srpvw

My friends spark plug threads are stripped, we thought about putting a helicoil in it does anybody know the size of the thread we will need?
thanks

Steve

Mike Dooley/RCS

Helicoils really do not work well. You need an insert instead. The spark plug has 14mm threads.
Thanks,

srpvw

Thanks Mike
Whats the difference between the helicoil and the insert?

Thanks Steve