I'm using a 150a from an 02 CLK430. P/n 010-154-29-02. You have to reclock it 90 degrees so that the terminals are oriented properly for the om606, then it bolts right up. Also added the clutched pulley. The clutched pulley is available under a VW part number for about 1/2 price, I can look it up if interested. If you're buying a used alternator, throw a fresh voltage regulator into it before installing. I would also replace the rear bearing, as it's super easy to do, and you have to open the alt anyhow to reclock it.

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'98 E300 turbodiesel