Alternator for BMW 3 Series E91 (2006-2012)

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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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Bosch - Corporate Logo
T#:558831
Part#: 12317561939
In Stock
Sale - Save 5% $ 61.30
$ 58.23 USD
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Sale - Save 5% $ 61.30
$ 58.23 USD
Free Shipping on orders $49 and up

Ensure the correct voltage is being sent to/from the alternator, keep you electrical system safe from excessive voltage peaks that could cause damage to sensitive electronics and blow out fuses. Bosch's high quality unit will give you peace of mind knowing the electrical system will be safe and the voltage will remain steady. OEM replacement for BMW part # 12317561939

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!

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Rein Alternator Mounting Screw Set
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Rein - Corporate Logo
T#:14795
Part#: 12310392568
In Stock
$ 23.99 USD
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BMW Set Of Alu. Screws Generator -
This item fits the following BMW Chassis:
E70 X5,E82,E83 X3,E85,E86,E89 Z4,E90,E92,E93,F10,F25 X3

Fits BMW Engines including:
N51,N52,N52N

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OEM Valeo Alternator - 185 amp
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Valeo - Corporate Logo
T#:376244
Part#: 12317525376
Ships in 1 Business Day
$ 598.86 USD
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$ 598.86 USD
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The alternator in your vehicle keeps the battery at full charge when your engine is running. Because all of your electronic systems run off of this small piece, it's important that it is operational. If your lights are dim while driving or your battery dies within minutes of starting your car, it's time for a new alternator.

This is a NEW alternator from the OEM manufacturer, Valeo. No core charge applies. Valeo is an OEM manufacturer for many BMW alternators - save money by buying the same alternator in a different box!

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Alternator Pulley - E82 E90 E92 E60
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Ina - Corporate Logo
T#:19332
Part#: 12317570152
Ships in 1 day
$ 63.99 USD
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This OEM alternator pulley has a ratcheting mechanism inside that can wear out, causing a rattling sound. This mechanism allows the alternator to freewheel to a degree. This is only for the Valeo brand alternator/

This item fits the following BMWs:
2008+ E82 BMW 128i with N51 engine
2006-2007 E90 BMW 325i 325xi 330i 330xi - Sedan
2006-2007 E90 BMW 328i 328xi - Sedan with N51 engine
2006-2007 E91 BMW 325xi - Wagon
2007-2007 E92 BMW 328i 328xi 328i xDrive - Coupe with N51 engine
2006-2007 E60 BMW 525i 525xi 530i 530xi
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Genuine BMW - Corporate Logo
T#:39011
Part#: 12317561939
Ships Jul 7, 2025
Sale - Save 3% $ 184.99
$ 179.18 USD
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Sale - Save 3% $ 184.99
$ 179.18 USD
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Genuine BMW Voltage Regulator - 180A / Bosch
This item fits the following BMW Chassis:
E82 1M Coupe,E70 X5 X5,E82,E83 X3,E90,E92,E93

Fits BMW Engines including:
N51,N52N,N54,N54T

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Genuine BMW - Corporate Logo
T#:7068780
Part#: 12317521178KT
Ships Jul 1, 2025
Sale - Save 3% $ 1,107.99
$ 1,074.05 USD
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Sale - Save 3% $ 1,107.99
$ 1,074.05 USD
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If your alternator fails, you will find yourself stranded rather quickly. Symptoms of a failing alternator include dimming lights when stopping, and bogging accessories when running A/C, stereo or window switches. Be sure to replace your alternator before it's too late. Price includes a refundable $275.28 core charge
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Bosch - Corporate Logo
T#:384253
Part#: 12317551256KT
Ships Jul 15, 2025
Sale - Save 4% $ 587.99
$ 567.13 USD
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Sale - Save 4% $ 587.99
$ 567.13 USD
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This is a OEM Bosch remanufactured 180 amp alternator. BMW Alternators are built especially for extremes of heat, cold and high demand. Your BMW deserves nothing less than the best, which is why an OEM Bosch Alternator is the best option. BMW alternators are built to last using the highest quality materials and the most technologically advanced processes. All alternator parts are 100% factory tested prior to and during remanufacturing to assure that they meet or exceed original equipment specifications. And every alternator is fully load tested to guarantee compliance with BMW's strict performance specifications. 

A $84 core charge is included in the price. Upon receipt of your rebuildable alternator core, you will be refunded the core charge.  

This item fits the following BMWs:  
E60 BMW 528i/xi
E82/88 BMW 128i
E9X BMW 328i/xi
E70 BMW X5 N52 3.0L (without Adaptive Drive and Four-Zone Climate Control)
E83 BMW X3 N52 3.0L
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Alternator Pulley - Valeo Alternator only - URO
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URO - Corporate Logo
T#:578905
Part#: 12317516105U
Back Ordered
Sale - Save 5% $ 32.99
$ 31.43 USD
Free Shipping on orders $49 and up
Sale - Save 5% $ 32.99
$ 31.43 USD
Free Shipping on orders $49 and up
The solution to a noisy, failing pulley