do you need the exact part; for ccvent you can also easily use a hose, has to be compatible with oil, etc. get thick hose, not that thin vent stuff, reinforced by nylon or similar would fit on and work well, the breathing flange is the only other thing. i found 1 (breather hose) for an ahu, same, from block to the valve cover top thingiie, they can crack after so long, hose prob cheaper to replace 2x that 1 stock hose your looking at.