The (4 pack) Autolite APP5125 Double Platinum Spark Plugs are designed for ignition secondary systems in cars and trucks. Made with high-quality platinum material, these spark plugs offer superior performance and durability. The manufacturer part number APP5125 ensures compatibility with a wide range of vehicles. With a nickel California Prop 65 Warning, these spark plugs are a reliable choice for maintaining optimal ignition systems in your vehicle.