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Alternator

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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New Alternator - 140amp | BMW E36 E34 M50 M52 S50 S52
New Alternator - 140amp | BMW E36 E34 M50 M52 S50 S52
Bavarian Autosport - Corporate Logo
T#:25042544
Part#: 12311744567
In Stock
Sale - Save 15% $ 219.99

This product was last offered at the strikethrough price on
05-03-2026

$ 186.99 USD
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Sale - Save 15%
$ 219.99

This product was last offered at the strikethrough price on
05-03-2026

$ 186.99 USD
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New Alternator - 180 Amp
New Alternator - 180 Amp
Bavarian Autosport - Corporate Logo
T#:26438187
Part#: 12317558220
In Stock
Sale - Save 10% $ 294.99

This product was last offered at the strikethrough price on
06-30-2026

$ 265.49 USD
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Sale - Save 10%
$ 294.99

This product was last offered at the strikethrough price on
06-30-2026

$ 265.49 USD
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Alternator - 180amp
Alternator - 180amp
Bavarian Autosport - Corporate Logo
T#:26438185
Part#: 12317837981
In Stock
Sale - Save 15% $ 304.99

This product was last offered at the strikethrough price on
05-03-2026

$ 259.24 USD
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Sale - Save 15%
$ 304.99

This product was last offered at the strikethrough price on
05-03-2026

$ 259.24 USD
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New Alternator - 120A
New Alternator - 120A
Bavarian Autosport - Corporate Logo
T#:25042543
Part#: 12317501690
In Stock
Sale - Save 20% $ 211.99

This product was last offered at the strikethrough price on
05-03-2026

$ 169.59 USD
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Sale - Save 20%
$ 211.99

This product was last offered at the strikethrough price on
05-03-2026

$ 169.59 USD
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Alternator - 120amp
Alternator - 120amp
Bavarian Autosport - Corporate Logo
T#:25042542
Part#: 12317831436
Ships on Sep 29, 2026
Sale - Save 20% $ 222.99

This product was last offered at the strikethrough price on
05-03-2026

$ 178.39 USD
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Sale - Save 20%
$ 222.99

This product was last offered at the strikethrough price on
05-03-2026

$ 178.39 USD
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Hitachi Voltage Regulator - BMW E31 E32 E34 E36
Hitachi Voltage Regulator - BMW E31 E32 E34 E36
Hitachi - Corporate Logo
T#:48850064
Part#: 12311747920
Ships in 7 Business Days
$ 37.99 USD
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$ 37.99 USD
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This voltage regulator is a crucial component that controls the alternator's output, preventing overcharging by adjusting the current to maintain a safe range of vehicle voltage, thereby protecting the battery and electrical system. Symptoms of failure include dim lights, battery warnings, or a dead battery, often requiring replacement, which can be internal or external to the alternator.
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Voltage Regulator
Voltage Regulator
Beru - Corporate Logo
T#:596879
Part#: 12321350052
In Stock at Vendor
$ 41.99

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

$ 40.99 USD
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$ 40.99 USD
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If you are having issues with voltage peaking, lights fading in and out as your driving, or your battery keeps dying despite the car running, It could be the result of a faulty voltage regulator. Voltage regulators control the amount of power coming from the alternator.
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Hitachi Voltage Regulator - BMW E88 N52
Hitachi Voltage Regulator - BMW E88 N52
Hitachi - Corporate Logo
T#:48815477
Part#: 12317550469
Ships in 7 Business Days
$ 79.99 USD
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$ 79.99 USD
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Supplies power to your car's electronics and recharges the battery.

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