TR55-IX Plug - Stock heat range, gapped at .060".
These NGK Iridium spark plugs use a iridium center electrode for the ultimate in performance. They create a hotter spark, which means better combustion, and that improves performance and means less harmful emissions. Iridium spark plugs also require lower ignition firing voltage, resulting in quicker starts and easier cold weather starts throughout the life of the plugs.
Sold in boxes of 4 plugs. |