The product is a set of 4 OEM NGK Iridium IX Spark Plugs, specifically the TR55-1IX model with a Manufacturer Part Number of 7316. NGK is a well-known brand in the automotive industry for producing high-quality spark plugs. These iridium spark plugs are designed to provide better performance and fuel efficiency for car engines. The TR55-1IX model is compatible with various vehicle makes and models, ensuring a reliable ignition system. This set of spark plugs is ideal for those looking to improve their engine's performance and efficiency....