I believe that has the ZF gearbox and those are known for some valve body issues. Some of the other V8 guys will chime in but there are several transmission specialists on our forum. Just search valve body from within our forum and you should find your exact symptoms and discussions on repairs.

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• 2004 E53 X5 3.0 ZSP (4/04 build date) Jet Black exterior/Sand Beige interior
• 2002 E46 325i ZPP (2/02 build date) Alpine White exterior/Hell Beige interior

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