|Chaser cleans threads in spark plug hole of dirt, carbon build-up, and metal particles. Double ended for both 14mm and 18mm threads. Neoprene band on hex drive holds tool securely in any 13/16" deep-well spark plug socket. 1lbs shipping weight.|
SPRK PLG THRD CHSR ATS20200
Part arrived on time and was as was expected
I had a 18 mm spark plug helicoil that had a tiny tip that broke off (fatigue failure I believe). I couldn’t get the spark plug to start threading no matter what I did. A fellow A & P had this item, I borrowed it & GENTLY chased the threads with it. Viola, spark plug threaded first try. I haven’t used the one I purchased yet but it is the same item my buddy bought. Works way better than the Champion spark plug chaser. Good for cleaning up threads but improperly used could also cross thread & damage them.
It is a solid tool and priced right. Performs as expected.
I thought this little tool would be good but when I used it, it resulted in a damage thread so I had to replace the thread in the cylinder. I may have used the tool improperly, so I wont put the whole blame on it. But I would suggest users to be very careful when using it.
This is a poorly made and oversized tool. I ruined the threads on a cylinder using this. It gouges the threads instead of cleaning them. This tool should not be sold by aircraft spruce.
The ATS 20200 Thread Chaser is intended to straighten out deformed threads without cutting. The "without cutting" part is very important as this tool is not a tap -- it is not intended to cut metal, but to reshape the threads and clean out residue such as carbon and dirt. The usual technique is to cover the threads of the tool with a layer of grease prior to using it so that the grease will capture the dirt and debris as it cleans up the threads.