Genuine OEM BMW Crankshaft Bearing Shell, part number 11217627039. This bearing shell is a critical engine component that supports the crankshaft, reducing friction and wear during operation. It is designed to fit within the engine block or connecting rod assembly. Manufactured to exact metallurgical specifications, this bearing ensures the precise oil clearance required for engine longevity. Genuine OEM bearings are essential for maintaining factory tolerances and preventing premature engine failure.