Precise range
Measures gaps from 0.6mm to 2.4mm (0.02-0.10 inches), covering most standard spark plug gaps for gasoline engines.
- Free shipping
- 14-day easy returns
- Secure checkout
- Quality guaranteed
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Why customers love it
Precision spark plug gaps, right in your pocket
This coin-shaped spark plug gap gauge offers a simple, precise way to measure and adjust the gap on your spark plugs, fitting easily into any tool kit for reliable routine maintenance.
- Measures gaps from 0.6mm to 2.4mm (0.02-0.10 inches)
- Compact coin design for effortless storage and portability
- Milled slots with clear markings for quick, accurate readings
- Lightweight at just 16g, with a 37.5mm diameter for comfortable handling
- Works with most standard spark plug gaps for gasoline engines
Why you'll love this gap gauge
Portable and handy
Compact coin design makes it effortless to store in any tool kit or pocket, so it's always on hand for routine maintenance.
Quick and clear
Milled slots with clear markings allow for quick, accurate readings, helping you set gaps confidently every time.
Lightweight comfort
Weighing just 16g with a 37.5mm diameter, it's lightweight and comfortable to handle during extended use.
Specs
The details that matter
Built to last outdoors, season after season.
- Range
- 0.6-2.4mm (0.02-0.10 inches)
- Weight
- 16g
- Diameter
- 37.5mm
- Type
- Coin-type spark plug gap gauge
Our worry-free shopping promise
If your order arrives damaged, defective, or not as described, contact us within 14 days and we will make it right with a replacement or refund.
Frequently asked questions
Everything you might want to know before you order.
What range of spark plug gaps can this gauge measure?
This gauge measures spark plug gaps from 0.6mm to 2.4mm (0.02-0.10 inches), which covers most standard gaps for gasoline engines.
How portable is this gap gauge?
Its compact coin design makes it effortless to store in a tool kit or pocket, so you can keep it handy for routine maintenance anywhere.
How do I read the gap measurement accurately?
The gauge features milled slots with clear markings, allowing for quick and accurate readings without guesswork.
Is the gauge comfortable to use for long periods?
At just 16g with a 37.5mm diameter, it is lightweight and comfortable to handle, even during extended use.
Will this gauge work with my gasoline engine's spark plugs?
Yes, it works with most standard spark plug gaps for gasoline engines, making it a versatile tool for DIY mechanics and professionals alike.
Shipping & returns
Shipping
- Delivers to United States (based on your selected country/region).
- Estimated delivery: 3–15 business days after dispatch.
- Shipping cost: Free.
Returns
You can request a return within 14 days after delivery. Standard returns have a €4.00 EUR (approximately $4.66 USD) flat-rate return shipping fee, deducted from your refund. Return shipping is free for items that arrived damaged, defective, or incorrect. Items should be unused and in original packaging where possible. Contact us before sending anything back.
E
Very good
D
It works very well, ideal for adjusting spark plugs; the truth is that it is not as precise as a feeler gauge, but the hole is very practical for enlarging or narrowing the opening of spark plugs.
E
Thank you very much
R
A small tool that does not require batteries but is very useful for calibrating spark plugs from almost all brands and helps us achieve better fuel consumption in cars or even motorcycles. It has a wide range of measurements or calibrations that are very useful in daily life.
A
The product arrived on time, but I had to go to the post office to pick it up. Excellent tool for calibrating spark plugs...
E
Very useful for adjusting the electrode distance after cleaning the spark plug, according to the motorcycle manufacturer's instructions. In the case of 2-stroke engines, it is essential. Although synthetic oil is recommended for use in the mixture, every few kilometers it is advisable to remove the spark plug, check the spark, clean it, and then adjust the distance between the terminals.
It is of high quality, easy to use, suitable for many measurements, and has a very reasonable price.
G
Excellent for calibrating spark plugs, and comes in both mm and inches.
D
I have received the product and it is as described in the advertisement 😃😃 satisfied, now I just need to use it.
J
Delivered to Kyiv in 11 days by the Ukrposhta branch.
Everything matches the photo and description. Made with high quality, an excellent tool for measuring spark plug gap. I recommend the product and the store!
P
It looks of good quality, excellent for calibrating spark plugs and highly recommended.
R
Basic part for spark plugs, economical and simple, recommended
S
It is very useful for calibrating the spark plug light on my motorcycle. Plus, it arrived very quickly.
S
Thank you, this is good for calibrating spark plugs.
N
Great quality, I recommend the seller and the product, it also arrived super fast.
K
Product tested and approved, highly recommended.
A
For those who are meticulous and want the maximum precision in the spark plug gap, this simple accessory precisely calibrates the ignition gap of the spark plug. Simple and intuitive, just slide the spark plug into the guide and stop at the recommended measurement on the maintenance manual... On my Mercury 115 CT engine, the gap was 1mm. The measurement in inches is also indicated on the opposite side... Recommended, great price!
A
The product quality is very good. It seems to be made of steel. This is a very good product to buy. It can be used as a keychain.
F
It arrived super fast in a week, I had one like this before but I lost it and it's very useful.
R
Thank you, good product 😉
A
Received what ordered. Fast delivery. Nice tool. Measurements are pretty accurate.
K
GREAT PRODUCT VERY WELL PACKAGED I RECOMMEND..
J
Item took 11 days for delivery to canada. The spark plug gauge matches its advertised description and i found it measures my spark plugs accurately so i'm happy with this purchase. Thanks!
