I'm replacing part number #13 from the diagram below on my 07/91 cabrio (BMW par #11531722743). I did the same thing on my 10/88 touring last year and this hose connected directly to one of the heater tubes coming through the firewall. On the cabrio, there is a plastic T-fitting about 6" from the firewall connection, with a smaller hose branching off the T and going down between the head and firewall. Buried in the same location and very difficult to see under the wire loom is something that looks like a water valve. Neither of these exist on the touring and I can't find them on realOEM. Can anyone help me figure out what there are and their purpose? I can try to get pics if needed. Thanks, Cory
engine cooling hoses diagram by cory58f5, on Flickr
engine cooling hoses diagram by cory58f5, on Flickr
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