The product is a set of 4 genuine Toyota 2ZR-FE 1.8L Iridium Spark Plugs, with the manufacturer part numbers SC16HR11 and 90919-01275. These spark plugs are made of ceramic, nickel, and iridium materials, and have a manufacturer warranty of 3 years. They are designed as direct replacements for the original equipment manufacturer (OEM) parts, ensuring compatibility and performance. The spark plugs are suitable for gasoline fuel type and have a manufacturer heat range of 200°C, making them a high-quality performance part for car and truck ignition systems.