2 packs of 6! 14mm x 1.25. 3/8" reach (10mm) These are NOS heli coil inserts for repairing soak plug threads. Made in USA. These are inserts only, you'll need a heli coil tap and install tool. R13
12x Helicoil 14mm Spark Plug Thread Repair Inserts #R513 14- 1.25mm Reach 7/16"
12x Helicoil 10mm Spark Plug Thread Repair Inserts #R474-4 M10x1.0mm 1/2" Reach
HELICOIL 14MM SPARK PLUG THREAD REPAIR KIT 14-1.25mm New 4971-14 1030-14
14mm Spark Plug Thread Repair Inserts Reach .472" Qty 12 Engine Cylinder Head
HELICOIL 18MM SPARK PLUG THREAD REPAIR KIT 5523-18
25648 OEMTOOLS New Spark Plug Thread Repair Inserts Set of 6
