The NGK Standard Spark Plug Box of 10 (Part Number CPR9EA-9) is designed to deliver reliable ignition performance for a variety of applications. These spark plugs come in the iconic NGK yellow box packaging, ensuring you receive the trusted quality that NGK is known for. The plugs feature a high-grade alumina silicate ceramic that provides optimal dielectric performance, making them an excellent choice for those seeking dependable ignition solutions. Designed with a solid 98% pure copper core, these spark plugs ensure superior heat dissipation and conductivity, allowing for a wider heat range. The triple gasket sealing feature prevents combustion gas leakage, enhancing engine performance and efficiency. Additionally, the trivalent metal plating offers exceptional anti-corrosion and anti-seizing properties, facilitating easier installation and removal. Upgrade your engine's ignition system with the NGK Standard Spark Plugs and experience the difference in performance and reliability. <b>Features:</b> * High-grade alumina silicate ceramic for optimal dielectric performance: High-grade alumina silicate ceramic for optimal dielectric performance * Triple gasket sealing to prevent combustion gas leakage: Triple gasket sealing to prevent combustion gas leakage * 98% pure copper core for superior heat dissipation and conductivity: 98% pure copper core for superior heat dissipation and conductivity * Trivalent metal plating for anti-corrosion and anti-seizing properties: Trivalent metal plating for anti-corrosion and anti-seizing properties