For what its worth, Ill share my recent experience.(95 Pantera II)The kit replaces the hose only from the fuel selector to the engine cowling. (with all necessary hardware)My boat has two fuel tanks. So I have a large gas line coming from each tank and going to either side of the fuel selector. In addition, I have a large hose that appears to connect both gas tanks directly. I have heard this called the “balance hose”, probably for pressure equilization….but Im no mechanic.My hose from the tanks to the fuel selector were labeled “A1” and then read 1994. I told parts about this and they were convinced that these hoses were good. The only hose in question is the one that the engine manufacturer installed or provided at the time of engine installation.It took longer to get the old hose off than to put the new on. It was a breeze. (Granted you have non polar weather and fingers that arent frozen).Good luck.