what is the cfm rating on the factory aux electric fan of a W126 300SD? i'm going to be replacing it, and i'm wondering if i can get a better one for cheaper by going after-market. Thanks
Ryan

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83 300SD.......sold
96 integra SE....sold
99 a4 quattro....sold
2001 IS300.......sold
2002 330i.........current.
2004 highlander limited....current.