2000 BMW Z3 2.8 Roadster (Engine: M52) Before selling this aternator, please verify the OE part number off the unit. If it reads: 0 123 515 023 - the AL 0733x is correct. However, should the number read: 0 123 515 022 see AL0738x which is 120 Amp. Neither part is interchange if originally equipped with Valeo.