Goodson offers 14mm spark plug thread repair insert kits for all aluminum and Ford Triton heads in 4.6L, 5.4L and 6.8L engines. All inserts used for aluminum heads are made of hard anodized aluminum for proper heat transfer and thread strength. All inserts work with both tapered seat and gasket seal type spark plugs. Kits include five inserts, one tap, one core drill, one installation tool, one counterbore butter, six locking pins, one 6" by 1/16" drill bit, one 4" drill tube, 2 oz tapping fluid, 20ml heat conductive thread locker and complete installation instructions.
