10 Best Spark Plug Gap Tool 2024 | Compared & Expert’s Guide
An excellent spark plug gap tool allows you to adjust the gap between your spark plugs, which ensures that your car engine is operating smoothly.
But, choosing the best spark plug gap tool is quite challenging, given that all those cheap products are available out there.
If you are a DIY enthusiast or a professional, this tool helps you to create the perfect spark plug gap to make your day even shiner. We know we always want nothing but the best product for us.
But, it is tough to differentiate wrong from the good. That is why we are here today with this exclusive review and buyer guide for the spark plug gap tool.
With our expert team’s thorough analysis of the customer reviews, this buyer guide will help you to choose the best product for you.
So, without any further ado, let’s begin.
Best Spark Plug Gap Tool: Features You Should Look For
Always remember, the excellent quality spark plug gap tool is capable of gap your spark plugs carefully. So, you should choose the machine with the utmost care. There are a few things that you should consider before buying a spark plug gap tool.
We are here to tell you about those factors and something that you should look at when it comes to buying a spark plug gap tool.
Materials of the Spark Plug:
First of all, you should look for the contents of the spark plug. You’ll find different types of spark plugs out there. You should consider the contents of the spark plug to choose the perfect gap tool. Let’s explain them further.
1. Copper and Nickel Spark Plug:
This kind of socket is cheap and commonly used by many users. But it will not last for a long time. The outer texture of this plug is made with copper, and nickel mixture is the main element of the inner surface.
2. Platinum Spark Plug:
You can easily understand from the name, right? Yes, the platinum coating is used here. Although there are many benefits of using platinum, the actual advantage lies in their durability.
You can use this kind of platinum spark plug for a long time. Your product structure will not fade away quickly just because of the magical feature of the platinum.
3. Iridium Spark Plug:
First thing to consider here, despite being a hard material, the iridium can break easily. So, the wise decision here will be avoiding the circular-shaped style. In this case, a wire-loop style spark plug tool will make your day shiner.
4.Silver Spark Plug:
We all know that the conductivity of the electricity of silver is so much high. You have to keep it in mind before buying a silver spark plug.
Brand
Agree or disagree, the brand is always essential. If you want to buy the right quality product, go for a good brand. You can check for the products we have reviewed here. All of the products are from good and reputed brands.
Calibration
When it comes to the sparking plug gap tool, the measurement calibration is an essential factor that you should also consider. Always confirm that your preferred device has a measurement system where you prefer the calibration method.
Markings
The last thing you should consider before buying is a spark plug gap tool is the markings on the device. It should be easy to read. Laser created markings are always right in this case.
Best Spark Plug Gap Tool Comparison Chart
Our Top Pick Best Spark Plug Gap Tool Review
Now that you already know all available products can’t give you what you need, we are here with our exclusive product reviews for your help.
After conducting thorough research of the product’s features and analyzing the previous user’s opinion we have enlisted these top 10 products especially for you. We believe this review will help you to remove confusion and choose the right option for you.
Let’s begin the review, therefore.
1. Hotop Feeler Gauge – Best Stainless Steel Gap Measuring Tool
Honestly speaking, if you are searching for the best spark plug gap measuring tool, Hotop Stainless Steel Feeler gauge should be your priority. The tampered and hardened steel of this excellent product protects you from corrosion and even from pitting when it combines with lube oil.
When it comes to measuring the hard to reach spots, you can always count on this product. The most exciting feature of this product is it comes with 32 blades in a variety of thickness, which provides you with more flexibility in the workplace.
Folding this tool is super easy, so now you can carry this product wherever you want to move it. The dual marked metric and imperial helps in easy identification. This product is highly durable so that you will always remain stress-free when it comes to using a feeler gauge.
65 manganese steel makes this product durable. You can conveniently store this excellent tool as you can fold it easily. However, a few users found some readability issues because of the numbering process of the individual blades.
The steel has anti-rust and anti-corrosion ability, which ensures that the edges will be protected even if you use this tool more frequently. The diversity of the usage, that’s what makes this product unique and exclusive.
