This set includes crankshaft main bearings and connecting rod bearings designed for compatibility with vehicles.The part numbers included are 77944600 and 77946600.It fits the following models: E46, E81, E88, E90, N43, N45, N46, 116i, 118i, 120i, 316i, 318i, 320i, 520i, X1, X3, and Z4. Rod bearing part numbers covered: 11247536774, 11247536777, 11247552063, 11247552064, 11247576717, 11247576718. Main bearing part numbers covered: 11211439945, 11211439949, 11211439952, 11211439953, 11211439954, 11211439957, 11217515368, 11217515377, 11217515378, 11217515379, 11217580991, 11217580992, 11217580995, 11217580997, 11217580999, 11217581000, 11217581001, 11217581003, 11217581004, 11217581005, 11217581007, 11217581008, 11217581009, 11217627025, 11217627026, 11217627027, 11217627029, 11217627030, 11217627031, 11217627033, 11217627034, 11217627035, 11217627037, 11217627038, 11217627039, 11218605856, 11218605857, 11218605858. Additional part numbers included: 77947600, 72143600081, FL 21719 000081, HS 21720 000. The set contains one connecting rod bearing set and one crankshaft main bearing set.Installation requires mechanical expertise and appropriate tools.No instructions are included.