87301-ZZ0-000 Fr (90) Mark - Overview. The 87301-ZZ0-000 Fr (90) Mark is a genuine Honda marine component designed to serve as a front marker for marine engine systems. This marker plays a critical role in identifying and preserving the integrity of your Honda marine engine, ensuring reliable operation and proper alignment in the rigging and accessories system. Compatible with various Honda marine engines, it ensures seamless integration with existing parts, maintaining optimal performance and d