10pcs Engine Crankshaft Main Bearings Set for C250, E200, W204, W203, W212, W211, R172 models equipped with 1.8L M271 engine.Compatible with M271 engine variants including M271.820, M271.860, M271.861, M271.940, M271.942, M271.944, M271.948, M271.950, M271.952, M271.955, M271.956.Fits standard specification crankshaft journals.Package includes ten main bearings.Designed to restore fit and function for M271 1.8L inline-4 engines used in supercharged and turbocharged applications.Part numbers referenced: 2710330601, 2710330602.