Oil Pump Drive Chain Kit Replacement for E90 E91 E93 E46 E84 X3 118i 120i 318i N46 N42 11317507551 This oil pump drive chain kit is designed for compatibility with various vehicle models equipped with N46 and N42 engine variants.It includes all necessary components for installation, proper of the oil pump timing system.The kit contains: 1 x Oil pump chain 1 x Crank gear 1 x Oil pump gear 1 x Oil pump tensioner 1 x Oil pump guide Compatible engines include: N40 B16 A, N42 B20 A, N46 B20 A, N46 B20 C, N45 B16 A, N46 B20 B, N46 B18 A, N45 B20 A, N43 B20 A, N46 B20 CC, N46 B20 CA, N46 B20 CD, N46 B20 CB, N46 B20 E, N42 B18 A, N46 B20 E Fits selected models from the 1 Series, 3 Series, 5 Series, Z4, X1, and X3 series with specific engine codes and production years, including but not limited to: - 1 Series E87, E81, E82, E88 with 118i and 120i trims - 3 Series E90, E91, E93, E46 with 318i, 320i, and related trims - 5 Series E60 LCI 520i - Z4 E85 Roadster 2.0i - X1 E84 1.8i - X3 E83 LCI 2.0i Installation is straightforward with direct fitment into designated engine configurations.No modifications are required.