I ordered it from Amazon to connect my new attwood fuel line. The diameter was 3/8 inch. I purchased my motor used and the fuel line that came with it was 1/4 inch. I am not sure if I can post link here, but you can search for "Attwood suzuki fuel line fitting" 3/8 on Amazon. It is $6.99. I am not sure if this is what you are looking for.