17500-ZV4-A21 Fuel Tank Assembly - Overview. The 17500-ZV4-A21 Fuel Tank Assembly is an essential component of the Honda marine fuel system designed to safely store and supply fuel to marine engines. It plays a crucial role in maintaining efficient fuel delivery and overall engine performance to ensure reliable operation on the water. As a genuine Honda marine part, it ensures seamless integration with existing parts, maintaining optimal performance and durability.. Key Features. OEM genuine Honda Fuel Tank Assembly designed specifically for marine engine application.. Plastic construction with a 12-liter (3-gallon) capacity compliant with EPA/CARB standards.. Includes a quick disconnect for the fuel line and a float gauge for fuel level monitoring.. Dimensions approximately 14.78" L x 10.52" W x 9.26" H, weighing about 4.55 lbs for easy handling.. Designed to match factory specifications, ensuring exact fit, function, and tolerance.. Integrates cleanly with existing hardware, seals, a