For outdoor power equipment parts like spark plugs, ignition coils, and sensors to industrial solutions such as air conditioning systems and factory automation equipment, Denso delivers innovative solutions that support a better daily life. Many parts look similar, so it’s crucial to ensure you’re choosing the right replacement for your original equipment or engine model. Not sure? Use our Parts Lookup Tool to view part diagrams and find the correct replacement. Spark Plug Thread Size: 14mm Spark Plug Reach (mm): 12.70mm Electrode Tip Material: Nickel Electrode Core Material: Copper Spark Plug Seat Style: Flat Spark plugs conduct electrical energy from the ignition coil, creating a spark that ignites the fuel. WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov