Find Parts That Fit Your Vehicle

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.

Sub-Categories

Sort By:

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!

Show More Show Less
Precision Raceworks - Corporate Logo
T#:35761669
Part#: 201-0409
Ships in 8 Business Days
$ 199.99 USD
Free Shipping on orders $49 and up
The **Precision Raceworks S58/B58 Plug-and-Play Install Harness for the Motiv ReFlex+** is certified by Motiv Motorsports and is an essential upgrade for anyone integrating a ReFlex+ into their S58 or B58 vehicle. This Harness replaces only the signal and power sub harness portion of the Motiv Reflex. Standard universal Motiv ReFlex Plus harness required for use of this Plug and Play Harness - ES#4810312 / ES#4810314 This innovative harness eliminates the need for cutting, crimping, or splicing into your factory wiring, providing a straightforward, fully reversible installation. Simply plug it in, and you're ready to go! ### Why Choose the Precision Raceworks Harness? Although the main harness included with the Motiv ReFlex+ is well-designed, its standard sub-harness requires splicing into the factory wiring. Precision Raceworks addresses this by offering a plug-and-play replacement for the sub-harness. This solution retains the high-quality main harness, avoids unnecessary costs, and simplifies installation for seamless performance. ### Key Features of the Precision Raceworks X58 Harness: - **Motiv Motorsports Certified**, ensuring complete compatibility. - **100% Plug-and-Play** for a quick, hassle-free installation. - **Compatible with Tuning Platforms** such as MHD, MHD+, EcuTek, and BM3. - **Premium Build Quality**, manufactured in an ISO 9001-certified facility using automotive-grade wiring. - **Fast Installation**, completed in as little as one hour. - **Reversible Setup**, preserving the factory harness with no permanent modifications. The Precision Raceworks harness is the ideal choice for ReFlex+ users seeking a reliable, cost-effective, and user-friendly solution without altering their vehicle's original wiring.
Show More Show Less
Rein Alternator Mounting Screw Set
2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
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

Show More Show Less

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
Free Shipping on orders $49 and up
$ 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!

Show More Show Less

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.
Show More Show Less
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
Free Shipping on orders $49 and up
$ 34.33 USD
Free Shipping on orders $49 and up
Located on the intake manifold or intake box

Genuine MINI - Corporate Logo
T#:24376
Part#: 61366977982
Ships in 1-2 days
4% off MSRP $ 23.48

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

$ 22.46 USD
Free Shipping on orders $49 and up
4% off MSRP
$ 23.48

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

$ 22.46 USD
Free Shipping on orders $49 and up
Genuine MINI RELAY FOR FAN
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
Free Shipping on orders $49 and up
$ 54.99 USD
Free Shipping on orders $49 and up

Genuine MINI - Corporate Logo
T#:476378
Part#: 12617568481
In Stock
21% off MSRP $ 48.74

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

$ 38.59 USD
Free Shipping on orders $49 and up
21% off MSRP
$ 48.74

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

$ 38.59 USD
Free Shipping on orders $49 and up

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
Free Shipping on orders $49 and up
$ 28.99 USD
Free Shipping on orders $49 and up

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
Show More Show Less
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
Free Shipping on orders $49 and up
$ 302.99 USD
Free Shipping on orders $49 and up

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

Show More Show Less
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
Free Shipping on orders $49 and up
$ 454.99 USD
Free Shipping on orders $49 and up
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!
Show More Show Less


Genuine MINI - Corporate Logo
T#:410470
Part#: 13627552114
Ships in 1-2 days
8% off MSRP $ 62.99

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

$ 57.99 USD
Free Shipping on orders $49 and up
8% off MSRP
$ 62.99

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

$ 57.99 USD
Free Shipping on orders $49 and up
Genuine MINI - Corporate Logo
T#:141367
Part#: 61216924895
Ships in 1-2 days
7% off MSRP $ 58.99

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

$ 54.99 USD
Free Shipping on orders $49 and up
7% off MSRP
$ 58.99

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

$ 54.99 USD
Free Shipping on orders $49 and up
Genuine MINI HEAT RESISTANT BATTERY BOX C
Genuine MINI - Corporate Logo
T#:144371
Part#: 61361472984
Ships in 1-2 days
2% off MSRP $ 24.65

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

$ 24.14 USD
Free Shipping on orders $49 and up
2% off MSRP
$ 24.65

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

$ 24.14 USD
Free Shipping on orders $49 and up
Genuine MINI RELAY, CHANGE-OVER CONTACT,

