The Denso 3499 Iridium Long Life Spark Plug Gap 0.044 is a high-quality spark plug designed specifically for Lexus, Scion, and Toyota vehicles with L4 engines. With a gap of 0.044, this spark plug provides optimal performance and durability, ensuring a reliable ignition system for your vehicle. Featuring the trusted brand of Denso and interchange part numbers SC16HR11 and 9091901275, this spark plug is a reliable choice for maintaining the spark energy needed for efficient engine operation.