Alternator for BMW 5 Series E34 (1987-1995)

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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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New Alternator - 140amp | BMW E36 E34 M50 M52 S50 S52
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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
Free Shipping on orders $49 and up
OEM Bosch Voltage Regulator (Bosch Alternator) - 12311726022 ...
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Bosch - Corporate Logo
T#:19326
Part#: 12311726022
In Stock at Vendor
$ 71.99

This product was last offered at the strikethrough price on
01-28-2026

$ 63.99 USD
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$ 63.99 USD
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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. A new set of contacts will be about 13mm in length. Anything less than 5mm and the voltage 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.

The carbon contacts can be replaced on their own but requires desoldering the old ones from the base and then soldering the new ones on. It may be easier to just replace the unit as a whole.

This is the OEM voltage regulator, made by Bosch or Hella. It's the one with the white base and fits most Bosch alternators from 1977-1995 (Valeo and other alternators look very different and have a black cover and base). This part number replaces the previous BMW part numbers - 12311271664, 12321279548, 12311722755, 12321711399 and Bosch part numbers 1197311021 and 1197311028.
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Genuine BMW Alternator Pulley - 66mm - M20 2.5L
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Genuine BMW - Corporate Logo
T#:19315
Part#: 12311288238
Ships in 1 day
5% off MSRP $ 109.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 103.99 USD
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5% off MSRP
$ 109.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 103.99 USD
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Genuine BMW Pulley - D=66mm

This item fits the following BMW Chassis:
E30 M3,E30,E34

Fits BMW Engines including:
M10,M20,S14


Bosch Alternator - 1993-1995 V8 - E34 530i/540i & E32 740i/740il ...
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Bosch - Corporate Logo
T#:1976
Part#: AL0742X
In Stock at Vendor
$ 475.99

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

$ 464.99 USD
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$ 464.99 USD
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Replacement Bosch alternator for the 1993-1995 V8 engine (M60), found in the E34 530i & 540i, and E32 740i/740iL (thru 1994). 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.

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.

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

This Bosch Alternator fits the following BMWs:
1994-1995 E34 5 Series V8 530i & 540i
1992-1995 E32 7 Series V8 740i & 740iL
1994-1995 E31 8 Series V8 840C/ 840i

Includes $65.00 core charge to be refunded on return of your rebuildable core.

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OEM Schaeffler Alternator Bearing - BMW E21 E30 E36 E12 E28 E34 E23 E...
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Schaeffler - Corporate Logo
T#:41965072
Part#: 6201-Z
Ships in 7 Business Days
$ 30.99 USD
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Offered by OEM Schaeffler, this bearing replaces BMW part number 12311739203, which is found in numerous BMW alternators manufactured prior to 1996. This bearing helps to stabilize the shaft of the alternator, allowing it to spin freely. If you are experiencing a loud squeaking or grinding noise from your alternator, there is a good chance one of the internal bearings has failed and needs to be replaced.
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Valeo New Alternator - 80 Amp - E34, E36
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Valeo - Corporate Logo
T#:377737
Part#: 12311744564
In Stock at Vendor
$ 549.99

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

$ 533.99 USD
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$ 533.99 USD
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Brand new unit with no core charge

Hitachi Voltage Regulator - BMW E31 E32 E34 E36
For vehicles with compact alternator
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Hitachi - Corporate Logo
T#:48850064
Part#: 12311747920
Ships in 6 Business Days
New Item
$ 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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Genuine BMW Alternator Brush Set
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Genuine BMW - Corporate Logo
T#:7133
Part#: 12311727756
Ships in 1 day
4% off MSRP $ 25.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 24.99 USD
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4% off MSRP
$ 25.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 24.99 USD
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Genuine BMW Carbon Brush Set

This item fits the following BMW Chassis:
E30 M3,E34 M5,E30,E34,E36

Fits BMW Engines including:
M10,M20,M30,M42,M50,M70,S14,S38,S70

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Genuine BMW Rubber Boot - 12311710514 - E34
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Genuine BMW - Corporate Logo
T#:7129
Part#: 12311710514
Ships in 1 day
5% off MSRP $ 21.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 20.99 USD
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5% off MSRP
$ 21.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 20.99 USD
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Genuine BMW Rubber Boot -
This item fits the following BMW Chassis:
E34

