Hello,
I am about to change my glow plugs and need a socket to turn the bolt on the harmonic balancer. I do not have any sockets this large and plan to buy a set (I have all craftsman tools)

Does anyone know the size of this bolt? I just want to make sure I get it in the set.
Thanks
Dan

The truck is an 88 F250 7.3idi

 

the head should be 15/16 if i remember correct

 

I agree 15/16 is what it should be.

 

Thank you very much.