91318-ZV5-822 O-Ring (2.0X55.5) - Overview. The 91318-ZV5-822 O-Ring (2.0X55.5) is an essential sealing component used within Honda marine engine systems. Designed to provide a tight, durable seal, this O-ring plays a critical role in preventing leaks and maintaining the integrity of the fuel and hydraulic systems. Manufactured to strict OEM standards, it ensures seamless integration with existing parts, maintaining optimal performance and durability.. Key Features. Precisely sized 2.0mm thickne