HEL-5523-14 - Helicoil 5523-14 Thread Repair Kit, for Spark Plugs, 14mm x 1.25, with Tap, Installation Tool and 30 Inserts.
Helicoil is the original spark plug port thread repair. This kit offers the highest quality and most durable repair available. The first choice of professional mechanics and engine rebuilders. Thread size kit 14-1.25mm.