After completing our extensive tests, the Bar’s Leak HG-1 Head Gasket Repair stands out – this is the best head gasket sealer which can easily fix core plugs as well as freeze leaks. It easily stops any radiator leak and heater core leak. The cylinder blocks and heads that are cracked can be easily sealed and the leaks of the gasket intake and the blow head can be repaired without much hassle.
Our step-up pick is the BlueDevil 32oz Head Gasket Sealer and it can give permanent seal to the radiator that is leaking. It is used for gasket blow head repair and sealing in which the radiators that are leaking can be easily sealed with this head gasket sealer. It also works on heater cores that are leaking. The heads that are warped and cracked can benefit from this sealant. It also comes with a flush (32 oz) and the head gasket sealer itself (32 oz).
The budget pick is the Bar’s Leaks 1100 Head Gasket Repair and with this, you can easily repair head gaskets that are blown. It also works to repair cylinder heads that are cracked as well as a sealant for blocks and in addition, it keeps your block leaks repaired and stopped.
A Little Background
Head gaskets are the part of the vehicle that sits between the cylinder heads and the engine block. They are most likely made from copper, steel or sometimes composite material. Gone are the gaskets that are made from asbestos and graphite because of its health issues in terms of making an environment friendly vehicle. Head gaskets are a vital part when it comes to the combustion process of any vehicle and it acts as the motor oil and coolant’s gateway to keep the separation of chambers so that they do not mix and only serve their own purpose.
Head gasket sealers are all over the place, on every repair shop or store and are there to keep you from spending too much on repairs for your head gasket. Surely, we all know that head gaskets are very expensive to replace and this is why most people will just go for the cheaper option – to use a head gasket sealer to fix their engine and keep it from overheating and resulting in a vehicular malfunction.
Today, head gasket sealers are readily available in most car shops if you just look around. They are a must-have if you are looking forward to self repairing your car or vehicle if its gasket has been blown away or damaged. It will save you a lot on your budget if you intend to just use a head gasket sealer for fixing your gasket if it can still be repaired instead of going for an expensive replacement of the head gasket.
How We Picked
When we picked the best head gasket sealer out there, we took into consideration the following criteria for choosing the best of the best:
What is the price of the head gasket sealer? The price of the head gasket sealer must be highly considered although the price is not as hefty and as expensive as you think, but it all depends. Most head gasket sealers are usually on the average spending bracket and furthermore, they will definitely cost you less in dollars or any other currency when it comes to maintenance and repair of any head gasket, in place of putting up with an expensive replacement.
Does the head gasket sealer have equal pros and cons and do the disadvantages outweigh the advantages or not? Read most of its pros and cons and see if your car or vehicle model, make and type have been reported there and see the results. You should also consider if the head gasket sealer has been applied properly when it comes to usage of the reviewers, as some have only made wrong steps when it comes to getting the head gasket sealer to work in its repair.
Is it compatible to most types of vehicles as a head gasket sealer? Most of time, a head gasket sealer will help out any kind of vehicle such as cars, trucks, SUVs and other four wheeled vehicles. In some rare cases, they might even work for bikes as well as airplanes and other engine types so make sure you read the info on each head gasket sealer carefully.
Can this head gasket sealer be used on a lot of engine types? For instance, most head gasket sealers are known to be highly compatible with v6 engines and 4 cylinder engines, so make sure you know what head gasket sealer to buy before complaining in the comments section.
Is the head gasket sealer compatible with antifreeze products? After applying the head gasket sealer, you should apply the antifreeze so the head gasket sealer should be compatible with antifreeze so that it will be very effective for your vehicle in general.
How long will you have to wait after the head gasket sealer heals and works so you can operate and drive your vehicle? Most head gasket sealer formulas will take about 1 hour or so, but it roughly depends on how much you pour in and how big your vehicle’s radiator capacity is.
How easy is it to apply the head gasket sealer to your radiator? Some head gasket sealer formulas are usually a one-step application in which you just shake and pour it in the radiator and add antifreeze afterwards. The head gasket sealer should be super easy to use.
How long can the head gasket sealer’s repair last on the average? Most repairs will definitely last long, depending on the damage that has been done to the head gasket. However, most of the time, a head gasket sealer is just a temporary fix if you are a heavy vehicle user and the head gasket has been severely damaged. The last resort will definitely be the expensive replacement of the head gasket – unless you go and sell the car to a junk shop or whatever.
Does it require you to flush the radiator before applying the head gasket sealer or not? In some cases, a head gasket sealer formula will not require you to flush the coolants that are in the radiator before applying the head gasket sealer.
