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BMW Electrical Sensors, Switches, & Relays

Electrical gremlins can be very frustrating. Luckily your BMW's electrical system is better than most, even if it's 25 years old. Here you will find electrical relays, sensors, switches, and modules for the engine, camshaft, and crankshaft. Our parts are OEM, Genuine BMW, or approved aftermarket brands that we have an excellent track record with. There is no middle ground with electrical parts - it either works perfectly or not. And there's nothing more frustrating than a new part that fails right out of the box. So it's important to choose quality replacement parts over a cheap but faulty piece.

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OEM Bosch Voltage Regulator - 180A - E82/88, E9X, E60/61 LCI, E70, E8...
2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
Bosch - Corporate Logo
T#:558831
Part#: 12317561939
In Stock
$ 61.91 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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New OEM Bosch Starter Motor - N52, N54, N55, up to 03/11
2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
Bosch - Corporate Logo
T#:394329
Part#: SR0492N
In Stock
$ 255.99

This product was last offered at the strikethrough price on
03-17-2026

$ 237.99 USD
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$ 237.99 USD
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If your car won't turn over, there is a good chance your starter is shot. Bosch's OEM starter is a high quality replacement that will give you peace of mind thanks to its long life-span. OEM replacement for the original BMW part # 12411312104 and 12411312130. This is a NEW, not used, component with no included core charge!

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!

We recommend replacing hardware when doing your starter, since the bolts are aluminum and threads become stretched: Genuine BMW aluminum starter hardware set 12410392577 

 

Used on a wide variety of models with the BMW N52, N54, and N55 engines, including: E9X, F01/02, F07/10, E8X, E70, E60/61, F25, F30, and Z4.

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OEM Bosch Mass Air Flow Sensor (MAF) -- N20 N26 S55 S63 B38 B46 Z4 ...
2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
Bosch - Corporate Logo
T#:389744
Part#: 13627602038
In Stock
$ 247.99

This product was last offered at the strikethrough price on
08-03-2026

$ 161.99 USD
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$ 161.99 USD
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The mass air flow sensor measures the amount of air flow to tell the computer how much fuel to add to the mixture. If the MAF sensor malfunctions, there could be too much or too little fuel added to the mixture.
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OEM Bosch Voltage Regulator (90amp/120amp) -- E46 E39 E53 Z3 ...
2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
Bosch - Corporate Logo
T#:373840
Part#: 12317559183
In Stock
$ 37.99

This product was last offered at the strikethrough price on
04-13-2026

$ 37.36 USD
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$ 37.36 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 # 12317559183 and 12317501752.

Cars that have oval or D shaped connector use BMW part # 12317515319

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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OEM Bosch Starter Motor -- E46 E39 E60 E61 E65 E66 E83 Z3 Z4 ...
2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat! - For M54 Engine
Bosch - Corporate Logo
T#:384364
Part#: 12412354693
In Stock
$ 269.99 USD
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$ 269.99 USD
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If your car won't turn over, there is a good chance your starter is shot. Bosch's OEM starter is a high quality replacement that will give you peace of mind thanks to its long life-span. OEM replacement for BMW part # 12412354693, 12412344242, 12412167996.

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!

For BMW's with the M54 engine with a production date from 09/2002.

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Bosch Starter Motor - E30 325e 325i 325is 325ix E34 525i
2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
Bosch - Corporate Logo
T#:2275
Part#: SR443X
Ships in 2 Business Days
$ 230.99 USD
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$ 230.99 USD
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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 genuine Bosch Starter motor fits the following BMWs:
1987-1991 E30 3 Series 325i 325is 325ix 325ic
1989-1987-1988 E30 3 Series 325e 325es 12/1986-1988
1989-1990 E34 5 Series 525i M20 engine only
1987-1988 E28 5 Series 528e 12/1986-1988

 

Includes $45 core charge to be refunded on return of your rebuildable core.

 

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OEM Bosch Alternator - E46 M3, Z3 S54
2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
Bosch - Corporate Logo
T#:370775
Part#: 12317831436
In Stock
$ 512.99

This product was last offered at the strikethrough price on
03-30-2026

$ 322.99 USD
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$ 322.99 USD
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A replacement Bosch alternator for the 2001-2006 M3. Bosch is an original equipment supplier to BMW, and is the finest and most recognized German brand of alternator available. The Original BMW alternator sells for over double! Buy only the best alternator for your BMW -- buy a Bosch alternator. This is an OEM replacement for BMW part # 12317831436.

