87121-ZY9-J00 RR (65) Mark - Overview. The 87121-ZY9-J00 RR (65) Mark is an essential component of the Honda marine rigging and accessories system. This part serves as a rear marking emblem used predominantly for identification and branding on Honda marine engine units. Its precise role supports maintaining the integrity and reliable identification of the engine part in the overall marine system. Designed as an OEM component, this marking plate ensures seamless integration with existing parts, m