Q: Looking for a spark plug socket for my Lycoming O320-B2B. Uses REM size spark plugs. What size socket to I need?
Both sizes (12-00710 and 12-00712) will work. The only difference between the two is the ratchet to be used to drive the socket. The 12-00710 requires a 3/8 inch ratchet drive, and the 12-00712 requires a 1/2 inch ratchet drive.
Q: Are these spark plug sockets size 7/8?
Yes, the socket size for 12-00712 and 12-00710 is 7/8.
Q: Will this socket fit Tempest fine wire plugs?
No, see part number 12-01693 for use with Tempest fine wire plugs.
