Airlift suspensions hose leaks
 

There's a hole on the air hose on my passenger side, is there a way I can fix it, or does it really need to be replaced??

Simple answer, replace it. How did a hole form there?

Im tryna fix it instead of replacing it. And i thnk theres a cut from something

It would probably be cheaper just to replace the whole line, but if you just really really didnt want to do that, buy two straight couplers and a small section of hose and patch it. Keep in mind, that would probably be more expensive and MUCH more prone to more leaks. More connectors = more leaks.