Helicoil 5396-14, Sav-A-Thread HT Spark Plug Thread Repair - M14 x 1.24

M14 x 1.25 spark plug thread repair, Designed for -Inch Half Thread-Inch (HT) spark plug applications in 4.6 and 5.4 liter engines, Allows access to deep ports, Positive mechanical locking feature ensures insert stability; insert will not come out, Utilizing the piloted reamer tap, alignment is maintained and pre-drilling is not required. Note: It is recommended that the head be removed before installation to ensure chips do not enter the cylinder

• HeliCoil 5396-14 Sav-A-Thread HT - Ford 5.4 and 4.6 Liter Spark Plug Thread Repair