So I have what I believe a line leaking that goes from what I understand to be the transmission gear cooler?? on the passenger side under the manifold, it heads to the driver side and up front it looks like.. it’s dark out and difficult to tell exactly where it goes but I can’t seem to tell exactly what the line would be called, and how many lines there are total because I would like to replace them all at once. I didn’t know if that tube is a cooler and has another cooler up front or if it runs power steering? I’m at a loss and any help would be much appreciated seeing how I need to get this truck back on the road. I’m not sure if it’s in my bio but it’s a 99 2500 with a 01 motor and trans

Ok so here’s what I’ve come up with, B61050, 624-991 and here’s where it get dicey 624352 which is for a 95 that has a check valve that needs to be removed? From looking at pictures of it I dont see it is it in the rubber hose part of it or something I’m overlooking?