Sheid Diesel, (http://www.scheiddiesel.com/) can make new ones for you however you wish them. Lawson products sells the parts to make up your own if you are handy and able to silver solder. Also Thompson Diesel in both Tulsa, and OKC, OK may have, or can make them. These are usually 14mm Bosch standard fittings although some were 12mm. I've never looked for used so really am of no help there.