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 for durability and resistance to wear.The kit is built to proper alignment and function of the oil pump drive chain, supporting consistent engine performance.Compatible with select models including 135i, 335i, 435i, 535i, 640i, and 740i, this kit provides a precise fit for.It contains the OE 11417618941 tensioner and other necessary parts to maintain correct chain tension, promoting smooth and improved oil flow.Enhanced oil delivery helps reduce stress on engine components, contributing to extended engine life.The design supports straightforward installation without the need for modifications.This kit is suitable for use in various model years, offering functional support for engine maintenance and performance optimization.