19331-ZVP-003 Gasket - Overview. The 19331-ZVP-003 Gasket is an essential component designed specifically for Honda marine engine systems. This gasket plays a crucial role in sealing the thermostat case, preventing leaks and maintaining the engine's cooling system's reliability. It ensures seamless integration with existing parts, maintaining optimal performance and durability.. Key Features. OEM Genuine Honda component designed to match factory specifications exactly.. Seals the thermostat case