- 32 blades with different thickness provide versatility in work
- Foldable and easy storage
- Rust and corrosion-resistant
- Great build quality
- Easy identification of feeler gauge
- Highly durable
- Sometimes lock nut does not lock in place
2. OEMTOOLS Blade Master – Best Feeler Gauge Gapper
Here is our next pick OEMTOOLS Blade Master Feeler Gauge. If you need the best type of spark plug gap tool to buy with your hard-earned money, this product could be the best option for you.
This excellent product comes with 26 exclusive tempered and hardened steel blades to give you the next level experience. It can measure from 0.0015 inches to 0.025 inch that is why you will get enough flexibility in your work if you have this excellent tool with you.
Besides, you will be amazed by seeing the professional look of the product, which will make you more focused on your project. You can clean this tool easily as the main shaft of this tool is chrome plated. You’ll find each blade is unique and laser etched with inches and millimeters to make your work easier.
When it comes to the removal of leaves, your hand will be highly protected with the exclusive blade protector, which comes with different thumb notch so that you can remove the blade easily without putting any kind of extra effort.
If you want to measure the gap widths or other vital measurements, this product will always make your day shiner. Moreover, the hardened steel of the blade makes it highly durable so that you can remain stress-free for a long time.
If you are someone like us who like to complete the task on their own, trust us; you are going to love this excellent product.
- Comes with 26 tampered steel blades
- Blades are smooth on the edges
- Cleaning up is easy
- Each blade is laser etched for easy identification
- Removal of blades are easy
- Can rust when stored in humid conditions
3. Lisle Spark Plug Gauge Gap
Lisle 67870 spark plug gauge might become your very first plug gap tool. However, if you know how to use it properly, we bet it can be the last plug gap tool you own.
Because this product is insanely durable to serve you for a long time, this excellent product is manufactured in the USA. If you need to gauge or gap any kind of spark plug from 0.50 mm to 2.53 mm, this could be the best option for you.
The tapered edge of this tool is handy when it comes to gaging spark plugs. You’ll find lots of fresh and exclusive features in this tool. One of the exciting features of this tool is if you want to change the side plug wire, you can do it quickly.
As the hole has a flange, you don’t need to put any extra pressure on the central electrode. We want to make my point clear here; this tool is inexpensive and has easy usage, given that all those excellent features it provides to us.
Besides, sometimes you may want to gap an F1 engine plug. You can easily do it by employing feeler gauges, but always careful about the electrode because it can be damaged if anything goes wrong.
The weight of the item is 0.8 ounces, so this product is lightweight that is why you have to be extra careful while dealing with this tool.
So, it will be the best practice to learn first how to use the device properly so that you can avoid any kind of awkward situation in the workplace.
However, this product can be used at its best when you use it with a caliper to get the correct value. You may find other gap tools in the market, but this excellent tool will provide you with all those exclusive features at an affordable price. If you want the best spark plug gauge gap, you can easily count on this product.
- Easily portable
- Built-in adjustment tool
- Highly durable
- Tapered edge helps in gauging
- Easy storage
- Some users argue that it’s not suitable for closing gap
4. CTA Tools Wire Spark Plug Gap Gauge
If you need the best wire spark plug gap, you are in the right place right now. CTA Tools Spark Plug Gap Gauge has all of the abilities to make your day shiner in the workplace. This tool is made with premium steel, which is corrosion-resistant, and you can use the machine for a long time.
This circular gauge is made for you so that you can scan the value. The size of this tool has a wide range from 0.025 t0 0.060 inches to give you exclusive user experience. Now, with this excellent gauge, it is absolutely to get accurate measurements.
Besides, the outer edge of the gauge has nine wire rings so that you can quickly increase or decrease the gap size. The build-in gap adjustor of this tool will provide you excellent flexibility during your work. Besides, the weight of this tool is 1.44 ounces, which is also user friendly.
Whether it’s home or garage, this tool will give you resilience and flexibility so that you can complete your project. The most exciting feature of this product that we love is its heavy-duty construction, which makes it more robust and durable.
However, you should use this product with proper care and safety measures because it contains chemicals that are harmful to human health. We believe, if you know how to use a gap adjustment tool properly with maintaining safety, this product could be the best choice for you.
- All steel construction
- Built-in gap adjuster
- Provides resilience and flexibility
- Functional without battery
- Wide usage
- Contains harmful chemicals
5. CTA Tools 3235 Ramp-Type Spark Plug Gapper
Wouldn’t this be awesome to have a tool that can bring Excellency in your work, and you don’t have to put any kind of extra effort? Yes, of course, it would be excellent to get possession of that kind of tool. If you want the best spark plug gaper, we believe, you’re precisely in the place where you should be right now.
