Genuine OEM BMW Guide Bearing Shell, part number 11218570701. This bearing shell is designed to support rotating shafts, such as the crankshaft, and significantly reduce friction within the engine. It is a crucial component for smooth and efficient engine operation. The part is identified as 'blau' (blue) in the handler title, suggesting a specific material or coating. Genuine OEM parts ensure precise tolerances and material integrity for optimal engine performance and longevity.