This engine rebuild kit is designed for N55B30 engines.It serves as a direct replacement to restore engine function and functionality.The kit includes essential components for a comprehensive engine overhaul, proper fitment and consistent with factory specifications. Included Components: Timing Chain Kit Oil Pump Guide Chain Gear Intake and Exhaust Camshaft Adjuster Sprocket Set Connecting Rod Bearing Shells Set Main Bearing Shells Set Head Bolt Kit Set Engine Gasket Seals Rebuild Kit Connecting Rod Set Piston Rings Set Compatible Part Numbers: 11317545959, 11367583207, 11317523884, 11247628035, 11122165470, 11367522290, 11367583208, 11417516128, 11417519870, 11417552899, 11417526132, 11417584079, 11247576714, 11247576715, 11247576717, 11247552063, 11247628034, 11247628035, 11247558880, 11217627037, 11217581009, 11217627031, 11217627027, 11217627033, 11217580993, 11217627038, 11217627039, 11218605857, 11218605858, 11217580999, 11217581000, 11217581001, 11217627029, 11217627030, 11217581003, 11217580997, 11127599212, 11127587804, 11137600482, 11117587168, 11117530262, 11118618864, 11340035853, 6138060001, 5100020171, 4129100186, 030299770298, 11247624615, 11258619196, 11257610297, 11257610298, 11257589824, 11257587914. Compatible Vehicle Models: Fits 1 Series (F20, F21), 3 Series (F30), 5 Series (F10), X3, X4, X5, and X6 models equipped with the N55B30 engine.Please verify your vehicle identification number and existing part numbers before purchase to compatibility.This kit is intended to replace worn or damaged components to return the engine to its standard operating condition.