91051-ZY6-003 Bearing (50X90X28) - Overview. The 91051-ZY6-003 Bearing (50X90X28) is a precision-engineered component essential for the smooth operation of Honda marine engine systems. This tapered bearing supports critical rotational functions within the marine propulsion system, enabling efficient mechanical motion and reducing friction between moving parts. Designed to meet strict factory specifications, it ensures seamless integration with existing parts, maintaining optimal performance and