CTA Tools Ramp-type spark plug gaper has an excellent range of 0.50 to 2.5 mm that can provide you with the flexibility to use this tool in a variety of projects. With its exclusive die-cast construction, this product will bring maximum accuracy in your work.
The scale is so much easy to read that it brings you fantastic user experience. The sturdy steel materials help this tool to last longer and also make it more durable for your project. Now, with this product changing spark plugs will be even more natural in the workplace.
But, you have to make sure that you know what you are doing with this tool. This excellent tool is weighing only 0.8 ounces; that is why you can use this tool handy in any kind of project, and it’s also easily portable.
But you should also note that sometimes this product can’t give you the precise value in some worthwhile project. Although the reading is not accurate always, this product could be one of the best choices for you at this price range, given all those cool features it possesses.
- Resilient and flexible
- Strong and highly durable
- Made of steel
- Easily readable scale
- Handy and easily portable
- May not be precise always
6. A & E Hand Tools 4450A E-Z Grip Spark Plug Gap Gauge
If you need to adjust and measure spark plugs in a little bit fashionable way, A & E Hand Tools Spark Plug Gap Gauge is one of the best choices for you. We know the selection and style varies from person to person.
However, this is the best grip spark plug gap gauge. This excellent tool provides you with the opportunity to enjoy all those cool features at such an affordable price. You can easily adjust electrodes with the recess of this tool.
Moreover, on the reverse side, you’ll find the metric gapping scale, which gives more flexibility to you in the workplace. Therefore, now with this excellent tool, the measurement will be more accurate and easily readable.
The soft and comfortable handle helps you in gapping and measuring something. So, your hand will be more protected when you use this tool. Besides, the pocket-clip feature of this tool allows you to keep it in your pocket in a smart way.
This excellent tool has coverage for all spark plug gapping requirements so that you can use it in your every project. However, this product can’t be folded, so it’s not compact. Another important thing about this package is this product won’t come with a case.
But, the lightweight feature of the product helps you to carry it without putting any extra effort. Besides, as we mentioned earlier, it has the smart pocket-clip to carry it smartly in your pocket. We believe this product could be an excellent choice for you as you can enjoy all these unique features and it won’t cost you much.
- Built-in recess for adjusting electrodes
- Metric gapping scale
- Provides clear markings
- Wide usage
- Provides accurate measurements
- Not so compact
7. Performance Tool Spark Plug Gap Gauge
It is needless to say; performance Tool has always been serving us by providing quality products. Now, if you are searching for the best iridium spark plug gap tool, you’re in the right place. Performance Tool Spark Plug Gap Gauge provides us with an excellent opportunity to get seamless service for our project.
Whether you’re a professional or just a DIY enthusiast like me, this product will make your day shiner. People will suggest you not to gap iridium. But trust us; this product will not let you down ever.
The weight of this tool is 0.16 ounces, which makes it extremely lightweight. So, you can carry this tool from one place to another, and you don’t need to put any extra effort into that. Another unique feature of this tool, its tapered hole, will conveniently adjust the electrode.
We know everybody wants a quick and easy solution when it comes to reading the markings. Not every product like Performance Tool will make it so easy for you to read the trademarks. This tool has accurately set spark plugs which comes with electrode tool for making the work more flexible.
Many users have already used this excellent product, and many of them are satisfied with the product quality. But a few users argued that the gap tool bents while adjusting the plug.
However, with that said, we want to admit here that this product is fantastic in the sense that you will find all those excellent features at a very affordable price.
- Affordable and effective
- Handy and ensures accuracy
- Tapered hole adjusts electrode
- Set gaps easily and quickly
- Easily readable markings
- Sometimes the gap tool bents during the plug adjustment
8. GearWrench Large Spark Plug Gap Gauge
In many ways, Gearwrench 2327D is the best spark plug gap gauge that you can buy now. This excellent gauge comes in black color, which gives sit a professional look. The weight of this product is 1.44 ounces, which helps this tool to complete all projects with more precision.
