Toyota Platinum Iridium Spark Plug 90090-91180 SK20R11 High Performance Ignition Upgrade

This Toyota Platinum Iridium spark plug (OEM: 9009091180 / SK20R11) designed for 2000-2010 Toyota Corolla, Camry, RAV4 and Celica 1.8L-2.4L engines. It uses platinum and iridium electrodes to significantly improve ignition efficiency and combustion stability, reduce carbon buildup, and extend life. Replacement uses torque wrench to tighten 18-22 N·m; installation moderate; suitable for experienced techs. The plug gap is 1.1 mm, matching OEM; can directly replace 90090-91180 and older models without gap adjustment.