Engine Oil Pump Drive Chain Kit compatible with vehicles equipped with N46 and N42 engines.Designed for precise fitment without the need for modifications.Matches specifications for performance.Compatible engine codes: N46 B16 A, N46 B20 A, N46 B20 C, N46 B18 A, N45 B16 A, N46 B20 B, N45 B20 A, N46 B20 E, N42 B18 A, N46 B20 CC, N46 B20 CA, N46 B20 CD, N46 B20 CB, N46 B20 E, N46 B20 E.Fits models including: - 1 Series E87, E81, E88, E82 from various years with 118i and 120i trims - 3 Series E90, E91, E93, E46 in sedan, touring, coupe, and convertible body styles with 318i, 320i, 318Ci, 316i trims - 5 Series E60 LCI 520i - Z4 E85 2.0i roadster - X1 E84 1.8i - X3 E83 LCI 2.0i Kit includes: - Chain for oil pump - Crank gear - Gear for oil pump - Tensioner for oil pump - Guide for oil pump