The critical feature of this product will provide you accurate measurement and works smoothly even without any battery. We know many people out there like disk type universal gap gauges. But, they can provide a degree of precisions. That is why you should use a wire type gap gauge like Gearwrench.
This should be the product that you want for spark park gauging. The exciting feature of this product is highly durable. Therefore, you don’t need to worry anymore if you have one.
This product is made in the USA, and we believe this high-quality product will make your day shiner in the workplace. However, it is the best practice to learn how to use a tool before using it.
Therefore, you should know what you are doing. If you know how to use this tool correctly, you can easily measure spark plug electrode gaps on gap plugs, which can be from 0.040 to 0.080.
This product comes with large six-wire SAE or metric spark plug gap gauge so that you can complete your work projects in time and, of course, in the right way.
Moreover, this gap tool is strong enough to adjust electrodes on spark plugs. With all these excellent features, this product can help you in many ways at your workplace.
- Functional without battery
- Best for gapping iridium spark plugs
- Comes in black color
- Wire style gauge
- Easily portable
- The only black color is available
9. K-MOTOR Performance Spark Plug Gap Tool
K-Motor Performance Spark Plug Gap Tool is the next pick in our list. This engine spark plug gap tool comes with a magnetic storage case, which brings extra flexibility when it comes to storing this tool.
K-MOTOR PERFORMANCE Spark Plug Gap Tool
This tool is compatible with 14mm spark plugs. Besides, this tool comes in red color to give it a professional look. We know, not everyone can adapt to the old way of using a spark plug.
Now, with this excellent product, you can bring professionalism to your work with modern technology. You can use this tool in a super-easy way. You have to screw the spark plug into the bottom of the gap tool. You can use the feeler gauge as your own choice, but make sure that it creates enough gap thickness.
Then turning the knob with the feeler gauge will do the rest of the work. You will get one spark plug gap tool in this product. Besides, this package also contains a magnetic screwdriver to make your day even shiner in your project work.
You want to do your task correctly, right? Are you still worried about creating the perfect gap in the workplace? Don’t worry anymore. This product has everything to get you covered.
Now, with K-motor, you will have a perfect hole every time. This product is so easy to use. The billet aluminum makes this product more robust and durable.
Whether you are a professional or just a homeowner who loves to do the task in your way, this excellent tool will provide you with maximum precision so that you can become stress-free in your workplace.
- Compatible with 14 mm spark plugs
- Maximum precision
- Includes one magnetic screwdriver
- Magnetic storage case makes storage convenient
- Provides Perfect gap every time
- A few users argued that machining is not good
10. Aircraft Tool Supply Spark Plug Gapper and Gap Gauge
This is the last product on our list. Aircraft Tool Supply Spark Plug Gapper and Gap Gauge will provide you a lot of excellent features. Are you looking for a gap setting tool for your workplace?
Are you not getting up to the mark performance from your current appliances? Please don’t worry anymore. This excellent tool will provide you everything you need to perform well in the workplace.
This product is so good for closing gaps on huge electrode aviation spark plugs. It comes with a great design, and this tool has become as popular among DIY enthusiasts as it provides high performance.
You can clamp on your workbench with this excellent tool for getting better results. This exclusive tool is made from premium quality steel which makes it durable and robust.
Now, this product is weighing 1.8 pounds. We love this product for its versatile use. For instance, you can gap the plug even on an airplane’s engine with this excellent tool.
If you want to get great value for money, we believe this product could be the best example of that. Amazingly, you can get all those excellent and cool features from this superb product at a very affordable price.
- CNC machined surfaces for exact alignment
- Compatible with all auto lite electrode spark plugs
- Made of premium quality steel
- Affordable and effective
- Creates efficient gap
- Little bit heavy
How To Use Spark Plugs Gap Tool
When it comes to installing new spark plugs, the first step is ensuring that the cap has the proper gap size. The distance between the center and side electrodes is known as the gap.
If you want to gap the spark plugs, the first thing that you should focus on is to learn how to use spark plugs gap tool. You are smart enough if you choose the best spark plug gap tool.
Because a good quality tool will make the task a lot easier. You can follow these steps to use spark plugs gap tools properly.
Step 1:
First of all, you have to locate the feeler gauge, or even you can locate a gap gauge as well.
Step 2:
Cleaning up the spark plug is the next vital task to do. You have to make sure that there is no dirt or debris remains in the spark plug. However, always avoid abrasive materials when you are cleaning the spark plug.
