A Main Bearing Cap is used to enclose and secure the main bearings, which are responsible for supporting the crankshaft and reducing friction during its rotation. The main bearing cap is bolted or fastened to the engine block, ensuring proper alignment and stability of the crankshaft.Attributes:• Prevent excessive flexing or deformation of the engine block• Reduce vibration, and minimize friction between the crankshaft and the bearingsApplications:A Main Bearing Cap houses the crankshaft's bearing surfaces, providing support and minimizing wear under the engine's immense forces.