87121-ZZ5-000 Rr (50) Mark - Overview. The 87121-ZZ5-000 Rr (50) Mark is an authentic Honda marine engine system component, primarily acting as a rear mark decal for identification on Honda outboards. This OEM part supports the visual branding and model recognition within Honda marine rigging components. It ensures seamless integration with existing parts, maintaining optimal performance and durability.. Key Features. OEM genuine Honda component designed to meet factory specifications and tolera