16030-ZX2-003 Pump Unit Set A - Overview. The 16030-ZX2-003 Pump Unit Set A is a genuine OEM replacement fuel pump assembly that plays a critical role in Honda marine engine systems. It supports the fuel delivery system, ensuring reliable operation and optimal engine performance. Designed to meet exact factory specifications, this pump unit provides seamless integration with existing parts, maintaining durability and efficiency critical for marine conditions.. Key Features. OEM fuel pump assembl