Step 3:
Now, you have to use your gap or feeler gauge to read the measurement of the existing spark plug gap. Merely running the tool through the electrodes is good enough to take the size.
However, if there are significant differences between the existing and recommended gap, you may need to adjust the gap. At this point, you will feel the necessity of a useful spark plug gap tool.
Step 4:
Now, this step is crucial. Because you have to make necessary adjustments in the gap at this step, you have to use your spark plug gap tool to adjust the gap. You can narrow the gap by merely bending the ground electrode in, and to widen the hole, you have to bend it out.
But, you should always remain careful when bending the electrode. You can’t exceed a few fractions of an inch when it comes to turning the wire. Because it can’t tolerate limitless pressure, and never hit the electrode, which is located in the center.
If the central electrode breaks, you might want to get a new spark plug gap tool. Therefore, it’s a best practice to have the best spark plug gap tool for getting the job done.
Step 5: Now, at this point, you have to measure the gap again. You have to make sure that the tool correctly fits between the electrodes. You must repeat the entire adjustment procedure until reaching that state.
How To Gap Spark Plugs Without Tool
In a general sense, you’ll find an ideal spark plug gap in every single vehicle. Now, if you want to check your car’s spark gap, simply reread the manual, or also you can check the website of the manufacturer. The point is you should find the ideal gap of your car’s spark plug.
Now, as we mentioned earlier, the difference is the distance between the electrodes of the spark plug. Therefore, you should measure the gap first and check it with the recommended gap. You may not need to gap the cap if you buy the recommended spark plugs, because in most cases, they come with correct specifications.
However, if there are any significant differences, you need to gap the spark plug. Now, we know, a spark plug gap tool could be the best possible solution in this situation. However, you can do it in another way as well.
Did you know needle nose pliers can make a good gaper that can gap the spark plug? It may not the perfect way for all kinds of spark plugs. But, trust me, it’s going to give you the right solution for your problems with the spark plug.
However, you can always use a useful spark plug gap tool to make your day shiner. But, it’s not an easy task to find the perfect tool for getting your job done. But, when it comes to gapping spark plugs without the tool, you have to think smartly.
Generally, people measure the gap in inches or millimeters, but in either way, the measurement is small. Here, let us tell you a particular way. Get a good strip or plastic sheeting and then measure the width of a spark plug which is correctly gapped with the plastic sheeting or strip.
You can always use this thing when it comes to comparing the gap of your spark plugs. We know, you can’t get them as accurate results as a feeler gauge can provide you. But, it can at least save your day in bad times. However, the perfect way of gapping the spark plug is by using the right spark plug gap tool.
Frequently Asked Questions (FAQs) About Spark Plug Gap Tool
Q1. What happens if the spark plug gap is wrong?
Answer: The engine efficiency will be adversely affected if the spark plug gap is false. The bad thing happens, especially when the engine remains idle. The engine will run unevenly for inappropriate gapping of the spark plug. Your overall engine output can be affected by this.
Q2. How do I know if the gap needs readjusting?
Answer: You can simply check whether any adjustment is required in the difference of the spark plug. Get a measuring tool that is adjusted with the original size of the gap. Now, you have to insert the tool into the gap.
If everything goes well, it will be well fit the gap. In that case, you don’t need any further adjustments. However, if the measuring tool leaves some space in the gap, you need to readjust the gap again.
Q3. Is a more significant spark plug gap better?
Answer: There is no evidence that the more substantial spark plug gap is necessarily better. Ironically, the more significant the spark plug gap, the worse the engine will run. Because the spark can’t reliably strike over the long gap in the spark plug.
Q4. Do I have to replace the measuring tool every time I replace my spark plug?
Answer: In a general sense, you should replace the measuring tool. It will help to maintain accuracy every time. Another fact is, if you use the tool for more than twenty times, it is the best practice to change the measuring tool for the next time.
Final Words
Finally, we want to conclude these exclusive buyers’ guide here by saying that you can consider these articles as a guideline system for choosing the best spark plug gap tool for you. A useful tool can help you to get an accurate gap in your spark plug.
We know, choosing the best product is quite severe nowadays as you will find all of those cheap products out there. We believe this guide helped you so that you can make the right decision for buying your tool.
