NGK 94374 Iridium IX spark plugs, specifically designed for use in a car or truck. These spark plugs are part of the Iridium IX line, known for their high-quality performance and durability. They are manufactured by NGK, a trusted brand in the automotive industry, and each spark plug weighs approximately 0.5 lbs. The NGK 94374 spark plugs are designed to provide reliable ignition for your vehicle, making them an essential component of the ignition system.