This Mercedes-Benz W220 S600 is powered by a twelve-cylinder M137 engine built for smoothness and precision. To fix this we installed these parts from ABCspecialist; -brand new Mercedes Benz spark plugs (double platinum for M137 engine) -Remanufactured Ignition Coil Packs Left Right side (Original Mercedes-Benz parts) -Remanufactured Ignition Transformer Module (Original Mercedes-Benz part) With the right parts in place, the smooth running returns — just as a V12 is meant to perform. 👉 Shop now