83 240d with no climate control has leak at the evaporator. The evaporator housing number seems to be required to find the exact evaporator. Not even the dealer can tell me where to find this illusive number. I have had all accessible panels off, radio out, ducts off and no number to be found. One parts place here in Charlotte tells me that it an aftermarket system but it sure does not look like one to me. Fastlane has both parts but needs this number.