Customer Reviews for GEARWRENCH 14 mm x 18 mm Spark Plug Open Thread Chaser

Did exactly what it’s designed to do. Rethreaded stripped threads of my lawnmower cylinder head.

Rating provided by a verified purchaser

Luckily I looked at the threads before putting this anywhere near my aluminum head, the relief cuts were not properly deburred so it would have damaged my head if used as-is. I had to clean it up with a 60 degree file. Also, it requires thin-walled deep socket. It's too long to use with standard 13/16" spark plug socket. I ended up cutting off the thread that I was not using in order to use without buying a new socket.

Just what I needed.

Excellent