Tune up your engine with the good stuff! This is a complete set of 6 genuine Denso Iridium spark plugs, part number FK20HR11 (also replaces OEM number 90919-01247). Iridium plugs are top-tier – they last longer, provide a stronger spark for better combustion, and can even help with fuel efficiency and smooth idling. This set is perfect for 6-cylinder or V6 engines, commonly found in 3.5-liter displacements across many Toyota, Lexus, and other Japanese or domestic vehicles (always double-check your vehicle's specific requirement!). They're brand new in their original boxes, with a warranty. Don't put cheap copper plugs in a modern engine that calls for iridium. This is the right part for a professional-level tune-up. If your car is misfiring, has rough acceleration, or just needs routine maintenance at 60k-100k miles, these are what you want. Keep your engine running strong and smooth.
