Genuine OEM Jaguar Crankshaft Main Bearing, part number C2Z30445. This precision-engineered component supports the crankshaft within the engine block, reducing friction during rotation. It is a crucial part of the engine's main bearing assembly. Weighing 0.033 kg, it is a small but vital component. Choosing a genuine OEM main bearing ensures factory tolerances for optimal oil film thickness, preventing premature wear and maintaining engine longevity.