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

This item fits the following BMWs:
2001-2006 E46 BMW M3, M3 Convertible
2001-2002 Z3 BMW M Roadster M Coupe

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Alternator Air Duct - E36 323i 325i 328i M3
2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
URO - Corporate Logo
T#:2099
Part#: 12311735915
Back Ordered
$ 30.99

This product was last offered at the strikethrough price on
06-22-2026

$ 22.99 USD
Free Shipping on orders $49 and up
$ 22.99 USD
Free Shipping on orders $49 and up
This is the alternator air duct that goes from the inlet scoop to the alternator.. It fits BMW E36 323is 323ic 325i 325is 325ic 328i 328ic 328is M3 1992-1998.

This item fits the following BMWs:
1992-1998 E36 BMW 323is 323ic 325i 325is 325ic 328i 328ic 328is M3
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Camshaft Position Sensor - S54, S62
2X Entries For Our G87 M2 Sweepstakes!
URO - Corporate Logo
T#:44461483
Part#: 13627796054
In Stock
$ 40.99 USD
Free Shipping on orders $49 and up
Provides dependable performance, reliability, and value in one essential component.

URO Manifold Absolute Pressure (MAP) Sensor - BMW N54 N20 N26 S55 S63...
2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
URO - Corporate Logo
T#:36032311
Part#: 13628644433
In Stock
$ 71.99 USD
Free Shipping on orders $49 and up
$ 71.99 USD
Free Shipping on orders $49 and up
The MAP sensor, or manifold absolute pressure sensor, works with the engine computer to set the fuel curve and give readings to the engine computer. If yours is faulty, it may cause improper running, rich or lean fuel curves, or other general performance issues. Replace yours with this unit to keep your engine running at full potential. For N54 applications, you will need adapter harness T#583821- This TMAP sensor is typically used in high-boost applications for the N54
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OEM Bosch Voltage Regulator (Bosch Alternator) - 12311726022 ...
2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
Bosch - Corporate Logo
T#:19326
Part#: 12311726022
In Stock at Vendor
$ 68.99

This product was last offered at the strikethrough price on
04-09-2026

$ 62.99 USD
Free Shipping on orders $49 and up
$ 62.99 USD
Free Shipping on orders $49 and up
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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Crankshaft Position Sensor
2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
URO - Corporate Logo
T#:37858379
Part#: 13627839138
In Stock
$ 22.43 USD
Free Shipping on orders $49 and up
The flywheel sensor monitors the rotational speed of the flywheel and transmits this data to the ECU/DME, which uses it to optimize engine performance. A faulty flywheel sensor can lead to rough running or prevent the engine from starting altogether.
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Integrated Power Supply Module
2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
URO - Corporate Logo
T#:37757285
Part#: 12638645514
In Stock
$ 198.09

This product was last offered at the strikethrough price on
06-10-2026

$ 169.99 USD
Free Shipping on orders $49 and up
$ 169.99 USD
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Located on top of the battery
Bosch Air Temperature Sensor - E31, E32, E34, E36, E38
2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
Bosch - Corporate Logo
T#:555413
Part#: 13621725323
In Stock
$ 44.99

This product was last offered at the strikethrough price on
03-09-2026

$ 34.33 USD
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$ 34.33 USD
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Located on the intake manifold or intake box
OEM Bosch Alternator AL0703N - 120A - E38 E39 E46 E53 Z3
2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
Bosch - Corporate Logo
T#:583735
Part#: 12317501690
In Stock
$ 526.99

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

$ 415.99 USD
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$ 415.99 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 headlights, 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. This is a brand new OEM replacement for BMW part # 12317501690.