Top Pick: Bar’s Leak HG-1 Head Gasket Repair
For our best head gasket sealer, the Bar’s Leak HG-1 Head Gasket Repair is our chosen candidate. With this sealer, the leaks of the gasket intake and the blow head can be repaired without much hassle. Furthermore, it can easily fix core plugs as well as the freeze leaks and also, the cylinder blocks and heads that are cracked can be easily sealed.
Adding to that, this sealer easily stops any radiator leak and heater core leak and is perfect for blown head repair of gaskets. It takes for a very long time for any vehicle before overheating and the amount of time is about 15 minutes and additionally, it is also antifreeze compatible.
The Bar’s Leak Gasket Repair does not require flushing, making it totally hassle-free as a head gasket sealer. In addition, the total time for installation and down time is about 45 minutes and it is also very okay to add for just about any engine, as long as the engine supports anti-freeze mixtures.
Do know that one bottle of this head gasket sealer can treat up to 2 and half gallons for any engine and for a 4 cylinder motor, you need half a bottle. The HG-1 Head Gasket Repair can work as long as you leave the head gasket sealer in and it also generally lasts significantly longer than most sealers.
Being an alternative to repairing a leaking coolant where you have to replace the radiator, head gasket and / or cylinder head, the HG-1 Repair for gasket heads is a very ideal solution to hold on to. The leaks are permanently sealed with this repair sealant as this head gasket sealer weighs 2.5 lbs.
Flaws but Not Dealbrakers
The only known unpleasant report about this head gasket sealer is that it does not work on a water pump steal that is leaking in which you just have to replace it.
BlueDevil 32oz Head Gasket Sealer
The BlueDevil 32oz Head Gasket Sealer is our step-up pick when it comes to head gasket sealers. With this, heads that are warped and cracked can benefit from this sealant and in addition, it can give permanent seal to the radiator that is leaking.
This head gasket sealer comes with a flush (32 oz) and the head gasket sealer itself (32 oz) and additionally, it is greatly used for gasket blow head repair and sealing. Furthermore, one more thing to add about this head gasket sealer is that it also works on heater cores that are leaking.
With the BlueDevil 32oz, all radiators that are leaking can be easily sealed with this head gasket sealer as it can easily be used for SUVs, vans, cars, trucks and can work for either diesel engines or gasoline engines. It has been laboratory tested such that this head gasket sealer is a permanent sealant in which particles are not relied on.
All in all, the BlueDevil Gasket Sealer is definitely very safe to use and easy to apply for the said kinds of vehicles and it also does not have particulate, solid or other matter that may be disturbing the quality of the head gasket sealer. It works well for leaking radiators, freeze plugs, cracked heads, heater cores, blown head gaskets and others.
A great feature of this head gasket sealer is that it does not clog and therefore keeps your engine safe from harm and also, the thermostat can be replaced after the repairs. It is ideal for bonding various types of material such as alloy, aluminum, plastic, cast or metal. It weighs 5.5 lbs and is under a 90 days warranty.
Bar’s Leaks 1100 Head Gasket Repair
The Bar’s Leaks 1100 Head Gasket Repair keeps your block leaks repaired and stopped and is our budget pick as a great head gasket sealer. Additionally, it also works to repair cylinder heads that are cracked as well as a sealant for blocks.
With the 1100 Head Gasket sealer, you can easily repair head gaskets that are blown as this is a permanent repair for head gasket. With this head gasket sealer, it can keep the vehicle from overheating for up to 15 minutes. Adding to that, with this Head Gasket Repair formula, it requires two flushes.
Adding to that, installation is a breeze but quite a bit daunting depending on your use because the total installation time and down time is about 1 day or 24 hours. On the other hand, this repair liquid is an epoxy based chemical that works as a head gasket sealer. The Bar’s Leaks Repair head gasket sealer sells at an extremely and very low price and it contains 20 oz of head gasket sealant and it weighs 1.5 lbs overall.
Best Head Gasket Sealer for DIY Repairs
BlueDevil Pour-N-Go Head Gasket Sealer
If you want your DIY or do it yourself repairs to get done then you would want the BlueDevil Pour-N-Go Head Gasket Sealer for your radiator and blown head gasket. It has a very easy and convenient to use and apply pour and go formula that is great for do it yourself activities and tops it off with ease of use and hassle-free repair.
Additionally, you get total performance as gasket heads that are leaking, blown or cracked can be permanently sealed and furthermore, it is good to know that it works ideally for v6 engines as well as 4 cylinder engines.