Genuine MINI - Corporate Logo
T#:39405
Part#: 12427515200
Ships in 1-2 days
$ 48.99 USD
Free Shipping on orders $49 and up
Genuine MINI BATTERY CABLE NEGATIVE
Fits BMW Engines including:
W10,W11


Genuine MINI - Corporate Logo
T#:521992
Part#: 51717290817
Ships in 1-2 days
5% off MSRP $ 54.99

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

$ 51.99 USD
Free Shipping on orders $49 and up
5% off MSRP
$ 54.99

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

$ 51.99 USD
Free Shipping on orders $49 and up
Genuine MINI - Corporate Logo
T#:24298
Part#: 61216915175
Ships in 1-2 days
7% off MSRP $ 58.99

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

$ 54.99 USD
Free Shipping on orders $49 and up
7% off MSRP
$ 58.99

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

$ 54.99 USD
Free Shipping on orders $49 and up
Genuine MINI HEAT RESISTANT BATTERY BOX C.--

This item fits the following BMWs:
MINI Cooper - Mini Cooper

--.

Genuine MINI - Corporate Logo
T#:197102
Part#: 51717317737
Ships in 1-2 days
6% off MSRP $ 40.00

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

$ 37.74 USD
Free Shipping on orders $49 and up
6% off MSRP
$ 40.00

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

$ 37.74 USD
Free Shipping on orders $49 and up
Genuine Bmw Battery Cover
Genuine MINI - Corporate Logo
T#:525286
Part#: 61132359997
Ships in 1-2 days
7% 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.

$ 24.99 USD
Free Shipping on orders $49 and up
7% 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.

$ 24.99 USD
Free Shipping on orders $49 and up

Genuine MINI - Corporate Logo
T#:14760
Part#: 12141487246
In Stock
7% off MSRP $ 71.99

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

$ 66.99 USD
Free Shipping on orders $49 and up
7% off MSRP
$ 71.99

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

$ 66.99 USD
Free Shipping on orders $49 and up
Genuine MINI PING SENSOR.--

This item fits the following BMWs:
MINI Cooper - Mini Cooper, Mini Cooper Convt, Mini Cooper S, Mini Cooper S Convt

--. Fits BMW Engines including:
W10,W11

Show More Show Less

Genuine MINI - Corporate Logo
T#:103173
Part#: 51437051767
Ships in 1-2 days
6% off MSRP $ 123.99

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

$ 115.99 USD
Free Shipping on orders $49 and up
6% off MSRP
$ 123.99

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

$ 115.99 USD
Free Shipping on orders $49 and up
Genuine MINI COVER, LATERAL TRIM PANEL
Beru - Corporate Logo
T#:596879
Part#: 12321350052
In Stock at Vendor
$ 41.99

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

$ 40.99 USD
Free Shipping on orders $49 and up
$ 40.99 USD
Free Shipping on orders $49 and up
If you are having issues with voltage peaking, lights fading in and out as your driving, or your battery keeps dying despite the car running, It could be the result of a faulty voltage regulator. Voltage regulators control the amount of power coming from the alternator.
Show More Show Less
Genuine MINI - Corporate Logo
T#:2750708
Part#: 61132471242
In Stock
11% off MSRP $ 18.99

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

$ 16.99 USD
Free Shipping on orders $49 and up
11% off MSRP
$ 18.99

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

$ 16.99 USD
Free Shipping on orders $49 and up


Ping / Knock Sensor
2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
Bosch - Corporate Logo
T#:592042
Part#: 13627552114
In Stock
$ 30.99

This product was last offered at the strikethrough price on
04-20-2026

$ 22.99 USD
Free Shipping on orders $49 and up
$ 22.99 USD
Free Shipping on orders $49 and up
Oil Pressure Switch (fits most BMWs)
2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
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
Show More Show Less
Genuine MINI - Corporate Logo
T#:40566
Part#: 12527542850
In Stock
$ 8.06 USD
Free Shipping on orders $49 and up
Most frequently utilized in the thermostat housing coolant temperature sensor harness. If wire terminals and wire are required, ES2676087 x 2.

OEM Bosch Fuel Pump Relay -- e30 e36 e46 e28 e34 e39 e24 e23 e32 e38 ...
2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
Bosch - Corporate Logo
T#:2857
Part#: 61311373585
In Stock
$ 11.99 USD
Free Shipping on orders $49 and up

If you have a faulty fuel pump relay, fuel will not be pumped to the engine and your engine may not start. Replace your relay with this high quality Bosch replacement to restore fuel pump operation.

