90512-ZV0-000 Washer Plain (6mm) - Overview. The 90512-ZV0-000 Washer Plain (6mm) is a small yet vital fastening component used primarily in Honda marine engine systems. This plain washer plays a crucial role in distributing load evenly across fasteners, preventing loosening due to vibrations in marine environments, and ensuring secure mechanical connections. Designed specifically to meet Honda factory specifications, it ensures seamless integration with existing parts, maintaining optimal performance and durability.. Key Features. Plain washer with 6mm inner diameter for precise fitment.. Genuine Honda OEM component ensuring exact dimensions and quality.. Supports mechanical stability by distributing fastening load evenly.. Protects against loosening and wear in harsh marine environments.. Matches factory specifications, dimensions, and tolerances.. Provides clean integration with mating hardware, seals, and housings.. Why Choose Genuine OEM. Using original Honda parts like the 90512-