91501-ZV4-000 Distance (6Mm) Colr - Overview. The 91501-ZV4-000 Distance (6Mm) Colr is a crucial OEM spacer collar used in Honda marine engine systems. It plays an essential role in ensuring proper spacing and alignment within the rigging or mounting assemblies, contributing to the reliable operation of marine engines and related systems. Designed specifically for precise fitment, it ensures seamless integration with existing parts, maintaining optimal performance and durability.. Key Features.