The NGK 5464 NGK Iridium IX Spark Plug is a high-quality ignition component designed for car and truck engines. With a length of 8.400 inches, this spark plug is manufactured by the reputable brand NGK, known for its reliable and durable automotive parts. The Iridium IX technology ensures superior performance and longevity, making it a popular choice among car enthusiasts and mechanics looking to enhance their ignition systems.