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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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Bosch Starter Motor With Hardware
Bosch Starter Motor With Hardware
10X Entries Into Our F80 M3 Sweepstakes
Packaged by Turner - Corporate Logo
T#:56110332
Part#: SR0492NKT4
In Stock
New Item
$ 273.99

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

$ 261.99 USD
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$ 261.99 USD
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At the core is a brand-new Bosch Starter Motor, engineered to withstand extreme operating conditions while delivering immediate cranking speed. This kit includes also the required Genuine BMW Aluminum Mounting Screw Set.
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BMW Alternator - SEG Automotive 0121.715.118
BMW Alternator - SEG Automotive 0121.715.118
SEG Automotive - Corporate Logo
T#:54851991
Part#: 12317560985
Ships in 1 Business Day
New Item
$ 1,049.99

This product was last offered at the strikethrough price on
07-16-2026

$ 961.99 USD
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$ 961.99 USD
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MINI Alternator - SEG Automotive 0125.711.078
MINI Alternator - SEG Automotive 0125.711.078
SEG Automotive - Corporate Logo
T#:54851993
Part#: 12317613445
Ships in 1 Business Day
New Item
$ 564.99

This product was last offered at the strikethrough price on
07-16-2026

$ 521.99 USD
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$ 521.99 USD
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BMW Starter - SEG Automotive 0001.108.460
BMW Starter - SEG Automotive 0001.108.460
SEG Automotive - Corporate Logo
T#:55857741
Part#: 12417610344
Ships in 1 Business Day
New Item
$ 368.99

This product was last offered at the strikethrough price on
07-16-2026

$ 337.99 USD
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$ 337.99 USD
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BMW Alternator - SEG Automotive 0124.515.223
BMW Alternator - SEG Automotive 0124.515.223
SEG Automotive - Corporate Logo
T#:54851980
Part#: 12317519618
Ships in 1 Business Day
New Item
$ 503.99

This product was last offered at the strikethrough price on
07-16-2026

$ 462.99 USD
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$ 462.99 USD
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Eccentric Shaft Sensor Seal
Eccentric Shaft Sensor Seal
Meistersatz - Corporate Logo
T#:57580051
Part#: 11127559699
Ships in 3 Business Days
New Item
$ 18.99 USD
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$ 18.99 USD
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Maintain peak driving dynamics and uncompromised chassis precision with this original-spec replacement from Meistersatz.
MINI Starter - SEG Automotive 0001.106.026
MINI Starter - SEG Automotive 0001.106.026
SEG Automotive - Corporate Logo
T#:54851997
Part#: 12411489995
Ships in 1 Business Day
New Item
$ 432.99

This product was last offered at the strikethrough price on
07-16-2026

$ 406.99 USD
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$ 406.99 USD
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MINI Alternator - SEG Automotive 0124.325.157
MINI Alternator - SEG Automotive 0124.325.157
SEG Automotive - Corporate Logo
T#:54851988
Part#: 12317550319
Ships in 1 Business Day
New Item
$ 473.99

This product was last offered at the strikethrough price on
07-16-2026

$ 436.99 USD
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$ 436.99 USD
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BMW Alternator - SEG Automotive 0124.525.588
BMW Alternator - SEG Automotive 0124.525.588
SEG Automotive - Corporate Logo
T#:54851984
Part#: 12317541694
Ships in 1 Business Day
New Item
$ 521.99

