I think you have the wrong part number. The part number you are referencing is for the fuel vent. The hose you need is s51-16. I replaced mine 5 years ago and purchased from these guys
https://aircrafthosestore.com/
on another note, i replaced my fuel gauges with cies last year and went through a lengthy process making it right. Make sure the ones you get are oriented the same as your OEM including the arm lengths. If they send you the arms that go left to right you will have inaccurate results. I linked mine to a aerospace logic gauge and am quite satisfied with the results. Feel free to call if you have any questions. 215-260-6553. J