This DENSO Iridium Spark Plug, part code FC16HR-Q8, is designed to deliver superior ignition performance. Its advanced iridium construction ensures exceptional durability and a stable spark, contributing to smoother engine operation and improved fuel efficiency. The FC16HR-Q8 plug is engineered to meet the demanding requirements of modern engines. It provides reliable starting and consistent power delivery across various driving conditions, making it a dependable choice for maintaining your vehicle's peak performance. DENSO's commitment to quality is evident in the precision manufacturing of this spark plug. It is built to withstand high temperatures and pressures within the combustion chamber, offering a long service life and reducing the need for frequent replacements.