16701-921-000 Filter Body - Overview. The 16701-921-000 Filter Body is a vital component within Honda marine engine systems. This part supports the fuel filtration system by housing the fuel filter, ensuring clean fuel delivery to the engine. Essential for maintaining engine efficiency and reliability, it ensures seamless integration with existing parts, maintaining optimal performance and durability.. Key Features. Supports the fuel filtration system by securely housing the fuel filter.. Genuin