problems.
Things to Know:
• Application couldn’t be easier. There’s no need for draining and flushing – just shake, pour, and wait for the magic to happen.
• Unlike other similar products, it is safe when mixed with antifreeze.
• It can be used both on old and new car models without any change in effectiveness, making it one the of the best head gasket sealers available on the market.
• Although K-Seal HD works well in most scenarios – it is less successful in an over-pressurized system where the product may struggle to reach the problem area.
Click Here to Check Out The K-Seal HD on Amazon!
5. K&W Permanent Repair
This sealer has been developed with innovative nanotechnology to deliver an incredibly strong seal when compared to other similar sealers. Although a little pricier, K&W Permanent Repair guarantees long-lasting and permanent results.
Things to Know:
• This product is so effective that its use isn’t limited to private vehicles – it is a popular solution to head gasket leaks in larger vehicles including buses and trucks.
• As the name suggests, this product is a permanent solution to gasket leaks, so will save you money in the long run.
• Application is a little more complicated – you need to drain the system and flush and remove antifreeze before using the product.
Click Here to Check Out The K&W Permanent Repair on Amazon!
6. ATP AT-205
Our sixth choice on our list of the best head gasket sealers. ATP AT-205 is formulated to fix minor leaks without the need to invest hundreds of dollars in expensive trips to the repair shop. You don’t need any special skills to stop leaks and rejuvenate your old gaskets – just pour in the product and wait for it to locate and seal any leaks.
Things to Know:
• It’s a fast-acting and non-toxic product which seals leaks in as little as five hours.
• This sealer is free from petroleum distillates, so any old seals won’t be compromised by over-swelling or breakdown.
• ATP AT-205 is compatible with all engine fluids, so there is no need to drain or prepare your engine before use.
• The downside to this excellent sealer is that it only works on minor leaks. If your head gasket is completely torn then this isn’t the product for you – sooner or later you will have to replace the gaskets altogether.
Click Here to Check Out The ATP AT-205 on Amazon!
7. Bar’s Leaks 1111
The Bar’s Leaks 1111 is a godsend product for anyone struggling with a fatigued or damaged head gasket. It can safely seal any gasket leaks while saving your time, money, and the fuss of arranging repair shop visits.
Things to Know:
• It’s not just the DIY mechanics – this excellent product is used by thousands of repair shops across the world as a cost-effective solution to repair blown head gaskets.
• It’s safe to use and the results are permanent.
Unlike other inferior products, it contains no particles that can damage your vehicle’s engine during treatment.
• One thing to consider before choosing Bar’s Leaks 1111 is that it will only work if you are able to drive your vehicle for at least fifteen minutes at a stretch without the vehicle getting overheated.
Click Here to Check Out The Bar’s Leaks 1111 on Amazon!
8. K&W FiberLock
We’re ending our list with another great product – the K&W FiberLock. This multipurpose sealer can be used to treat a variety of car problems such coolant leaks, head gasket leaks, freeze plugs, issues with cylinder heads, and engine blocks. This product is so effective you can see it as a professional mechanic in a bottle – giving you the same results as a trip to the repair shop but saving you on time and money in the process.
Things to Know:
• K&W FiberLock is safe to use alongside plain water and all types of antifreeze.
The directions are easy to follow and are appropriate even if you’re not particularly savvy when it comes to car maintenance.
The product works amazingly fast and is affordable to most amateur mechanics.
Laboratory testing shows that K;W FiberLock is able to fix large leaks with less fluid when compared to the competition.
It can fix radiator leaks plus many other leak-related problems in your engine.
You can be back on the road within an hour of applying this head gasket sealer – great for those of us with a busy lifestyle who haven’t got time for mechanical problems.
Click Here to Check Out The K&W FiberLock on Amazon!
Best Head Gasket Sealer – Our Ratings
| PRODUCT | RATING |
|---|---|
| BlueDevil | 5.0 / 5 |
| Bar's Leaks HG-1 | 4.5 / 5 |
| Steel Seal | 4.5 / 5 |
| K-Seal HD | 4.5 / 5 |
| K&W Permanent | 4.5 / 5 |
| ATP AT-205 | 4.0 / 5 |
| Bar’s Leaks 1111 | 4.0 / 5 |
| K&W FiberLock | 4.0 / 5 |