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  1. E39 (1997 - 2003)
    Hello I just did a alternator replacement on my 01 540i but couldn't find many options on the alternator. Since it's a liquid cooled alternator I got the standard 150amp one. Its already in and the car is running again problem is I have 7 Optima batteries installed in the car. I have a huge...
  2. E60 / E61 (2004 - 2010)
    Could I please get some help with an alternator replacement? Both the dealer and an independent mechanic have identified the alternator as the source of a "growling" noise. I can hear high-frequency bearing noises using a stethoscope but have not been able to pinpoint the growling personally...
  3. E46 (1999 - 2006)
    After upgrading all the pieces of my Bimmer's stereo and putting a 15" Kicker in the trunk running 1200 watts... I was having some amp cutouts at high volume. So, what do we do? Well, we have to upgrade the alternator you know! The stock alternator is 140 Amp... I went ahead and bought a 200 Amp...
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