I just had to replace my valve cover gasket recently, as I was losing oil into the cylinder 1 spark plug tube slowly. The thing was completely petrified when I took it out and just cracked apart. While I was getting to it, I found that both hoses that ran from the valve cover to the throttle body, ones the PCV hose, the other I’m not sure, were in pretty bad shape. Both of them have pretty cracked ends and one of them has a crack all the way up past the clip. I want to replace them before the problem progresses, since I accidentally left the PCV hose off when reassembling the car and it wouldn’t run. I’m struggling to find what the part numbers are, or where to find them. It doesn’t help that I’m not sure what the second tube is (the one that’s not the PCV hose). If someone knows where I can find these for a reasonable price it would be greatly appreciated.
I think you're talking about the two largish-diameter hoses, one between the manifold and the PCV valve, one between the throttle body and the valve cover? Those are both part of the positive crankcase ventilation system, as seen here. The one going straight to the valve cover (not the PCV valve) you might call the breather hose, though Toyota just calls them ventilation hoses no. 1 and no. 2. I think they are the 12261- and 12262- numbers here: https://www.toyodiy.com/parts/p_U_2003_TOYOTA_PRIUS_NHW11L-AEEEBA_1201.html
Oh thats a big help! Unfortunately those parts are.... quite expensive for what they are but having part numbers might help me in finding aftermarket parts. Or I'm sure that I can get my own hoses and cut to length if need be.
