Review on DB Electrical ABO0234 Alternator for BMW 2.2L/2.5L/3.0L - Compatible/Replacement with 320/325/330/525/530/X5/Z3 - 2001-2006 Models - Part Numbers: 12-31-7-501-595 & 12-31-7-501-597 - Product Code: 400-24096 by Greg Quinit

Fits straight and works great. Like most of the other reviewers, I've only had it a few months, but I'm very satisfied. The best price on the web. This is the 120A model that seems to be the most common for the 3.0L X5, although I believe some versions used 90A and 140A. I assume 90A is included in some 3 series with the same engine and 140A is assumed on X5s with heated seats. Definitely a pretty easy DIY install in 1-2 hours after removing all the air intakes.