13323-PCA-004 Main Bearing C - Overview. The 13323-PCA-004 Main Bearing C is an essential component in Honda marine engine systems. This main bearing supports the crankshaft, enabling it to rotate smoothly within the engine block. Designed to exact factory specifications, it ensures seamless integration with existing parts, maintaining optimal performance and durability.. Key Features. Specifically designed to support the crankshaft in Honda marine engines, facilitating smooth mechanical motion.