Ford Triple Oversize spark plug repair last chance for M14x1.25 Ford spark plug. This kit will repair holes as large as .730 inches or 18.5mm by installing two inserts, 1 insert inside the other so they are locked together. Larger insert P/n 55522 smaller inside insert P/n 51457.   Instructions P/n 5600 This kit includes the special triple oversized reamer that Reams & Counterbores for the triple oversized insert.

SPECIAL Note: Heads with RF-1L2E or RF-C25E casting # Counterbore tool p/n 55518  included in this kit  If you don't have one of these casting numbers just skip the p/n 55518 counterbore start with the Reamer.   http://www.timesert.com/html/pi.html