87301-ZZ5-010 Fr (50) Mark - Overview. The 87301-ZZ5-010 Fr (50) Mark is a genuine Honda OEM component designed for the marking and identification system of Honda marine engines. This part plays a crucial role in ensuring that visual identification markers on the engine are accurate and durable, helping maintain clear and reliable system identification critical for maintenance and operation. Compatible primarily with Honda's marine engine models, including the BF50 series, this emblem fits seaml