N55 Oil Pump Guide Rail Drive Chain Kit 11417618941 11417516132 For 135i 335i 435i 535i 640i 740i N55B30A Engine Kits This oil pump guide rail drive chain kit is designed for vehicles equipped with the N55B30A engine.It includes metal and plastic components engineered to withstand operational stress and provide.The design ensures precise fitment for specified models, supporting engine function.The kit contains the OEM-spec 11417618941 tensioner and other necessary parts to maintain proper chain tension.This helps consistent oil flow and supports overall engine performance.By maintaining correct oil pressure and reducing strain on internal components, the kit contributes to extended engine service life.Compatibility includes specific applications for 135i, 335i, 435i, 535i, 640i, and 740i models with the N55B30A engine.Installation does not require modifications, allowing for direct replacement during maintenance or repair procedures.The assembly is intended to integrate with existing engine components to support efficient.