91305-ZY6-003 O-Ring (6.5X1.5) - Overview. The 91305-ZY6-003 O-Ring (6.5X1.5) is an essential sealing component used within the fuel or fluid systems of Honda marine engine systems. This O-Ring plays a critical role in preventing leaks of fluids or gases, maintaining the integrity and efficiency of the engine's operation. Manufactured to Honda's exact OEM specifications, it ensures seamless integration with existing parts, maintaining optimal performance and durability.. Key Features. Genuine OE