13315-MJ0-010 Bearing A (17Mm) - Overview. The 13315-MJ0-010 Bearing A (17mm) is an essential component within Honda marine engine systems. This bearing supports the mainshaft by providing critical rotational support and reducing friction, ensuring the engine operates smoothly and efficiently. Designed to meet the precise factory specifications, this bearing integrates seamlessly with existing parts, maintaining optimal performance and durability.. Key Features. High-quality 17mm main bearing de