This DENSO Iridium spark plug, part code KJ16CR-L11, is designed to deliver superior ignition performance. The advanced iridium alloy used in the center electrode ensures exceptional durability and a high melting point, allowing for a finer electrode tip. This finer tip requires less voltage to ignite the air-fuel mixture, leading to improved fuel efficiency and reduced emissions. The U-groove ground electrode design further enhances ignitability by creating a larger spark gap and reducing quenching effects. This design promotes more complete combustion, resulting in smoother engine operation and increased power output. DENSO's commitment to quality means this spark plug is built to withstand demanding engine conditions and provide reliable service life. Choosing the DENSO KJ16CR-L11 spark plug ensures your engine receives a powerful and consistent spark. This translates to better throttle response, easier cold starts, and overall enhanced engine health. It is an ideal upgrade for drivers seeking reliable performance and efficiency from their vehicle's ignition system.