Thread size: M14 X 1.5 mm. Thread tap and the drill material: HSS (High-speed Steel). Check that thread and pitch of the tap and the bolt match. To repair a spark plug thread no Pre-drilling is necessary if using the special Spark Plug Tap.
US PRO Tools 2pc Spindle Drill Adapters M14 x 2 Thread, 10mm Shaft 3406
US PRO Tools 2pc Spindle Drill Adapters M14 x 2 Thread, 10mm Shaft NEW 3406
Sealey VS301.15 Thread Insert for VS301 M14 x 1.25mm 15mm - Pack of 10
TIME-SERT® M14 x 1.25 Taper Seat Spark Plug Thread Repair Kit w/ 15.7mm Inserts
Thread Repair M14 x 1.25 15 piece Helicoil Compatible 14mm Damaged Threads UK
15 Piece Thread Repair M14 x 1.5 Helicoil Style 14mm Damaged Threads
