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

I bought an aluminum one of these a while back and had the hardest time trying to get it to gap the plugs. I could only get it to turn to a certain point before it came too difficult to turn any more. This one was so much easier to use, and I was able to gap the plugs in less time than it took to do one with the aluminum one.

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!

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.

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.

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.

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.

The finish is great, adjusting screw & hole, and threaded spark plug hole, are nicely finished (no burrs) and not too loose. I used this tool to tighten the gap on 8 spark plugs. 14mm spark plug hole was correct per my order. The 2 magnets are nice to have but not necessary for my storage. I would recommend.this product.

Its a tool and it does its job, but in my opinion it's way over priced. Fit and finish was nice, but I don't gap enough plugs to justify this considering that if I did do a ton of gapping, there are much cheaper ones that will get the job done and last longer than I plan on wrenching. Plus threading the plug in everytime is more of a hassle than benefit.Overall a decent tool, just can't justify the price vs performance.