OEMTOOLS 25610 1/2 Inch Fix-A-Thread Repair Kit for Automotive Spark Plug Thread Repair, Durable Stainless Steel Inserts, Professional Thread Repair System

nice

Used to fix a stripped crank bolt on a 396 big block Chevy. Worked well. I had to use two of the thread serts for the depth. Don't crank the second one in too hard or you'll go over the first one you inserted. You'll need an odd sized drill bit so research that and order it at the same time.

Purchased this for my first helicoil type thread repair attempt. It works, no complaints there, most important thing is a proper sized hole drilled straight. Repaired the rear transmission Mount on my truck, threads stripped out of the hole like it was tightened too much or when the case was hot. Aluminum drills easy so no biggie just wanted to try this instead of getting into tap sizes I’m only going to use once.

Tap works but mine had a flaw in it cause it broke off inside the hole with very minimal pressure.

Did exactly what I needed

The first problem I ran into was that the wrench did not fit the tap. Once I got the tap started, it sheared off and became stuck in the spark plug port. Obviously the material used to create the tool is substandard and likely has done more harm than good to my motor.

Product worked perfect and saved my Harley Davidson cylinder head spark plug threads!

Great product, it helps to replace those damaged bolt threads from my aluminum automatic transmission.