16073-ZY3-000 O-Ring - Overview. The 16073-ZY3-000 O-Ring is a premium sealing component used in Honda marine engine systems. It functions primarily to create a watertight and oil-tight seal between mating engine parts, ensuring that fluids such as oil and water do not leak, thus maintaining the integrity and reliability of your marine engine. As a genuine Honda part, it ensures seamless integration with existing parts, maintaining optimal performance and durability.. Key Features. Precisely eng