I am guessing that this hose that is just behind and to the right of the oil filter is a coolant hose. I am asking because it looks like it is starting to develop a tear. Nothing is leaking out of it but I would assume it needs to be changed. If it needs to be changed, how in the world would I do that? It seems quite difficult to access. Any advice or links? Thanks.

http://www.sr20forum.com/gallery/data/1297/medium/coolant_hose_2.JPG

Well, I have determined that it is a heater hose. I got underneath and determined that it is quite difficult to remove and replace without removing many other parts. Has anyone been able to do this without too much dificulty? Also, are there any other kinds of thinner or more flexible hoses I could use to replace it with since it is a tight space? Thanks.