“Future meets Classic” : Next generation of genuine Mercedes-Benz replacement parts from the 3D printer - Mercedes-Benz Group Media - Spark plug holder from the tool kit of the Mercedes-Benz 198 model series (coupé and roadster), also suitable for other model series. It is available again as a genuine replacement part and can be obtained from any authorised Mercedes-Benz dealer via the Classic Center. The spark plug holder is manufactured from high-quality plastic with the help of 3D printing.