87121-ZZ3-000 rr (60) mark - Overview. The 87121-ZZ3-000 rr (60) mark is an essential identification component designed for use within Honda marine engine systems. Primarily associated with the rear marking of 60-horsepower models, this part plays a key role in ensuring correct labeling and system identification within the rigging and accessories system. Manufactured to meet exact factory specifications, it ensures seamless integration with existing parts, maintaining optimal performance and dur