41108-ZV4-000 Water Screen - Overview. The 41108-ZV4-000 Water Screen is a critical OEM part designed for Honda marine engine systems. This water screen serves as a protective pre-filter in the cooling system, preventing debris such as plant matter and sediment from entering and damaging the engine cooling passages. Its primary role is to ensure proper water flow, which is vital for maintaining engine temperature and preventing overheating. Manufactured to strict Honda factory specifications, th