Multi-ground electrodes improve ignition capabilities and are less sensitive to increased voltage requirements due to gap growth.
Designed to specific manufacturer ignition requirements, NGK's multi-ground plugs maintain all the features of their standard plugs, including:
Thread diameter: 10mm
This product can expose you to chemicals known to the State of California known to cause Cancer or birth defects and reproductive harm. For more information go to: https://oehha.ca.gov/proposition-65