Upgrade your car's ignition system with the NGK Iridium IX Plug Spark Plugs. These premium spark plugs, featuring a sealed design, are perfect for gasoline engines. With a manufacturer warranty of 2 years, you can be confident in their quality and reliability. Specifically designed for use in cars and trucks, these spark plugs have an OE/OEM Part Number of NGK and a Manufacturer Part Number of 2313 LZTR4AIX-11. Trust in the brand name of NGK to deliver high-performance and long-lasting spark plugs for your vehicle.