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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DSC Pressure Sensor
2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
URO - Corporate Logo
T#:567281
Part#: 34521164458
In Stock
$ 152.99 USD
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$ 152.99 USD
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This sensor is attached to the brake master cylinder

Parking Aid Sensor
2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
URO - Corporate Logo
T#:37858371
Part#: 66206989068
Ships in 1 Business Day
$ 31.99 USD
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$ 31.99 USD
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This replacement PDC sensor is positioned behind the front and rear bumpers and serves as a direct replacement for any broken, missing, or faulty sensor.
URO - Corporate Logo
T#:49822552
Part#: 61146971370
In Stock
New Item
$ 91.99 USD
Free Shipping on orders $49 and up
Ensures the appropriate amount of power is sent to electrical vehicle components.

URO Positive Cable Battery Connection Pole
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URO - Corporate Logo
T#:42436713
Part#: 61129217031
In Stock
$ 130.99 USD
Free Shipping on orders $49 and up
If your BMW has been in an accident and the Battery Safety Terminal (BST) has been triggered, you'll need a new positive battery cable connection to restore power and get the vehicle running again.
OEM Bosch BMW Knock Sensor - M62 E39 E38 E31
2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
Bosch - Corporate Logo
T#:397564
Part#: 12141741648
Back Ordered
$ 64.99 USD
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$ 64.99 USD
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Knock sensors detect pings in the engine and adjust ignition timing to restore perfect operation. Faulty knock sensors will throw engine codes or even lead to engine damage. Replace your sensor with a reliable, high quality Bosch sensor to ensure proper engine ignition timing.

Bosch # 12141741648 OEM replacement for BMW part # 12141741648.

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 s  eupplied 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!

Fits the following vehicles:
1996-09/1999 E39 BMW 540i
1995-09/1999 E38 BMW 740i 740iL
1990-1999 E31 BMW 840Ci

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URO Camshaft Position Sensor - BMW E36 Z3 M42 M44
2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
URO - Corporate Logo
T#:591864
Part#: 12141743072
In Stock
$ 36.99 USD
Free Shipping on orders $49 and up

URO Camshaft Position Sensor - BMW E36 Z3 M42 M44

The URO Camshaft Position Sensor - BMW E36 Z3 M42 M44 is an essential component for precise engine timing and efficient performance. Also known as the pulse generator, this sensor mounts to the side of the cylinder head and detects the camshaft’s position to optimize fuel injection and ignition timing. A failing sensor can trigger engine fault codes, cause rough idling, misfires, or poor fuel economy. Replacing a faulty camshaft position sensor restores accurate timing, ensuring smooth operation and peak efficiency for your BMW E36, Z3, M42, or M44 engine.

  • Direct replacement for BMW E36, Z3, M42, and M44 engines
  • Detects camshaft position for precise engine timing
  • Helps optimize fuel injection and ignition performance
  • Eliminates rough idling, misfires, and poor fuel economy
  • Designed for durability and long-lasting performance
  • Restores smooth operation and prevents engine fault codes
  • OE-style fitment for easy installation
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URO Environmental Air Catalyst (EAC) Sensor - 17117537292
2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
URO - Corporate Logo
T#:28171552
Part#: 17117537292R
In Stock
$ 271.99 USD
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$ 271.99 USD
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Replacing your factory environmental air catalyst sensor can be quite a headache when it's integrated into the radiator, causing a 2AD8 trouble code. But fear not! URO Parts has a solution with their standalone replacement sensor, making this repair much more manageable and cost-effective.

Key Features:

Guaranteed Fitment: Designed to fit perfectly, ensuring compatibility with your vehicle. Direct OE Replacement: Restores your factory cooling fan sensor's functionality seamlessly. Plug-and-Play Installation: Easy to connect, saving you time and hassle during installation. High-Quality Construction: Crafted from durable materials to withstand the heat of the engine compartment and cooling system. Low Electrical Resistance: Alloy conductors reduce resistance for accurate sensor operation. Reliable and Long-Lasting: Tested for reliability and engineered for a long service life. If you're dealing with a "direct ozone reduction catalyst temperature gradient too low" SES code, upgrading to this high-quality sensor from URO Parts is the solution you need.

