SPARK PLUG IRIDIUM IX BPR6EFIX-15Part No. BPR6EFIX 15 Type SPARK PLUG Brand NGK SPARK PLUGS Unit of Measure EACH Description NGK Iridium IX Spark Plug Warranty Unknown Seat Type Tapered Thread M14 x 1. 25 Reach 17. 5 Hex Size 16 Resisted Yes Gap 1. 5mm OEM Number 93668 Features NGK's IX Iridium series plugs were designed specifically for the performance enthusiast Fine wire center electrode ensures high durability and a consistently stable spark Trivalent metal plating provides