Bosch Alternator for BMW E36 (1992-1998) M3

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The alternator keeps the battery in a constant state of charge anytime the engine is running. If your lights are dimming or you hear excessive bearing noise around the alternator, chances are that it's time for a replacement.
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OEM Bosch Remanufactured Alternator - AL0739X - 140amp -- E36 E34 ...
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Bosch - Corporate Logo
T#:371693
Part#: 12311744567
In Stock
$ 453.99 USD
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$ 453.99 USD
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If your headlights or interior are flickering or dimming while driving, there is a good chance your alternator is dying. This high quality Bosch replacement will have your electrical system back in top shape. OEM replacement for 12311744567 and 12311738352.

Bosch is one of the largest OEM producers of Genuine BMW and aftermarket parts in the world, providing parts for almost every major automotive manufacturer. Bosch has likely supplied many of the original electrical (and mechanical) parts for your BMW. Thanks to their quality, high durability, and reliability, you should expect a long service life from Bosch products.

As a leading source of high performance BMW parts and accessories since 1993, we at Turner Motorsport are honored to be the go-to supplier for tens of thousands of enthusiasts the world over. With over two decades of parts, service, and racing experience under our belt, we provide only quality performance and replacement parts.  All of our performance parts are those we would (and do!) install and run on our own cars, as well as replacement parts that are Genuine BMW or from OEM manufacturers. We only offer parts we know you can trust to perform!

A $80.00 refundable core charge is applied to this alternator. Upon receipt of your rebuildable alternator core, you will be refunded the core charge. 

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Voltage Regulator (Bosch Alternator) - 12311747920 - E34,E36,E36 M3 ...
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
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Bosch - Corporate Logo
T#:38940
Part#: 12311747920
Back Ordered
$ 217.00

This product was last offered at the strikethrough price on
05-07-2026

$ 210.99 USD
Free Shipping
$ 210.99 USD
Free Shipping
This is the voltage regulator found on the back of the alternator. It's a normal wear item and the contacts are the first thing to check if you believe the alternator is not charging the battery (lights flickering or dim, battery light on in the dash, the engine quits without warning, or other electrical failures). The voltage regulator manages the voltage flowing through the car, especially to and from the battery. There are two carbon contacts on the regulator that control the magnetic field when the alternator is spinning and these contacts wear over time. There is a wear mark on the contacts and if the tip is within 3mm of this wear mark the regulator should be replaced, regardless if that is the cause of your electrical problems or not. Most older mechanics will tell you to keep a spare regulator in your toolbox.

Bosch is one of the largest OEM producers of Genuine BMW and aftermarket parts in the world, providing parts for almost every major automotive manufacturer. Bosch has likely supplied many of the original electrical (and mechanical) parts for your BMW. Thanks to their exacting assembly process and high level of durability you can expect a long service life from all Bosch products.

This is the OEM Bosch voltage regulator and will only fit Bosch alternators.
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Bosch Alternator - 80amp - E36, E36 M3, E34 (M50)
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
Bosch - Corporate Logo
T#:360361
Part#: AL0749X-COREKT
Back Ordered
$ 435.99

This product was last offered at the strikethrough price on
05-07-2026

$ 424.99 USD
$ 424.99 USD
Replacement 80 amp Bosch alternator for the M50, M52, S50 and S52 engine, found in many BMW's between 1992 1999. Bosch is an original equipment supplier to BMW, and is the finest and most recognized German brand of alternator available. Buy only the best alternator for your BMW -- buy a Bosch alternator. Price includes $50 core charge
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