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PLEASE NOTE: The AE column indicates availability. If 'A' appears in the column, it means the part is interchangeable with the part on the following line. If 'E' appears, it means the part is No Longer Available! If both letters 'AE' are shown , both conditions apply. If what you need isn't available from BMW, don’t despair! Alternatives may exist – CONTACT us!

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Nr Part Number Description Price Per Unit Qty
01 07 11 9906431 Fillister head screw $1.35 Add to Cart
02 07 11 9932098 WAVE WASHER $1.17 Add to Cart
03 12 32 1350052 Voltage regulator $59.19 Add to Cart
04 12 32 1352472 Holder More Info
06 07 11 9920057 Fillister-head screw $2.22 Add to Cart
07 12 31 1244063 DIODE ASSY More Info
While diode board failure may be the leading cause of charging system problems, it's only ONE of the faults that could be running you down. The alternator rotor, stator, voltage regulator, battery, and wiring also need to be checked! Proper, accurate diagnosis is the ONLY way to get to the bottom of it. (HINT: we can't do it for you over the phone.) Get a good manual and do it yourself (Clymer or Haynes - we sell 'em!) or go to a competent mechanic. Do it right; you'll SAVE in the long run.
Step ONE to end Airhead electrical system hassles is to install a robust, reliable Thunderchild Diode Board. Here it is. Superior technology for less money! Install. Ride.
$79.95 Add to Cart
11 12 32 1243178 Wiring set $12.97 Add to Cart

Parts illustrated but NOT listed or parts noted with this symbol may be available! Click Here for full details.

If parts illustrated in a diagram are MISSING from the listing, OR… they are noted with this symbol it means one of the following:

a) BMW considers the part obsolete or no longer available.

b) The part may not fit the specific model you are searching but fits a similar model that shares the same illustration.

c) There is simply an error in the Microfiche (Yes, though this is BMW’s official Parts Microfiche, there are occasionally errors or omissions!)

In any case, if you need a part that you can’t find here, contact us! It’s likely that the part IS AVAILABLE from Bob's BMW. Most of the time these are the correct, genuine BMW parts that we regularly keep in stock. When original parts are no longer available, as can happen with older models, Bob’s has top quality replacements and reproductions in stock. And if the part you need isn’t currently in stock, we have many reliable sources in Europe, the US, and around the globe that we can tap to fill your request.

It’s what we do! Since 1981 Bob’s has been making it easy for you to get your parts – the right parts – every time.

Please contact us directly by email or phone: 301-497-8949 x 504