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!

This 4 prong relay fits many BMW's and fulfulls a variety of functions. Please check your relay pins configuration to ensure the proper fitment. Fits BMW 2002, e30 e36 e46 e28 e34 e39 e24 e23 e32 e38 e31 z3


This item fits the following BMWs:
1970-1976 2002 BMW 1600 2002 2002tii
1984-1991 E30 BMW 318i 318is 318ic 325e 325es 325i 325ic 325is 325ix M3
1992-1998 E36 BMW 318i 318is 318ti 318ic 323is 323ic 325i 325is 325ic 328i 328is 328ic M3
1999-2005 E46 BMW 323i 323ci 325i 325ci 325xi 328i 328ci 330i 330ci 330xi M3
1982-1988 E28 BMW 524td 528e 533i 535i 535is M5
1989-1995 E34 BMW 525i 530i 535i 540i M5
1997-2003 E39 BMW 525i 528i 530i 540i M5
1982-1989 E24 BMW 633csi 635csi M6
1981-1987 E23 BMW 733i 735i
1988-1994 E32 BMW 735i 735il 740i 740il 750il
1995-2001 E38 BMW 740i 740il 750il
1990-1999 E31 BMW 840i 840ci 850i 850ci 850csi
1997-2002 Z3 BMW Z3 1.9 Z3 2.3 Z3 2.5i Z3 2.8 Z3 3.0i M coupe M Roadster

Show More Show Less

Genuine MINI - Corporate Logo
T#:212573
Part#: 61217644251
In Stock
5% off MSRP $ 18.99

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

$ 17.99 USD
Free Shipping on orders $49 and up
5% off MSRP
$ 18.99

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

$ 17.99 USD
Free Shipping on orders $49 and up
Genuine MINI Battery Hold Down - 61217644251
OEM Bosch Engine Knock Sensor - E36 318i 1992-1996 M42 engine ...
2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
Bosch - Corporate Logo
T#:2089
Part#: 12141734580
In Stock
$ 77.99

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

$ 65.99 USD
Limited Qty Sale
Free Shipping on orders $49 and up
$ 77.99

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

$ 65.99 USD
Limited Qty Sale
Free Shipping on orders $49 and up

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. For cars with M42 Engine.

OEM replacement for BMW part # 12141734580.

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!

This item fits the following BMWs:
1992-1996 E36 BMW 318i 318is 318ic 318ti

Show More Show Less

Bosch - Corporate Logo
T#:54388475
Part#: 13627636937
In Stock
New Item
$ 29.99 USD
Free Shipping on orders $49 and up
Keep your ignition timing razor-sharp and your engine safe from destructive detonation. This replacement Knock Sensor acts as your engine's first line of defense, constantly listening for pre-ignition "pinging" or knocking.
Show More Show Less

Genuine MINI - Corporate Logo
T#:541111
Part#: 51717290727
In Stock
Sale - Save 39% $ 29.99

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

$ 18.23 USD
Free Shipping on orders $49 and up
Sale - Save 39%
$ 29.99

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

$ 18.23 USD
Free Shipping on orders $49 and up

Rein Relay
2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
Rein - Corporate Logo
T#:381382
Part#: 61311378297
Back Ordered
$ 20.99 USD
Free Shipping on orders $49 and up
Replacement relay for the typical white-green and orange relays found in your vehicle
15A Fuse - Priced Each
2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
Bosch - Corporate Logo
T#:375327
Part#: 61131372626
In Stock at Vendor
$ 2.03 USD
Free Shipping on orders $49 and up
OEM Bosch Starter Relay - E21 320i
2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
Bosch - Corporate Logo
T#:583822
Part#: 61311243207
In Stock at Vendor
$ 4.99 USD
Free Shipping on orders $49 and up
This is a brand new starter relay from OEM supplier Bosch. If you have replaced your starter and have ruled out every other issue, this relay could restore your starters operation and get your car back up and running.
Show More Show Less


