The answer is simple if you know it. I'm not sure so it's probably better to ask. Rotax calls it "bent socket 80 degrees." It's the hose fitting on the head from the expansion tank. My question is can the neck be clocked to make a more gentle turn? I have one hose that makes an "S". If I can adjust the neck to the left maybe 30 degrees or so the hose would make a more natural single curve. Make sense?