87121-ZZ3-010 Rr (60) Mark - Overview. The 87121-ZZ3-010 Rr (60) Mark is an essential component of Honda marine engine systems. It serves as a rear marking label designed to maintain proper identification and facilitate maintenance and servicing of the marine engine. Engineered for seamless integration with the system, this OEM genuine part supports the overall reliability and longevity of your marine equipment. It ensures optimal performance by matching factory specifications down to every deta