91554-ZZ3-000 Collar (6.5X16X16.5) - Overview. The 91554-ZZ3-000 Collar (6.5X16X16.5) is a precision-engineered component designed for Honda marine engine systems. This collar functions as a distance spacer and connecting element within the rigging and accessories of marine engines, ensuring parts remain securely aligned to optimize overall machinery performance. With its exact dimensional standards, it ensures seamless integration with existing parts, maintaining optimal performance and durabil