Universal Spark Plug Gap Tool for Most 10mm 12mm 14mm 16mm Spark Plugs Red

This is the absolute best spark plug re-gap tool. I bought another style that didn’t work because the plug didn’t fully thread into the body. This made it sooo easy to gap precisely. I love love love this tool.

Talk about a perfect gap every time. I ran a test to see what the spring back of the plugs would be. I needed to gap them to .016 so used a .012 feeler gauge and every plug game out perfect to .016 No more tap and guess and hope you didn’t go to far. This thing is awesome. It’s built beautifully, strong and durable. I expected a cheap plastic twist knob but it’s actually a very nice, knurled aluminum knob. Just lock it in a vice and you have complete control. I just did 8 plugs in just minutes compared to the old tap and pray. This will definitely be in the tool box at the track.

The difference between using this tool and a gap coin couldn't be more night day. I spent a good half hour trying to gap 4 plugs the other night and thought I'd gotten it as indicated by my gapping coin. Then this tool came in and I found a 0.004" range using the feeler guage. It took probably less than 5 minutes to precisely dial in all 4 plugs within 0.001". Love this tool, won't ever go back to the coin.

I bought this to replace a gap tool that I found limiting. I am pleased with this tool:1. The tool supports both 12 mm and 14 mm plugs which is convenient as I have both.2. The tool puts pressure on the entire electrode and not just the tip which creates a more uniform gap.3. The feeler gauge has all the gap sizes necessary to gap just about any plug.4. You don't have to fidget with screwing the plug into the gap too.5. The tool is of heavy construction and works well.As with all gap tools, it is best to gap to a slightly smaller gap than intended as the electrode springs back a little bit.

Item works like it should. Probably be alot easier to do away with the knob and install a T-handle to make it easier to close the gap.

This product is very well made and includes the feeler gauge. Precise CNBC manufacturing takes all the guess work out and you have a perfectly gapped plug in less than 30 seconds

I’m really impressed with this. It’s overbuilt, over engineered and I’ll never need to buy another. It’s built like a tank. In terms of gapping a plug, it does the job efficiently and easily. I’d suggest following the instructions and going down another thickness as the plug does tend to spring back slightly; this is to be expected. Great tool if you’re working on engines!

Finally! A tool that anyone can use. Gaps spark plugs quick and easy. Lives in my toolbox.