The BlueDevil Pour-N-Go Sealer weighs 1 lb and with this head gasket sealer, you can drive your vehicle right after 2 hours of pouring this head gasket sealer. Adding to that fact, it is imperative that you should follow the directions when repairing external leaks. For those who are wondering, it does not require a radiator flush. Overall, it is a great solution that is economical if you cannot provide a head gasket replacement that is hassle-free.
Best One Step Application Best Head Gasket Sealer
Bar’s Leaks 1111 Head Gasket Fix
If you are quite tired of hassle and repair when it comes to using a head gasket sealer then you would want to stick to a one-step only method of a head gasket sealer – the Bar’s Leaks 1111 Head Gasket Fix is your best bet. This sealer easily blocks leaks and fixes blocks as well as cylinder heads that have been cracked and it contains 24 oz of head gasket sealant.
With this head gasket sealer, anyone can easily repair head gaskets that have been blown or damaged as this is a one step formula that is easy to use.
With the Bar’s 1111 Gasket Fix, you can just easily and conveniently pour it in the radiator and also, there is no requirement for draining. All in all, this head gasket sealer is great and easy to use and this is a permanent solution for head gasket repair and sealing. It only weighs 2 lbs and additionally, the vehicle can last up to 20 minutes without overheating.
It is also compatible with antifreeze so you have less worry with putting up with antifreeze compatibility. This head gasket sealer does not require flushing. With this 1111 Head Fix Gasket, the installation time and down time is about 15 minutes only. Do know that if you intend to use it after copper stuff did not work completely; you can flush the cooling system and then turn off the engine to set things up. It is ideal and works for v6 engines and as a whole, this is an incredibly cheap fix for your vehicle.
Ideal Ceramic Formula Head Gasket Sealer
K-Seal Ultimate Head Gasket Block Repair
The K-Seal Ultimate Head Gasket Block Repair, priced at £27.84, is the ideal gasket sealer that comes in a ceramic formula. This sealer is very simple to use.
With this sealer, all you need to do is shake it and pour it in and you are good to go. The K-Seal Ultimate Repair for head gaskets also protects you from rust, corrosion and other external factors. Do know that there is a money back guarantee for this product and in addition, it also comes with freeze proof material for your safety and convenience.
All in all, this head gasket sealer easily seal cracked heads and porous and cracked blocks and is a total permanent head gasket repair solution. One more thing that is important to know about this head gasket sealer is the fact that it meets the US standard ASTM D3147.
This sealer is highly applicable for all types of light trucks, cars and SUVs with just one bottle and it is also highly trusted ceramic formula in the UK. All in all, the K-Seal Ultimate Repair is very safe to use with all types of engines that are water cooled and you do not need to remove its thermostat as this goes directly to the expansion tank.
Ideal Head Gasket Sealer for All Surfaces
K&W FiberLock Head Gasket Block Repair
The K&W FiberLock Head Gasket Block Repair contains 32 fluid ounces of head gasket sealant and is a highly recommended gasket sealer for all types of surfaces. Do know that it can cover most types of surfaces including plastics, painted surfaces and metal parts.
Additionally, this sealer can work for buses, trucks, cars and other vehicle types. Furthermore, it easily fixes and seals cylinder heads, heater cores, coolant leaks, freeze plugs, intake gaskets, head gaskets and engine blocks. Also good to know about this sealer is that it uses nanotechnology with military grade fibers that gives off a permanent repair.
One more thing you need to know about the K&W FiberLock is that it uses a pour in formula that is easy to use and apply. It also comes with a double money-back guarantee and comes with cool-x conditioner feature. The K&W Gasket Block Repair weighs 2.4 lbs and highly works with almost any type of antifreeze. In addition, it can easily fix radiator leaks and conveniently, you can drive after about 1 hour from pouring in the repair head gasket sealer.
Head Gasket Sealer that can also be Used with Freeze Plugs
BlueDevil Head Gasket Sealer 38386 32oz
If you want a head gasket sealer that gives permanent repair for any head gasket then you would want the BlueDevil Head Gasket Sealer 38386 32oz which can be used with freeze plugs and other components as well that need repair in your vehicular cooling system and engine.
This has 32 oz of gasket sealant and is a great alternative for repairs that can be of too much hassle and time consuming. Additionally, it does not contain residue or solid matter that might harm the engine of the vehicle you are working on and is very safe to use and easy to apply.