Fits BMW Engines including:
M20,M30,M50


Genuine BMW Alternator Fan
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Genuine BMW - Corporate Logo
T#:38896
Part#: 12311735306
Ships in 1 day
4% off MSRP $ 49.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 47.99 USD
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4% off MSRP
$ 49.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 47.99 USD
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Genuine BMW Fan Wheel

This item fits the following BMW Chassis:
E30 M3,E34 M5,E30,E34

Fits BMW Engines including:
M10,M20,M30,M42,S14,S38

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OEM Bosch Remanufactured Alternator - 140 amp -- E32 735i/iL E34 530i...
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Bosch - Corporate Logo
T#:224664
Part#: AL148X
In Stock
$ 322.99

This product was last offered at the strikethrough price on
01-12-2026

$ 302.99 USD
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$ 302.99 USD
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If your car has died on the side of the road from a dead battery and you notice flickering or low powered head lights, it's likely your alternator failing. To be sure you are getting a high quality part with a long life-span, choose this OEM Bosch Alternator. OEM replacement from BMW part number 12311466088 and 12311735706

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 $65.00 refundable core charge is included with this alternator. Upon receipt of your rebuildable alternator core, you will be refunded the core charge. 

This Bosch Alternator fits the following BMWs:
1989-1993 E34 BMW 535i
1988-1992 E32 BMW 735i 735il

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Intake Manifold - E34
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Genuine BMW - Corporate Logo
T#:14807
Part#: 12311735708
Special Order: No Guaranteed ETA
5% off MSRP $ 76.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 72.99 USD
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5% off MSRP
$ 76.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 72.99 USD
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Genuine BMW Intake Manifold -
This item fits the following BMW Chassis:
E34

Fits BMW Engines including:
M50



Genuine BMW Alternator Cooling Duct - E34 525i 535i
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Genuine BMW - Corporate Logo
T#:38902
Part#: 12311735709
Ships in 1 day
4% off MSRP $ 56.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 54.99 USD
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4% off MSRP
$ 56.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 54.99 USD
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Genuine BMW Rubber Boot -
This item fits the following BMW Chassis:
E34

Fits BMW Engines including:
M30,M50

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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Bosch Alternator - 80amp - E36, E36 M3, E34 (M50)
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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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Voltage Regulator (Bosch Alternator) - 12311747920 - E34,E36,E36 M3 ...
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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
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$ 210.99 USD
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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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Alternator / PS / AC Idler Nut
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Genuine BMW - Corporate Logo
T#:7139
Part#: 12317677914
In Stock
$ 15.24

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 15.23 USD
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$ 15.23 USD
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GENUINE BMW ENGINE ELECTRICAL IDLER 12317677914
Woodruff Key
4X5
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Genuine BMW - Corporate Logo
T#:28561
Part#: 07119951453
In Stock
$ 3.99 USD
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$ 3.99 USD
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Genuine BMW Woodruff Key
This item fits the following BMW Chassis:
E30 M3,E70 X5M,E71 X6M,E53 48IS,E30,E34,E36,E53 X5 X5,E63,E65,E70 X5,E71 X6,F01,F02,F06,F10,F12,F13,F15,F16

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Washer
10X5,3X1-200 Hv
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Genuine BMW - Corporate Logo
T#:215808
Part#: 07119904206
Ships in 1 day
$ 1.99 USD
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$ 1.99 USD
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Genuine BMW Washer - 07119904206

Connector - E32, E34
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Genuine BMW - Corporate Logo
T#:38905
Part#: 12311736110
Ships in 5 Business Days
7% off MSRP $ 44.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 41.99 USD
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7% off MSRP
$ 44.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 41.99 USD
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Genuine BMW Connector -
This item fits the following BMW Chassis:
E34

