BMW Electrical Sensors, Switches, & Relays for BMW 3 Series E93 (2007-2013)

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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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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
For vehicles with production date up to 03/2011
Bosch - Corporate Logo
T#:394329
Part#: SR0492N
In Stock
$ 249.17

This product was last offered at the strikethrough price on
08-14-2026

$ 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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Rein Alternator Mounting Screw Set
2X Entries Into Our F80 M3 Sweepstakes
Rein - Corporate Logo
T#:14795
Part#: 12310392568
In Stock
$ 20.99 USD
Free Shipping on orders $49 and up


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 Bosch Remanufactured Starter -- N52 N54 N55 3.0L
For vehicles with production date up to 03/2011
Bosch - Corporate Logo
T#:377503
Part#: 12412344243KT1
In Stock
$ 244.00

This product was last offered at the strikethrough price on
08-24-2026

$ 229.00 USD
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$ 229.00 USD
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If your starter has died and your car will no longer turner over, Bosch's replacement unit is the perfect high quality replacement. OEM replacement for BMW part # 12412354701, 12412344243, and 12417526236.

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!

Includes a $65 core charge.

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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

$ 704.99 USD
Free Shipping
$ 704.99 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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Bosch - Corporate Logo
T#:639734
Part#: 12317837981BKT
Ships in 1 Business Day
$ 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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MTC - Corporate Logo
T#:583467
Part#: 61129217031
Back Ordered
$ 138.99 USD
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$ 138.99 USD
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If your BMW has been in an accident in which the Battery Safety Terminal has been tripped you will need a new positive cable connection pole in order to restart the vehicle.
Bosch - Corporate Logo
T#:384253
Part#: 12317551256KT
Ships on Oct 29, 2026
$ 661.99

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

$ 629.99 USD
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$ 629.99 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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Oil Pressure Switch (fits most BMWs)
2X Entries Into Our F80 M3 Sweepstakes
Rein - Corporate Logo
T#:363
Part#: 12617568480
In Stock
$ 11.99

This product was last offered at the strikethrough price on
04-21-2026

$ 7.39 USD
Free Shipping on orders $49 and up
$ 7.39 USD
Free Shipping on orders $49 and up
Having your oil pressure light come on can mean very serious problems. Or it could just be this switch that fails several times over a car's lifespan. By no means should you ignore the warning light but replacing this sensor could be the actual culprit. The other problem with this switch is that oil can leak past its seal. With the oil under a lot of pressure at this point, the oil loss can be a serious concern. It's a simple replacement when doing most oil change work.

This Oil Pressure Switch fits the following BMWs:
1985-1991 E30 318i, 318is, 325e, 325i, M3
1992-1999 E36 318i/is, 325i/is, 328i/is, 323is, M3
1992-1997 E31 840i, 850i
1988-1994 E32 735i, 735iL, 740i, 740iL
1989-1995 E34 525i, 530i, 535i, 540i, M5
1995-2001 E38 740i, 740iL, 750i, 750iL
1996-2002 Z3 Roadster/Coupe 1.9, 2.3, 2.5, 2.8, 3.0, 3.2
1997-2003 E39 525i, 528i, 530i, 540i, M5
1999-2005 E46 323, 325, 328, 330, M3
2000-2003 Z8 roadster
2001-2006 E53 X5 X5 3.0i, X5 4.4i, X5 4.6is, X5 4.8is
2002+ E65/E66 745i, 745li, 750i, 750li, 760i, B7 Alpina
2003+ Z4 Roadster/Coupe Z4 2.5, 3.0, 3.0si
2004+ E60 525i, 530i, 535i, 545i, 550i, M5
2005+ E63/E64 645Ci, 650i, M6
2005+ E83 X3 X3 2.5, X3 3.0
2006+ E90/E92 325, 328, 330, 335
2007+ E70 X5 X5 3.0i, X5 4.8i
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Bosch - Corporate Logo
T#:375327
Part#: 61131372626
In Stock at Vendor
$ 2.03 USD
Free Shipping on orders $49 and up
Walker MAP Sensor - BMW N20 N26 S55 S63
Upgraded 3.5 Bar MAP sensor to increase boost ceiling!
Walker - Corporate Logo
T#:39059258
Part#: 13627843531
Ships in 1 Business Day
$ 163.99

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

$ 135.99 USD
Free Shipping on orders $49 and up
$ 135.99 USD
Free Shipping on orders $49 and up
This is a replacement Manifold Absolute Pressure sensor Located on the charge air cooler. The MAP controls the amount of fuel that goes through the injectors based on the pressure of air at the intake manifold. If your vehicle is giving you a MAP code, replace it immediately to ensure you get the best gas mileage and performance. It is common for this part to fail slowly and cause poor fuel mileage and hampered performance. When it fails, the vehicle will stutter and stall as it falls into a limp mode. One way to check if your MAP is bad is to unplug the connector before starting your car. If it idles well (compared to a previous poor idle), your MAP sensor likely needs to be replaced. If you let this maintenance part go, your fuel economy will suffer as too much fuel is going into the engine and not being burned. A great way to give your vehicle an efficiency boost.
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Hitachi - Corporate Logo
T#:48815471
Part#: 13627525015
Ships in 6 Business Days
$ 66.99 USD
Free Shipping on orders $49 and up
The crankshaft position sensor transmits the crankshaft's position to the computer. This helps the computer to calculate proper spark and fuel control. If you're struggling with CELs, hard starts or no starts, stalling, and/or a rough idle, you may need to replace the crank position sensor.
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Hitachi - Corporate Logo
T#:48815454
Part#: 13627525014
Ships in 6 Business Days
$ 40.00 USD
Free Shipping on orders $49 and up
The camshaft position sensor communicates the position of the camshaft to the computer. This helps the computer to calculate proper spark and fuel control. If you're struggling with CELs, hard starts or no starts, stalling, and/or a rough idle, you may need to replace the cam position sensor.
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Hitachi - Corporate Logo
T#:48850074
Part#: 13627582842
Ships in 6 Business Days
$ 184.99 USD
Free Shipping on orders $49 and up
Engine cranks but doesn't start? This sensor is often the issue.
Bosch - Corporate Logo
T#:57304037
Part#: 12417843530
Special Order: No Guaranteed ETA
New Item
$ 412.99 USD
Free Shipping on orders $49 and up
Ensure your high-performance engine cranks reliably every time with an OE-quality starter motor from Bosch.

Starter Mounting Hardware
2X Entries Into Our F80 M3 Sweepstakes
Rein - Corporate Logo
T#:594380
Part#: 12410392577
Ships in 1 Business Day
$ 10.99 USD
Free Shipping on orders $49 and up
Modern starter and water pump fasteners are torque-to-yield, meaning they stretch and can only be safely used once. Replace your hardware for peace of mind.