90004-ZW5-010 Bolt Special (8X16) - Overview. The 90004-ZW5-010 Bolt Special (8X16) is a crucial component in Honda marine engine systems. This special bolt plays a vital role in securing parts within the marine engine, ensuring stable and reliable operation. Its precise dimensions and design guarantee seamless fitment in Honda's Active Marine series, maintaining the integrity and durability of the assembly.. Key Features. Special 8x16 bolt specifically engineered for Honda marine engines.. Genu