Denso is an original equipment manufacture for high-end European marques, specializing in spark plugs, ignition coil, and A/C compressors. Denso has been providing the spark to ignite your favorite European engine since 1949 with their high-quality platinum and iridium spark plugs. ECS Tuning is proud to carry Denso Spark Plugs for your VW, Audi, BMW, Porsche, Mini, and Mercedes Benz.