The Denso 3499 Iridium Long Life Spark Plug Gap 0.044 is a high-quality spark plug designed for vehicles such as Lexus, Scion, and Toyota with a L4 engine. This spark plug features a durable iridium construction and a 0.044 inch gap for optimal performance. With manufacturer part numbers SC16HR11, 9091901275, and 90919-01275, this spark plug is a reliable choice to ensure proper ignition and smooth operation of your vehicle. While it does not come with a manufacturer warranty, Denso is a trusted brand known for producing long-lasting automotive parts.