40105-ZVL-000 Grom, Case (Lower) - Overview. The 40105-ZVL-000 Grom, Case (Lower) is a crucial OEM component within Honda marine engine systems. This part functions as a lower case grommet, serving to protect and seal the engine housing system effectively. Designed to support rigging and cable systems, it ensures seamless integration with existing parts, maintaining optimal performance and durability.. Key Features. Grommet designed specifically for the lower case area of Honda marine engines, s