The Denso Direct Ignition Coil 673-7109 is a compatible replacement for Saab vehicles requiring part numbers 12 57 3190 or 12573190 for proper functioning. This coil is designed for use in Saab vehicles and is designed to provide improved performance and fuel economy. It features a robust construction that is designed to withstand high combustion temperatures, and it is built with advanced materials to provide optimized durability and an extended lifespan. The Denso Direct Ignition Coil helps reduce misfires and bring stability to the engine, while also providing a more consistent spark.