40109-ZV5-000 Case (Lower) Grom - OverviewThe 40109-ZV5-000 Case (Lower) Grom is a genuine Honda marine engine part that plays a critical role in the sealing system of the lower housing assembly. This component supports the engine's structural integrity by acting as a durable protective seal, preventing water intrusion and debris from compromising the engine housing. Engineered to exact Honda factory specifications for dimensions and fitment, this lower case grommet ensures seamless integration