What size is the hose from the rack to reservoir?

 

If its the one I'm thinking, I think its 5/8 but don't quote me on that. I had a hole cut into mine from the serpentine belt and just patched it using a 3/8's line cut down the middle and clamping it on.

Edit: Just never got around to getting it replaced, I patched it on track day but have ran it two months since without any issues or leaks.

 

I think the 5/8 hose is the pump to reservoir hose, i've got some extra 5/8 laying around and its bigger than that hose.