Toyota Nickel Alloy Spark Plug 90919-01155 QJ16AR-U Wholesale Vehicle-Specific

When your Toyota experiences idle jitter, weak acceleration, or cold-start difficulty, usually the original spark plug electrodes are aged or heavily carboned, resulting in insufficient ignition energy. This spark plug, during normal operation, converts high voltage into a spark to precisely ignite the mixture, ensuring smooth engine operation and complete fuel combustion. Fits Toyota models from around 2000 onward, OEM numbers 90919-01155 / QJ16AR-U. When installing, be sure to use a torque wrench to tighten to standard torque to avoid cylinder head damage from over-tightening or leakage from under-tightening.