M14x1.25x9.4mm spark plug insert p/n 44125 QTY 5 M14x.125x9.4mm spark plug inserts by Time-Sert QTY 5 Requires kit 4412 search # B00IZKYTO0 to install this insert. Used in many applications that use 3/8 reach washer seat plugs. for spark plugs that are 14x1.25 3/8 reach Washer style. Quanity 5 pcs.