87121-ZW8-S00 Rr (8) Mark - Overview. The 87121-ZW8-S00 Rr (8) Mark is a genuine Honda marine rigging component supporting the identification and marking system within Honda marine engine systems. This part plays a crucial role in ensuring proper parts identification for maintenance and repair processes. Designed to integrate seamlessly within the exhaust or engine rigging system, it helps maintain overall marine engine functionality and reliability. Crafted to factory specifications, this compo