87121-ZVR-A10 Rr (115) Mark - Overview. The 87121-ZVR-A10 RR (115) MARK is a critical component within Honda marine engine systems, specifically supporting the rigging and mounting requirements of the 115 horsepower engine units. This part plays a vital role in maintaining the reliability and structural integrity of the marine engine assembly. Designed to integrate seamlessly with the engine's rigging system, it ensures optimal performance and durability by matching the factory specifications pr