Compare Maximum number of 4 items selected Denso Iridium Power Spark Plug - 5331 Part #: 5331 Line: DEN Denso Iridium Power Spark Plug 1 Year Limited Warranty Metallurgy: Iridium Center Electrode Tip Material: Iridium Heat Range: 20 Center Electrode Core Material: Copper Thread Reach (mm): 12mm Resistor Plug: Yes Seat: Tapered Thread Size: 14mm Hex Size (mm): 16mm Preset Gap (mm): 1.1mm Approximate Resistor Value (Ohm): 5000 Ohm Show More Show Less