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The Best Spark Plug Gapping Tool of 2023 – Reviewed and Top Rated

2,681 Reviews Scanned

Rank No. #1

CTA Tools 3235 Spark Plug Gapper

Wide range of professional automotive specialy tools
Professional grade
Heavy duty design
Built to be Resilient and Flexible

Rank No. #2

PQY Universal Spark Plug Gap Tool with 32 Blades Steel Feeler Gauge for Most 10mm 12mm 14mm 16mm Spark Plugs Red

Fitment: The PQY spark plug gap tool is for most of 14mm 12mm 10mm 16mm standard spark plugs. But not for 18mm thread .
Spark plug gapping tool :the tool is made of high quality aluminum with matte texture,allows you to adjust spark plug gap easily and quickly .Just place your spark plug onto the spark plug gapper and then use your desired feeler, then screw the knob slowly until get your desired gap thickness.
Tip for adjusting gap: Some spark plugs electrode will spring back when adjust gap. So if your gap target is 0.44mm ,we suggest to use 0.42mm, this way when it spring back you will get it to 0.44mm.
32-Blades Feeler Gauge:the feeler gauge is made of high quality manganese steel,with measurement range from 0.0015inch (0.04mm) - 0.035inch (0.88mm).Including one 0.010Inch(0.25mm) brass blade to use with electronic ignitions.
Attention:this spark plug gapping tool can not work for long reach or short reach plugs spark plugs, please check your spark plug’s size before purchase .

Rank No. #3

Toolwiz Spark Plug Gap Tool with 32 Blade Steel Feeler Gauge, Universal Gapping Tool for Most 10mm 12mm 14mm 16mm Thread Spark Plugs, Red

Universal Fitment: Toolwiz spark plug gap tool is compatible with most of 14mm 12mm 10mm 16mm standard spark plugs. NOT compatible with 18mm thread and long reach or short reach plugs spark plugs, please check the size of your spark plugs before purchase
Effort Saving: Spark plug gapper allows you to adjust the gap with less time and effort. Simply place the spark plug onto the spark plug gapping tool and select your desired feeler gauge thickness, then screw the knob slowly till the side electrode compresses to the desired gap thickness
Adjustment Tips: For normal physical phenomena, some spark plugs electrode will spring back when adjust the gap. You are suggested to use 0.028in feeler gauge size if your desired gap is 0.03in, smaller scale than the target gap is recommended
Feeler Gauge: Dual marked stainless-steel feeler gauge with measurement range from 0.001inch to 0.04inch (0.03mm to 1mm) is made of high quality flexible 65 manganese steel, hardened and polished for long time and accurate usage
Warranty Garantee: Come with 1x Spark Plug Gap Tool and 1x Feeler Gauges in one package. You are backed by our performance assurance limited lifetime warranty. If there is any issues with the gap measuring tool, please feel free to send us direct message

SaleRank No. #4

Harrier Hardware 3-Pack Spark Plug Gap Gauge Tool Engine Mechanic

Get the perfect gift for that gearhead in your life with this spark plug gap gauge tool from Harrier Hardware!
These gap tools are accurate and easy to read with measurements from 0.02 inches to 0.1 inches (0.02" - 0.1")
The opposite side includes metric measurements of 0.5mm to 2.5mm
The small hole punched through the disc makes it easy to attach this handy tool to a keychain or store on a hook
Includes (3) gap gauge tools

Rank No. #5

CTA Tools 3238 9 Wire Spark Plug Gap Gauge

Wide range of professional automotive specialy tools
Professional grade
Heavy duty design

Last update on 2025-07-04 / Affiliate links / Product Titles, Images, Descriptions from Amazon Product Advertising API

How Do You Buy The Best Spark Plug Gapping Tool?

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Potential sources can include buying guides for Spark Plug Gapping Tool, rating websites, word-of-mouth testimonials, online forums, and product reviews. Thorough and mindful research is crucial to making sure you get your hands on the best-possible Spark Plug Gapping Tool. Make sure that you are only using trustworthy and credible websites and sources.

We provide an Spark Plug Gapping Tool buying guide, and the information is totally objective and authentic. We employ both AI and big data in proofreading the collected information. How did we create this buying guide? We did it using a custom-created selection of algorithms that lets us manifest a top-10 list of the best available Spark Plug Gapping Tool currently available on the market.

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Features: What bells and whistles matter for an Spark Plug Gapping Tool?
Specifications: How powerful they are can be measured.
Product Value: This simply is how much bang for the buck you get from your Spark Plug Gapping Tool.
Customer Ratings: Number ratings grade Spark Plug Gapping Tool objectively.
Customer Reviews: Closely related to ratings, these paragraphs give you first-hand and detailed information from real-world users about their Spark Plug Gapping Tool.
Product Quality: You don’t always get what you pay for with an Spark Plug Gapping Tool, sometimes less, and sometimes more.
Product Reliability: How sturdy and durable an Spark Plug Gapping Tool is should be an indication of how long it will work out for you.

We always remember that maintaining Spark Plug Gapping Tool information to stay current is a top priority, which is why we are constantly updating our websites. Learn more about us using online sources.

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FAQ:

Q: How do you adjust spark plugs?

A: Adjust them accordingly. Use the tool to adjust the bottom electrode. When you hold the spark plug with the electrodes facing the floor, you’ll want to bend the bottom one very gently either in toward the other electrode if you want to narrow the gap, or out, if you want to increase the gap slightly.

Q: What is a spark plug gauge?

A: A spark plug gap gauge is a disc with a sloping edge, or with round wires of precise diameters. It is used to measure the length of the gap between the ground and central electrodes. The simplest gauges are a collection of keys of various thicknesses which match the desired gaps.

Q: What is about spark plugs?

A: Spark plugs come in many forms and each one has very specific properties and applications depending on the engine in use. While quality and reputation play a big part in spark plug choice, the best choice is the one that provides proven results and builds continued trust with customers.

Spark Plug Gapping Tool