This main crankshaft bearing set is designed for vehicles equipped with M152, M157, and M278 engines.It is compatible with 4.6L, 4.7L, and 5.5L V8 configurations found in models including CLS500, S500, E63, and others across chassis codes W212, C217, and W166.The part corresponds to reference number 276033150.This component serves as a functional replacement to restore engine specifications.The package includes main bearings suitable for the listed applications.Please verify your vehicle compatibility using the VIN or existing part numbers before purchase.