ATOPLEE Metric Thread Tap,M16 HSS 6542 Right Hand Thread Tap (M16x1.5)

Saved my bacon after removing my 02 sensor also removed its threads. I had a very confined space to work in under the car, but had just enough room to use a 12pt 1/2 socket over the end of it and a stubby ratchet. Muffler shop said they'd just replace the bung and weld a blank over the hole, but that would require removing the front flex pipe to do the work. They quoted a minimum of $150, so saved me $135.After checking the angle of the tap over and over, I went slow until it finally bit and started cutting the threads. I turned in and then backed out repeatedly without backing all the way out a dozen times, going a bit deeper each time. Couldn't be happier that I was able to fix what I broke with this tool.I just wish it wasn't do long. It's over 4 inches. If it were 3", would have made the job easier to get down force on the tap.

10/10 miracle tool helped restore O2 bung hole threads that were cross threaded.I was dealing with a O2 sensor hole that was cross threaded from old sensor removal and thread chaser not centered right when used. New O2 sensor would pop out randomly while driving due to only being able to catch on first 2 crosthreaded threads. With this tap and tap magic cutting oil I was able to get down to undamaged thread and repair entire bung.

This is just what I needed to clean out my old rusty trailer hitch holes on the frame of my 2013 Honda CR-V. I started by using some pb blaster and a plumbers wire brush pipe cleaning tool. While this didn't go all the way into the threads, it did remove some dirt and rust at the base of the hole. I then used the tap to clean out / renew the threads. Three of the four holes were fairly easy, but the fourth was more problematic. The forth is blocked by the muffler and it was difficult to get the tap to thread into that one. This one hole took me about fifteen minutes to get the tap to seat properly. Finally got it and now the threads are like new. There is no way I could have gotten the bolts for my trailer hitch into these mounting nut holes without this tap.

Perfect. Worked like it was supposed to.

Works as should. Used it several times now.

I found that the O2 sensor in my daughter’s car was seized when trying to replace it. I managed to get it out but it destroyed the threads in doing so. I was beside myself. It turns out this is not an uncommon thing to happen.The first thing I tried was an oxygen sensor thread chaser. No luck but I did manage to destroy the tool. Then I bought a second chaser from another auto parts store. Nope. I figured the only option was to install an insert because the old sensor took some metal with it during its removal.Then I figured I’d try a tap. After a quick search, I bought this from Amazon and it arrived the next day.I used a 12 point metric socket and a ratchet to screw it into the hole due to the tight space I had in the car. I also used a lot of spray lube. At first it seemed to just be spinning in the hole but I kept going, making sure to back out a turn or two to clean the threads. Turn I noticed the tap was actually going further into the hole with every turn.After removing the tap, I tried to install the sensor but it just wouldn’t go. I then screwed in my second thread chaser one time. After removing it I was able to install the sensor. I was relived. The tapping operation and installation took about 30 minutes,So if this happens to you don’t despair. This tap works! Just go slow.

Got in a pinch when one of my lower control arm bolts crossthreaded going in the subframe. Can't get anything over M12 off the shelf anywhere so with 1 day shipping this came in clutch to clean up the threads and save me from a potentially really expensive problem.

I drive a 2003 Mitsubishi Lancer ES.My manifold cat o2 sensor slot got stripped a bit and it was either buy a new one, or rethread. The better, cheaper and more hopeful option was to rethread.If you're planning on a small project like rethreading your o2 sensor slot(s), this tap bit is the specialty bit size and threading.Size: M18Thread: 1.5Best practices:1. Ensure o2 sensor slot is clean of dust, debris, etc.2. It's possible to do this with a drill, but I prefer by hand. Less chances of drilling out the slot instead of threading it.3. Secure the catalytic converter so that it will not move or get damaged as you attempt to rethread the o2 sensor slot.4. Apply your choice of cutting fluid/oil.5. Place tap into slot and place a moderate amount of your strength/weight pushing it into the slot.6. Begin turning it with your choice of tool, slowly, to make sure you're at the correct angle.7. The bit is designed in such a way that you can see how far in you've gotten. Just remember that a quarter inch of the end of the tap is not thread, so you'll want to go farther into the slot by about 1/4 (quarter) inch to get a full threading completed.8. Slowly remove the tap bit by unscrewing/turning it back out.> It should be good to go now. Test by putting your new o2 sensor into the o2 sensor slot of the catalytic converter.>> If you have an old o2 sensor, ensure it has been properly rethreaded as well. You can do this with what is called a "die" bit. It rethreads bolts/screws/etc. Sizing will be the same as the tap: M18 x 1.5