Autolite began making spark plugs in 1936! They engineer spark plugs for a wide variety of applications for automotive, power sports with Autolite Iridium XP, Autolite Revolution HT, Autolite Double Platinum, Autolite Platinum, Autolite Copper Core, Autolite Racing Hi-Performance, and Autolite XS Xtreme Sport. Autolite prides themselves on continuously enhancing spark plug technology for longer life and better performance.