K-Motor Spark Plug Gap Tool with Feeler Gauge (M14 x 1.5 Thread) Made of Stainless Steel (14mm)

Was simply amazed at how well engineered this lil spark plug gapper is made.Feels good, looks good, and a breeze to cap plugs.If you don't mind spending the bucks, you will be happy you did. Will last a lifetime.

Excellent product - very well made & high quality - worth the extra money. Works with short and long plugs as long as they're 14mm. Highly recommended.

Because of a fundamental design flaw that I didn’t consider until I tried to use it… The spark plug ground electrode that this pushes on to close the gap springs back slightly. So you can get it tight on the feeler gauge but once you back the nut off it opens back up some arbitrary amount. Not consistent enough for me to say use a .002” smaller feeler to get your correct gap at the end. Speaking of feeler gauges, this set doesn’t come with a .032”… How are you going to sell a feeler gauge with a spark plug tool that doesn’t have the most common gap sizes?Enough ranting, even though it’s a pain to use, it’s still better than raking the electrode with a conventional tool IMO. So for that and the price I still give it 5 stars. It is very well built btw!

Well made and easy to use, however I did not like the little dimple it leaves behind. Ultimately ended up sticking with the old method of bending.

It’s a great tool when you need a precision spark gap, I needed to use on my supercharged engine worth the money, would get another feeler gauges tho

I figured I’d give a review. The product was made well. It’s not some light cheap piece of metal. Way easier and more accurate to gap spark plugs than the tapping method. The screw driver given with the gapper is perfect if you end up going too far. I just changed my spark plugs to see if it would help with my misfire issue. Sadly it did not. Although once I removed the old plugs I checked their gap and they were ranging from .028-.032 when they’re supposed to be consistently .028 throughout each cylinder. I will be using this gapper tool from now on to ensure the job is done correctly. Thank you K-Motor Performance for making things easier with accuracy.

About as good as can be expected for a cheap-o spark plug gapper. Machining is nice, threads were clean and didn't have excessive backlash. Feeler gauges are pretty accurate. Not a true "precision" gapper, but will do fine for anything other than the most demanding applications.

I ended up buying an additional gap tool as this tool is limited and I have concerns:1. The tool is limited to 14 mm plugs and can't gap 12 mm plugs. Other tools on Amazon will do both.2. The tool places pressure on part of the electrode rather than the entire electrode which does not provide as uniform a gap. Other tools put pressure on the entire electrode.3. The feeler gauge does not have a .028 setting which is a very prevalent gap. Other tools provide a much better feeler gauge.4. It is a bit annoying to have to screw the plug into the tool. Other tools do not require the plug to be screwed in.So, this gap tool works with limitations; but there are better choices.