The BlueDevil 38386 32oz sealer is ideal for cracked heads, blown head gaskets, leaking freeze plugs and leaking heater plugs and is proudly made in the USA. There is no need to remove the thermostat with this gasket sealer and additionally, you can drive the vehicle right away after use and repair. With this sealer for head gaskets, it is a great saver for a lot of vehicle types and your money. All in all, at two pounds of weight, this head gasket sealer is well worth for your budget.
Head Gasket Sealer that uses Nanotechnology
CRC 401232 Permanent Head Gasket Repair
You can make easy repairs for the head gasket using nanotechnology with the CRC 401232 Permanent Head Gasket Repair as the surface area application allows it to permanently harden. Adding to that feature, it is also highly recommended and ideal for buses, trucks and other automobiles. It can easily fill up crevices and cracks and complete it for a stronger bond.
It contains 32 fluid ounces of permanent head gasket sealer and weighs 2.5 lbs as it also complies with ISO 9001: 2000. It is applicable for engine blocks, heater cores, cylinder heads, radiators, cooling systems and freeze plugs and comes with a guarantee for double money back. It is great for DIY or do it yourself repair. With a high quality sealing and repair capability, all you need to do is to drain the system, flush and remove the antifreeze before you use the head gasket sealer. It easily repairs overheating and rough running when you are starting the vehicle.
Ideal Head Gasket Sealer that sits like Steel
Steel Seal SS Head Gasket Repair
With a price of £29.99, the Steel Seal SS Head Gasket Repair is a steel solid head gasket sealer in which the formula has been improved from its previous version. With this, you can easily drive your car or vehicle after about an hour or so and the solution is a pour in formula that is very easy to apply for any vehicle type. It has a 99.5 percent of success rate and comes with a money back guarantee.
It is applicable for engine blocks that are cracked and great for use on warped heads and blown head gaskets for sealing them permanently. You can save a lot of money from head gasket repair with this sealer. It is ideal for use in vans, cars, pickups, Lorries, 4×4 vehicles, tractors, and even bikes and some airplanes and one bottle is needed for engines with a capacity of 2 liters, 3 bottles are required for engines with 4 liters of capacity and above and 2 bottles are needed for 2 to 4 liter capacity engines.
With the Steel Seal, you can even refund up to 3 bottles and in addition, it can also repair any coolant system.
Head gasket sealers that did not make it to our product list are mostly not very effective when it comes to sealing head gaskets and making repairs for other parts of the cooling system. However, some are just because of the misuse of the users.
Other Frequently Asked Questions
Q: What does a head gasket do and how important is it for every vehicle with a cooling system?
A: According to Auto Butler, they are very important for separating oil, water, exhaust gases and fuel so that they do not mix and interfere with the systems of another and can cause malfunction within the vehicle. Additionally, it seals in between the cylinder head and the block of the engine and its job is to keep the liquid parts of your car from leaking. Without the head gasket, your car or vehicle will not function as properly as possible.
Q: What are the causes of a blown head gasket?
A: According to Ebay, the design flaws that can give stress and thermal problems, especially for newer models of vehicles and also, the improper installation may also give a blown head gasket problem, especially with the sealers and bolts. Also, the timing of the ignition and the cooling system’s failure and inadequacy can be a factor as well. Adding to that, a blown head gasket can result in overheating if the liquid has been lost. Additionally, the fuel could mix with oil or the coolant and might produce white smoke and can damage the converter or even produce a blue smoke. Most often, blown head gaskets are a very serious and important matter and this is why they need to be repaired or replaced as soon as possible. All in all, they can be highly expensive if you intend to replace them and this is why more and more people refer to head gasket sealers.
Q: What are the symptoms of a blown head gasket?
A: According to Auto Repair Key, a high temperature of the engine in which the dashboard’s thermostat reaches very high on the warning scale. Do know that the levels of the coolant will be very low if the head gasket is damaged. Your vehicle will not run as smooth as it used to be if there is damage in the head gasket and that oil can be discolored and this is a sign that your coolant has been mixed with the engine’s motor oil. If your exhaust pipe releases a light colored smoke, that might mean the head gasket had leaked the coolant into the combustion chamber
Q: Any tips on repairing a blown head gasket?
A: According to the official site of BlueDevil Products , you should follow directions on the bottle of the head gasket sealer and start the engine with the radiator cap off. Do keep the heat of the engine on high and wait for about a minute and then pour in the solution to your radiator and replace with the cap. Just let it sit for about 50 minutes while keeping the temperature within the ideal normal range and after that, you can top it off with water and antifreeze.
Wrapping It Up
All in all, the Bar’s Leak HG-1 Head Gasket Repair is our best head gasket sealer to keep your coolant system and engine up and running without the risk of high repairs that are too expensive for your budget.