31110-ZVL-B10 Flywheel - Overview. The 31110-ZVL-B10 Flywheel is a critical component within Honda marine engine systems designed to store rotational energy and smooth out engine speed, ultimately facilitating reliable engine starting and operation. As part of the engine's ignition system, this flywheel supports the magneto system, ensuring consistent performance and efficiency. Engineered to meet factory specifications with precise dimensions and tolerances, it integrates seamlessly with existi