41100-ZVL-600ZA Gear NH565 Case - Overview. The 41100-ZVL-600ZA Gear NH565 Case is a critical component in Honda marine engine systems. It acts as the housing assembly for the gears that transfer power effectively from the engine to the propeller, ensuring smooth mechanical motion and optimal engine performance. Designed to support the gear system, this case plays a vital role in maintaining the reliability and durability of your marine equipment. Its precise manufacturing ensures seamless integ