Fits BMW Engines including:
M60,M70


Set Mounting Parts - E32, E34
B+/D+
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Genuine BMW - Corporate Logo
T#:7132
Part#: 12311722985
Ships in 5 Business Days
5% off MSRP $ 55.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 52.99 USD
Free Shipping on orders $49 and up
5% off MSRP
$ 55.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 52.99 USD
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Genuine BMW Set Mounting Parts - B+/D+
This item fits the following BMW Chassis:
E34 M5,E34

Fits BMW Engines including:
M20,M30,S38


Condenser - E31, E32, E34
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Genuine BMW - Corporate Logo
T#:181023
Part#: 12311722989
Ships in 5 Business Days
4% off MSRP $ 26.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 25.99 USD
Free Shipping on orders $49 and up
4% off MSRP
$ 26.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 25.99 USD
Free Shipping on orders $49 and up


Genuine BMW Condenser
This item fits the following BMW Chassis:
E34 M5,E34

Fits BMW Engines including:
M30,M70,S38,S70

Intake Manifold - E34
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Genuine BMW - Corporate Logo
T#:38848
Part#: 12311718908
Ships in 5 Business Days
5% off MSRP $ 55.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 52.99 USD
Free Shipping on orders $49 and up
5% off MSRP
$ 55.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 52.99 USD
Free Shipping on orders $49 and up


Genuine BMW Intake Manifold -
This item fits the following BMW Chassis:
E34

Fits BMW Engines including:
M30

Compact Alternator - E34, E36
80A
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Genuine BMW - Corporate Logo
T#:174348
Part#: 12311744565
Ships in 5 Business Days
5% off MSRP $ 1,131.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 1,070.99 USD
5% off MSRP
$ 1,131.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 1,070.99 USD


Genuine BMW At-Compact Alternator - 80A
This item fits the following BMW Chassis:
E36 M3,E36

Fits BMW Engines including:
M50,M52,S50,S52



Remanufactured Alternator - 80 Amp
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Genuine BMW - Corporate Logo
T#:377921
Part#: 12311744565KT
Ships in 5 Business Days
$ 1,336.99

This product was last offered at the strikethrough price on
05-06-2026

$ 1,331.99 USD
$ 1,331.99 USD
Genuine BMW remanufactured alternator for E34 and E36 models with Inline-6 engines. 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. Includes a $200.00 refundable core charge
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Bosch Alternator - 115 Amp - E34 535i, E32 735i/IL
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Bosch - Corporate Logo
T#:224669
Part#: AL143X
Ships on Jun 29, 2026
$ 354.00 USD
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$ 354.00 USD
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115 amp Bosch alternator for many BMW M30 6 cylinder engines on E34 5 series and E32 7 series. 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. Can be used in place of bmw part number. 12311735704

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.

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

This Bosch Alternator fits the following BMWs:
1989-1993 E34 BMW 535i
1988-1992 E32 BMW 735i 735il
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Bosch Alternator - 1993 E34 525i & 525i Touring (1993 only) ...
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Bosch - Corporate Logo
T#:1675
Part#: AL0741X
Ships on Jun 29, 2026
$ 389.99 USD
Free Shipping on orders $49 and up

115 amp Bosch alternator for 1993 525i & 525i Touring (the E34 chassis). 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.

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.

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

This Bosch Alternator fits the following BMWs:
1993-1993 E34 5 Series 525i & 525i Touring (1993 model only)

Includes $123.00 core charge to be refunded on return of your rebuildable core.

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Bosch Alternator - E34 525i 1989-1990 (M20 Engine) - 140 amp ...
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Bosch - Corporate Logo
T#:1988
Part#: AL0154X
Ships on Jun 29, 2026
$ 409.99 USD
Free Shipping on orders $49 and up
A replacement 140 amp Bosch alternator for the 1989-1990 525i. 

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.

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

This Bosch alternator fits the following BMWs:
1989-1990  E34 5 Series  525i & 525i wagon
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Accessory Drive Belt Kit - E34, E83
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Ina - Corporate Logo
T#:42167237
Part#: FB0198K
Back Ordered
$ 145.99 USD
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Ideal for scheduled maintenance or as a preventive repair, the Accessory Drive Belt Kit offers dependable performance and peace of mind for BMW owners looking to maintain factory-quality operation and longevity
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