Crankshaft main bearings set compatible with N51, N52, N53, N54, and N55 engines.Includes part numbers 11217627037 and 11217627033.Designed for 2.5 L6 and 3.0 L6 engine variants.Fits models including 128i, 323i, 330i, 335i, 525i, 740Li, X1, X3, X5, and X6.Intended for use in naturally aspirated and turbocharged inline-six engines.Restores fit and function.