91301-ZV5-010 Pump Cover O-Ring - Overview. The 91301-ZV5-010 Pump Cover O-Ring is an essential rubber seal designed for Honda marine engine systems. It plays a vital role in sealing the pump cover to prevent water leakage and maintain pressure integrity within the pump housing. As an OEM component, it ensures seamless integration with existing parts, maintaining optimal performance and durability.. Key Features. Small rubber O-ring that provides a watertight seal for the pump cover assembly.. G