OEM Bosch Remanufactured Alternator - 180 Amp - E70 X5 3.0si N52 3.0L...
2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
Bosch - Corporate Logo
T#:638550
Part#: 12317560986-14KT
Ships in 2 Business Days
$ 1,099.99 USD
Free Shipping on orders $49 and up
Replace your dead alternator with this remanufactured unit and make sure your battery is being charged properly. When doing any sort of repair or maintenance there is no replacement for original parts. Turner Motorsport carries the OEM Bosch brand with pride and has the parts you need to complete your next project with confidence. Includes a $75.00 core charge to be refunded after we receive your refundable core.
Show More Show Less
Temperature Sensor
2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
Bosch - Corporate Logo
T#:29898445
Part#: 13621362599
Ships in 2 Business Days
$ 283.99

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

$ 266.99 USD
Free Shipping on orders $49 and up
$ 266.99 USD
Free Shipping on orders $49 and up
Genuine BMW Temperature-Time Switch
Remanufactured Starter Motor
2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
Bosch - Corporate Logo
T#:596907
Part#: 12417501738
Ships in 2 Business Days
$ 431.15

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

$ 300.49 USD
Free Shipping on orders $49 and up
$ 300.49 USD
Free Shipping on orders $49 and up
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 # 12417501738.

Genuine MINI - Corporate Logo
T#:40999
Part#: 12907629991
Ships in 4 Business Days
$ 35.99 USD
Free Shipping on orders $49 and up
$ 35.99 USD
Free Shipping on orders $49 and up
Genuine MINI COVER
Fits BMW Engines including:
N14,N16,N18


Genuine MINI - Corporate Logo
T#:143812
Part#: 61332753033
Ships in 1-2 days
7% off MSRP $ 61.23

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

$ 56.82 USD
Free Shipping on orders $49 and up
7% off MSRP
$ 61.23

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

$ 56.82 USD
Free Shipping on orders $49 and up
Genuine MINI HORN, HIGH PITCH
Genuine MINI - Corporate Logo
T#:141198
Part#: 61142755704
Ships in 7 Business Days
$ 27.03 USD
Free Shipping on orders $49 and up
Genuine MINI FUSE BOX

Genuine MINI - Corporate Logo
T#:9836390
Part#: 61449494458
Ships in 3 Business Days
7% 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.

$ 51.99 USD
Free Shipping on orders $49 and up
7% 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.

$ 51.99 USD
Free Shipping on orders $49 and up
Starter Motor - 12411466345
2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
Bosch - Corporate Logo
T#:596906
Part#: 12411466345
Ships in 1-2 days
$ 280.98 USD
Free Shipping on orders $49 and up
Replacement Starter from Bosch for your 524TD

Genuine MINI - Corporate Logo
T#:140301
Part#: 61136906606
Special Order: No Guaranteed ETA
$ 27.99 USD
Free Shipping on orders $49 and up
Genuine MINI COVER, FUSE BOX

Genuine MINI - Corporate Logo
T#:530701
Part#: 51717351481
Ships in 4 Business Days
5% off MSRP $ 42.99

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

$ 40.99 USD
Free Shipping on orders $49 and up
5% off MSRP
$ 42.99

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

$ 40.99 USD
Free Shipping on orders $49 and up
Genuine MINI - Corporate Logo
T#:39413
Part#: 12427522234
Ships in 4 Business Days
6% off MSRP $ 46.99

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

$ 43.99 USD
Free Shipping on orders $49 and up
6% off MSRP
$ 46.99

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

$ 43.99 USD
Free Shipping on orders $49 and up
Genuine MINI BATTERY CABLE NEGATIVE
Fits BMW Engines including:
W10,W11

Genuine MINI - Corporate Logo
T#:141454
Part#: 61218385236
Ships in 4 Business Days
$ 14.99

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

$ 12.99 USD
Free Shipping on orders $49 and up
$ 12.99 USD
Free Shipping on orders $49 and up
Genuine MINI COVER POSITIVE BATTERY TERMI


Genuine MINI - Corporate Logo
T#:141362
Part#: 61216917738
Ships in 1-2 days
$ 66.98 USD
Free Shipping on orders $49 and up
Genuine MINI BATTERY HOLD DOWN
OEM Bosch Remanufactured Alternator (215 amp) - AL9450X - F22 F3X F07...
2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
Bosch - Corporate Logo
T#:639763
Part#: 12317616121BKT
Ships on Sep 10, 2026
$ 689.99

This product was last offered at the strikethrough price on
04-12-2026

$ 558.99 USD
Free Shipping on orders $49 and up
$ 558.99 USD
Free Shipping on orders $49 and up
*Price includes a refundable $100 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: AL9450X, 0986UR6231 Replaces the following BMW part numbers: 12317616119, 12317616121
Show More Show Less