90006-ZVA-000 Oil Drain Bolt - Overview. The 90006-ZVA-000 Oil Drain Bolt is an essential component of Honda marine engine systems. It plays a critical role in facilitating the safe and efficient draining of used oil during routine maintenance, which helps maintain the engine's overall reliability and performance. Engineered to fit perfectly within the oil drainage system, it ensures seamless integration with existing parts, maintaining optimal performance and durability.. Key Features. Specific