Notes: Iridium tip. Single. Plug type 11IR5Y. Sell until stock is depleted. This part is legal for sale and use on Emissions Controlled Vehicles when used in accordance with the manufacturers application guide because it is a direct or consolidated replacement part. The following vehicles are considered Emissions Controlled Vehicles: 1966 and newer US manufactured California Certified vehicles; 1968 and newer US manufactured Federally Certified vehicles; 1968 and newer Foreign manufactured vehicle.