90019-ZVD-000 Flange (6x40) Bolt - Overview. The 90019-ZVD-000 flange (6x40) bolt is an essential component used in Honda marine engine systems. This bolt plays a critical role in fastening and securing components within the marine engine assembly, ensuring reliable mechanical connection and integrity during operation. Designed specifically for use in Honda Active Marine series engines, it ensures seamless integration with existing parts, maintaining optimal performance and durability.. Key Feat