90131-ZV5-000 Drain Plug Bolt - Overview. The 90131-ZV5-000 Drain Plug Bolt is an essential component of Honda marine engine systems. Specifically designed to secure the drain plug, it facilitates effective drainage of engine oil or water, supporting essential maintenance and fluid changes. Its precise OEM design ensures seamless integration with existing hardware, maintaining optimal performance and durability of Honda marine engines.. Key Features. High-quality OEM drain plug bolt engineered f