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Old 05-27-2014, 11:16 PM
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I purchased a Behr which is an OEM manufacturer, but I believe Siemens is the supplier to BMW for the Aux Fan for our X. I would stay away from the made in China fan. The fan is not just a dc motor, but it is also the speed controller for the fan. The fan receives a digital modulate pulse from the DME and base on the pulse it know how fast to run the fan.
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