2 New NGK Iridium IX Spark Plug LZTR5AIX-13 Pack of 2 O437

6 New NGK IRIDIUM IX Spark Plug LZTR5AIX-13 # 2314, Iridium IX Plug, 14mm Thread Size, 25mm (.984") Reach, 5/8" (16mm) Hex Size, Tapered Seat, Resistor, Extended Projected Tip, Solid Terminal Nut, Extended Shell Hex Size, Projected Core Nose, Fine Wire (0.6mm) Iridium Center Electrode, Tapered Cut Ground Electrode, .051" (1.3mm) Gap, Heat Range 5