Upgrade your vehicle's performance with the NGK Iridium IX TR55-1IX spark plug, designed to deliver superior reliability and efficiency. With a 14.00mm tapered design, it ensures optimal combustion and extended durability. Ideal for a range of car and truck models, this spark plug is a go-to choice for automotive enthusiasts looking for quality ignition components. From the renowned brand NGK, this spark plug is listed under part number 7316 and is compatible with various systems. PerformanceParts, the seller, offers a broad selection of top-quality parts and accessories for your vehicle. Trust in the precision craftsmanship of NGK to keep your engine running smoothly.