Untitled Document Spark Plug Thread Repair Kit Solid Inserts M14x1.25 14mm For Aluminium Cylinder Heads with stripped Spark Plug threads Kit 19119 This Kit contains the Special German Made Reamer Tap for M14x1.25 Spark Plug Thread Repair. Inserts in Kit: 5 x 12.7mm, 5 x 17.5 mm. Installed Length Click For Spare Inserts Please click on the link below for Video Demo. Click for Demo Very High Quality Kit Made in Germany.