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Bosch Knock Sensor - E31, E32, E34, E38
2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
Bosch - Corporate Logo
T#:579188
Part#: 261231074
In Stock at Vendor
$ 111.99

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

$ 108.00 USD
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$ 108.00 USD
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Controls the timing and air/fuel mixture of your engine
OEM Bosch BMW Knock Sensor -- M62 S62 N62
2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
Bosch - Corporate Logo
T#:7266
Part#: 13627568421
Ships in 2 Business Days
$ 127.99

This product was last offered at the strikethrough price on
08-13-2026

$ 110.99 USD
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$ 110.99 USD
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Knock sensors detect pings in the engine and adjust ignition timing to restore perfect operation. Faulty knock sensors will throw engine codes or even lead to engine damage. Replace your sensor with a reliable, high quality Bosch sensor to ensure proper engine ignition timing.

Bosch # 13627568421 OEM replacement for BMW part # 13627568421, 12141709317, and 12141435502.

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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Bosch Alternator - 1993-1995 V8 - E34 530i/540i & E32 740i/740il ...
2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
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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Camshaft Position Sensor
2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
URO - Corporate Logo
T#:384156
Part#: 12141742185
Ships in 1 Business Day
$ 36.99 USD
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When this sensor fails, it will become impossible to start your car, leaving you stranded.
OEM Bosch Compact Alternator 120A - E39 M5
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Bosch - Corporate Logo
T#:375962
Part#: 12311407440KT
In Stock at Vendor
$ 830.99

This product was last offered at the strikethrough price on
04-10-2026

$ 427.99 USD
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$ 427.99 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. This is an OEM replacement for BMW part # 12311407440.

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 refundable $70.00 core charge must be applied to this alternator. Upon receipt of your rebuildable alternator core, you will be refunded the core charge.

This item fits the following BMWs: 
1999-2003 E39 BMW M5 
 

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OMP - Corporate Logo
T#:1614
Part#: EA-462
In Stock
$ 65.00 USD
Free Shipping
$ 65.00 USD
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OMP Battery Cut Off Switch / Kill Switch, for use in racecars as an emergency "kill switch", to depower the electrical system in the event of a crash or other emergency. This cut off switch is FIA approved, has 6 poles and alternator protection, as well as a removable key.
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OEM Bosch Remanufactured Alternator - AL0739X - 140amp -- E36 E34 ...
2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
Bosch - Corporate Logo
T#:371693
Part#: 12311744567
Ships on Sep 10, 2026
$ 453.99

This product was last offered at the strikethrough price on
07-25-2026

$ 420.99 USD
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$ 420.99 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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OEM Bosch Remanufactured Alternator - 120amp -- E46, Z4
2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
Bosch - Corporate Logo
T#:373254
Part#: 12317519620KT
In Stock
$ 380.99

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

$ 335.00 USD
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$ 335.00 USD
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Please check the part number on the alternator to ensure that you are ordering the correct part - This alternator has an oval connector on the back! 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. This is an OEM replacement for BMW part # 12317519620 & 12317519618. 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 refundable $91.00 core charge must be applied to this alternator. Upon receipt of your rebuildable alternator core, you will be refunded the core charge.
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URO Camshaft Position Sensor - E34 E36 | M20 M50 S50 Engines ...
2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
URO - Corporate Logo
T#:37925937
Part#: 12141740383
Ships in 1 Business Day
$ 33.99 USD
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URO Camshaft Position Sensor - E34 E36 | M20 M50 S50 Engines

The URO Camshaft Position Sensor - E34 E36 | M20 M50 S50 Engines is a high-quality replacement component designed to restore proper engine operation and eliminate trouble codes or check engine lights. Replacing a failed original camshaft position sensor instantly improves engine performance by ensuring accurate timing signals for optimal fuel injection and ignition. With a direct-fit OE replacement design, this sensor offers easy installation, allowing for a seamless plug-and-play setup. Manufactured using premium polymer and metal materials, it withstands high engine temperatures, ensuring reliable performance over the long term.

