Attwood fuel tank fittings and hose fittings are suitable for use with leaded, unleaded, ethanol blended and alcohol-blended fuels. Unless otherwise specified, threaded fittings have 1/4 in. male NPT threads, barbed fittings fit 3/8 in. I.D. hose. Clamps are not included. Use fuel compatible thread sealant on all threads. Molded Acetal. For use with Attwood 8873-6. OEM Equivalent Part No.: Mercury: 22-13563Q7. Fits: 1265-850750. What is the Attwood difference, Value and ingenuity. For more than 100-years Attwood has been proud to serve the parts and accessory needs of the marine industry. We have partnered with you to design, manufacture, test, and distribute a complete line of products that have been a part of your tradition, and we thank you for this opportunity.