The hose leaving the bottom of my expansion tank has sprung a big leak. RealOEM and the usual parts distributers show a 3 way line connecting expansion tank to the thermostat housing and the heater. That's not what I'm seeing. I've got a hose that goes from E-tank down under the air filter and then bends back up under the right side of the engine (maybe goes into the thermostat housing). Etank is on the left of this image and radiator is at the top. Can anyone help me find the part number for the hose? This is a 1989 325iX. Thanks!
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