Key Benefits:

  • Restores engine performance: Replacing the faulty camshaft position sensor restores the proper operation of the engine and eliminates engine codes or check engine lights.
  • Direct-fit installation: The sensor is designed for easy, plug-and-play installation without the need for modifications.
  • Durable construction: Built with high-quality polymer and metal materials to resist intense engine heat and maintain reliable function.
  • Optimized operation: Alloy conductors minimize electrical resistance, ensuring precise operation at all engine RPMs.
  • Long-lasting reliability: Designed and tested for superior durability, ensuring long-term, reliable engine performance.
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Temperature / Pressure Sensor
2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
Bosch - Corporate Logo
T#:592040
Part#: 13627535069
In Stock
$ 80.99

This product was last offered at the strikethrough price on
03-17-2026

$ 54.99 USD
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$ 54.99 USD
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URO Eccentric Shaft Sensor for E53, E63, E70 - priced each
2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
URO - Corporate Logo
T#:37993418
Part#: 11377527017
Ships in 1 Business Day
$ 178.99 USD
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Two are needed per vehicle and are a frequent culprit behind rough idling and poor cold start performance.

MINI R56 Camshaft Sensor
2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
Bosch - Corporate Logo
T#:592045
Part#: 13627588095
In Stock
$ 34.99

This product was last offered at the strikethrough price on
03-16-2026

$ 28.99 USD
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$ 28.99 USD
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Ensure precise timing in your BMW engine with this Camshaft Gear Sensor, also known as the "pulse generator". Designed to mount on the side of the cylinder head, this sensor accurately detects camshaft timing. When an engine fault code related to timing emerges, replacement of this sensor becomes essential for optimal engine performance.

Benefits:

  • Ensures precise timing detection
  • Vital for engine fault code related to timing
  • Mounts to the side of the cylinder head
  • Essential for BMW engine performance
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OEM Bosch Remanufactured Alternator - 140 amp -- E32 735i/iL E34 530i...
2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
Bosch - Corporate Logo
T#:224664
Part#: AL148X
In Stock
$ 309.99

This product was last offered at the strikethrough price on
03-16-2026

$ 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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Ambient (Outside) Temperature Sensor
2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
URO - Corporate Logo
T#:376060
Part#: 65811383204
Ships in 1 Business Day
$ 32.99 USD
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$ 32.99 USD
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If your old, original sensor has failed, you will not get a correct temperature reading. Replace it and restore function to your BMW.


Bosch Alternator - 120 Amp - E31 E38 E39
2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
Bosch - Corporate Logo
T#:186964
Part#: AL0733X
Ships in 1 Business Day
$ 326.99

This product was last offered at the strikethrough price on
02-24-2026

$ 319.99 USD
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$ 319.99 USD
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120 amp Bosch alternator for many BMW M62 V8's with 7 Poly Groove Pulley. 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. 12311433266

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:
1997-1998 E39 5 Series 540i
1997-1998 E38 BMW 740i 740il
1996-1999 E31 BMW 840i 840ci

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

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URO Eccentric Shaft Sensor - 11377524879
2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
URO - Corporate Logo
T#:28171561
Part#: 11377524879
Ships in 1 Business Day
$ 174.99 USD
Free Shipping on orders $49 and up

The eccentric shaft sensor plays a vital role in controlling valvetronic timing and is often a common issue in BMW vehicles. If you've noticed difficult starts, reduced fuel economy, and overall engine power and performance issues, this component could be the culprit.

Key Features:

Guaranteed Fitment: Designed to fit perfectly, ensuring compatibility with your vehicle. Accurate Positioning: Provides precise shaft position control, even at high RPMs. Direct OE Replacement: Easy to install with its direct-fit design, saving time and effort. Low Electrical Resistance: Alloy connector conductors minimize resistance, ensuring accurate signal transmission. Upgrade to this quality replacement eccentric shaft sensor to restore optimal engine performance and address the symptoms associated with a faulty sensor.

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OEM Bosch Remanufactured 180 Amp Alternator - E82/88 E9X E60/61 N54 ...
2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
Bosch - Corporate Logo
T#:373812
Part#: 12317558220KT1
Ships in 1 Business Day
$ 1,029.99

This product was last offered at the strikethrough price on
04-10-2026

$ 749.99 USD
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$ 749.99 USD
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Replace your dead alternator with this new unit and make sure your battery is being charged properly. 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. Includes a $195.00 core charge to be refunded after we receive your refundable core.
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BMW E46 E39 E53 Z3 OEM Bosch Alternator - 120amp
2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
Bosch - Corporate Logo
T#:373543
Part#: 12317501599
In Stock at Vendor
$ 526.99

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

$ 511.99 USD
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$ 511.99 USD
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If you 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. This is an OEM replacement for BMW part # 12317501599.

