Compare Motorcraft Iridium Spark Plug - SP535X Part #: SP535X Line: MOT Motorcraft Iridium Spark Plug 2 Year LIMITED WARRANTY Seat: Tapered Thread Size: M14 Heat Range: 6 Hex Size (mm): 16mm Hex Size (in): 5/8 Inch Preset Gap (in): 0.035 Inch Preset Gap (mm): 0.9mm Thread Reach (in): 0.984 Inch Resistor Plug: Yes Center Electrode Core Material: Copper Center Electrode Tip Material: Iridium Approximate Resistor Value (Ohm): 2000 To 9000 Ohm Insulator Height (mm): 3.5mm Insulator Height (in): 0.138 Inch Ground Electrode Tip Material: Nickel Thread Reach (mm): 25mm Metallurgy: Iridium Show More Show Less
Compare Motorcraft Iridium Plug Number CYFS12YT4 Spark Plug - SP580X Part #: SP580X Line: MOT Motorcraft Iridium Plug Number CYFS12YT4 Spark Plug 2 Year LIMITED WARRANTY Seat: Tapered Thread Size: M14 Heat Range: 6 Hex Size (mm): 16mm Hex Size (in): 5/8 Inch Preset Gap (in): 0.031 Inch Preset Gap (mm): 0.8mm Thread Reach (in): 0.984 Inch Resistor Plug: Yes Center Electrode Core Material: Copper Center Electrode Tip Material: Iridium Approximate Resistor Value (Ohm): 2000 To 9000 Ohm Insulator Height (mm): 3.5mm Insulator Height (in): 0.138 Inch Ground Electrode Tip Material: Nickel Thread Reach (mm): 25mm Service Number: CYFS12YT4 Metallurgy: Iridium Show More Show Less
Compare Motorcraft Iridium Spark Plug - SP586 Part #: SP586 Line: MOT Motorcraft Iridium Spark Plug 2 Year LIMITED WARRANTY