90651-MAH-000 Fuel Tube Clamp - Overview. The 90651-MAH-000 Fuel Tube Clamp is a critical component in Honda marine engine systems. It secures the fuel tube firmly in place, preventing leaks and ensuring a reliable, consistent fuel flow essential for optimal engine operation. Designed specifically for Honda, it ensures seamless integration with existing parts, maintaining optimal performance and durability.. Key Features. Compact and durable metal clamp designed to secure fuel tubes within the f