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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Oil Level Sensor
2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
URO - Corporate Logo
T#:590151
Part#: 12617508003
Ships in 1 Business Day
$ 63.99 USD
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$ 63.99 USD
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Bosch Starter Motor - E30 325e 325es E28 528e E21 323i
2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
Bosch - Corporate Logo
T#:2278
Part#: SR43X
In Stock at Vendor
$ 258.99

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

$ 252.99 USD
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$ 252.99 USD
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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 genuine Bosch Starter fits the following BMWs:
1984-1985 E30 3 Series 323i 325e 325es
1982-12/1986 E28 5 Series 528e
1977-1983E21 3 Series 320/6 323i

 

Includes $45.00 core charge to be refunded on return of your rebuildable core.

 

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Bosch Alternator - 210 amp - Remanufactured - $125 refundable core ch...
2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
Bosch - Corporate Logo
T#:580223
Part#: AL9449X
In Stock at Vendor
$ 575.99 USD
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$ 575.99 USD
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OEM Bosch Remanufactured Alternator - AL9454X - BMW E9X M3 S65 ...
2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
Bosch - Corporate Logo
T#:639734
Part#: 12317837981BKT
In Stock at Vendor
$ 526.99

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

$ 513.99 USD
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$ 513.99 USD
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*Price includes a refundable $75 Core Charge* 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. 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! Bosch Part Numbers: AL9454X, 0986UR6290 Replaces the following BMW part numbers: 12317837981, 12317838656
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Oxygen Sensor - Front Position
2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
Bosch - Corporate Logo
T#:591947
Part#: 11788600992
In Stock at Vendor
$ 173.99

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

$ 158.99 USD
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$ 158.99 USD
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Ensure optimal engine performance in your Mini with this Bosch oxygen sensor. Designed to replace a malfunctioning sensor, this unit measures the amount of unburned fuel in the exhaust pipe, allowing for adjustments to fuel mapping for reduced emissions and improved fuel economy.

  • Restores engine performance and mileage
  • Easy installation for quick restoration of vehicle performance
  • Prevents sensor seizing with anti-seize application
  • Regular maintenance helps prevent gradual sensor failure
  • OEM supplier Bosch ensures quality and compatibility with Mini vehicles

Upgrade your Mini's engine efficiency and reduce emissions with this high-quality Bosch oxygen sensor.

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Bosch Remanufactured Starter Motor - BMW N55 S55 3.0L
2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
Bosch - Corporate Logo
T#:40004862
Part#: SR9521XKT
In Stock at Vendor
$ 465.99

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

$ 454.99 USD
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$ 454.99 USD
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The advertised price includes a refundable $78 core charge If your car won't turn over, there is a good chance your starter is shot. Bosch's OEM starter is a high quality replacement that will give you peace of mind thanks to its long life-span. 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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Alternator Pulley - E82 E90 E92 E60
We Price Match - Give Us A Call or Chat!
Ina - Corporate Logo
T#:19332
Part#: 12317570152
Ships in 1-2 days
$ 66.99 USD
Free Shipping on orders $49 and up
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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Starter Solenoid
2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
Bosch - Corporate Logo
T#:596910
Part#: 12411726039
Ships in 1-2 days
$ 95.94 USD
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$ 95.94 USD
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Replacement Starter Solenoid from Bosch


Bosch New Starter Motor - E84, F30, F31, F32, F34
2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
Bosch - Corporate Logo
T#:639189
Part#: 12417638195
Ships in 3 Business Days
$ 324.99

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

$ 314.99 USD
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$ 314.99 USD
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OEM Bosch Remanufactured Starter - E30 E34 E46 E39 Z3
2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
Bosch - Corporate Logo
T#:373255
Part#: 12417578684KT
Ships in 5 Business Days
$ 307.99

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

$ 300.99 USD
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$ 300.99 USD
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Includes a $71.50 core charge to be refunded after we receive your refundable core If your car won't turn over, there is a good chance your starter is shot. Bosch's OEM starter is a high-quality replacement that will give you peace of mind thanks to its long life-span. 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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