Main Crankshaft Bearing Set with part numbers 2720334901 and 2720333902.Designed for M272 engines including M272E25 (2.5L V6, 2496cc), M272E30 (3.0L V6, 2996cc), and M272E35 (3.5L V6, 3498cc).Compatible with vehicles equipped with these engines, including but not limited to: C230, C250, C280, C300, C350, CLK280, CLK350, CLS300, CLS350, E230, E280, E300, E350, GLK300, GLK350, ML300, ML350, ML450 Hybrid, R280, R300, R350, S280, S300, S350, S400, S400L Hybrid, SL300, SL350, SLK280, SLK300, SLK350, and W203, W204, W211, W212, W164, W221, R171, R230, V251, X204 chassis.Includes 8 main bearing shells.Fits standard specification (STD) crankshaft journals.Intended as a direct replacement for bearings to restore factory-specified clearances and function.