SC16HR11 Iridium Spark Plug Common for multiple Toyota models 90919-01275 / 90919-T1014

Toyota Carina/Avalon/Corolla and Camry general use iridium spark plug SC16HR11, OEM numbers including 90919-01275, 90919-T1014, installed on cylinder head to ignite the mixture for efficient engine operation. Suitable for many Toyota models from 2000 onwards. Replacement difficulty medium; labor about 0.5-1 hour; torque wrench required to proper tightening. If starting problems, rough idle, sluggish acceleration, or higher fuel consumption occur, spark plugs may be worn or carboned and need replacement to restore ignition performance.