Genuine OEM Jaguar Crankshaft Main Bearing, part number C2Z30450. This critical engine component supports the crankshaft, allowing it to rotate smoothly within the engine block with minimal friction. Main bearings are essential for maintaining proper oil pressure and preventing excessive wear on the crankshaft and engine block. Weighing 0.033 kg, this bearing is manufactured to extremely tight tolerances. Choosing genuine OEM main bearings ensures the correct material composition, precise dimensions, and factory-specified clearances, which are vital for the long-term reliability and performance of the engine.