This product was last offered at the strikethrough price on
07-16-2026

$ 474.99 USD
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$ 474.99 USD
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New 120A Alternator
New 120A Alternator
SEG Automotive - Corporate Logo
T#:58965210
Part#: 0124.515.052
Ships on Nov 3, 2026
New Item
$ 485.99 USD
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$ 485.99 USD
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A strong charging system keeps everything from your ignition to your stereo working at its best, and a failing alternator can undermine all of it.
New Alternator
New Alternator
SEG Automotive - Corporate Logo
T#:58965213
Part#: 0124.525.523
Ships on Nov 3, 2026
New Item
$ 495.99 USD
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$ 495.99 USD
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Your BMW's charging system powers everything from ignition to infotainment, so a weak alternator affects the whole car.
Starter Motor
Starter Motor
SEG Automotive - Corporate Logo
T#:59001789
Part#: 12417570487
Ships on Nov 3, 2026
New Item
$ 325.99 USD
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$ 325.99 USD
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This SEG Automotive unit is built as a direct replacement for the factory 0.9 kW starter on the R50 Hatch and R52 Convertible.
New 150A Alternator
New 150A Alternator
SEG Automotive - Corporate Logo
T#:58965212
Part#: 0124.525.561
Ships on Nov 3, 2026
New Item
$ 487.99 USD
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$ 487.99 USD
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SEG Automotive, the company behind Bosch's starter motor and generator business, builds this brand-new 150-amp alternator with a freewheel pulley that smooths out belt loads for a quieter, longer-lasting accessory drive.
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Starter Motor
Starter Motor
SEG Automotive - Corporate Logo
T#:58965209
Part#: 0001.148.508
Ships on Nov 3, 2026
New Item
$ 274.99 USD
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$ 274.99 USD
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A healthy starter is what gets your BMW from parked to pulling away without a second thought.
Alternator
Alternator
SEG Automotive - Corporate Logo
T#:59001785
Part#: 12311711204
Ships on Nov 3, 2026
New Item
$ 726.99 USD
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$ 726.99 USD
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The E24 M635CSi is one of BMW's great grand tourers, and keeping one healthy means a charging system you can count on.
New Starter Motor
New Starter Motor
SEG Automotive - Corporate Logo
T#:58965208
Part#: 0001.170.202
Ships on Nov 3, 2026
New Item
$ 216.99 USD
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$ 216.99 USD
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The smart choice for F-chassis owners who want their car starting on the first try, every time.
Starter Motor
Starter Motor
SEG Automotive - Corporate Logo
T#:59001784
Part#: 12417616698
Ships on Nov 3, 2026
New Item
$ 275.99 USD
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$ 275.99 USD
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On a MINI built for quick, spirited driving, there is no reason to put up with slow or hesitant cranking.
Starter
Starter
SEG Automotive - Corporate Logo
T#:59001787
Part#: 12418589891
Ships on Nov 3, 2026
New Item
$ 276.99 USD
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$ 276.99 USD
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Modern G-chassis BMWs deliver serious performance, and none of it matters if the engine won't start.
Febi Engine Oil Level Sensor - 12617607909
Febi Engine Oil Level Sensor - 12617607909
Febi - Corporate Logo
T#:54816237
Part#: 12617607909
Special Order: No Guaranteed ETA
New Item
$ 121.99

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

$ 95.99 USD
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$ 95.99 USD
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Reliable German replacement sensor keeps your BMW oil levels monitored.
Febi Oil Level Sensor - BMW F2X, F3X
Febi Oil Level Sensor - BMW F2X, F3X
Febi - Corporate Logo
T#:52516271
Part#: 1000541
Special Order: No Guaranteed ETA
New Item
$ 90.99 USD
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$ 90.99 USD
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Ensure your vehicle’s engine remains protected with the Febi 1000541 Oil Level Sensor.
Starter Motor
Starter Motor
Febi - Corporate Logo
T#:56544032
Part#: 12412354701
Special Order: No Guaranteed ETA
New Item
$ 146.99 USD
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$ 146.99 USD
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Built by Febi Bilstein, this complete assembly ensures seamless integration into your vehicle’s electrical and flywheel system.
Crankshaft Position Sensor
Crankshaft Position Sensor
Febi - Corporate Logo
T#:56254775
Part#: 13627582842
Special Order: No Guaranteed ETA
New Item
$ 19.99 USD
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$ 19.99 USD
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This Febi Crankshaft Position Sensor ensures your ECU receives ultra-fast, precise engine speed and position data under all driving conditions.
Connecting Cable For Starter Battery - Positive
Connecting Cable For Starter Battery - Positive
Febi - Corporate Logo
T#:56724702
Part#: 61129259425
Special Order: No Guaranteed ETA
New Item
$ 52.99 USD
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$ 52.99 USD
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This starter battery connector cable is built to exacting OE specifications, delivering consistent power transfer from the battery.
Alternator
Alternator
Febi - Corporate Logo
T#:56544002
Part#: 12317501690
Special Order: No Guaranteed ETA
New Item
$ 245.99 USD
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$ 245.99 USD
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Trust Febi Bilstein for clean power output and dependable performance every time you start your engine.
Oil Level Sensor
Oil Level Sensor
Febi - Corporate Logo
T#:55857752
Part#: 12615A740A3
Special Order: No Guaranteed ETA
New Item
$ 87.99 USD
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$ 87.99 USD
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Invaluable for keeping tabs on your engine’s lifeblood, the Febi Bilstein oil level sensor is an essential maintenance item for demanding enthusiasts.
Crankshaft Sensor With Sealing Ring
Crankshaft Sensor With Sealing Ring
Febi - Corporate Logo
T#:56507847
Part#: 12141709616
Special Order: No Guaranteed ETA
New Item
$ 14.99 USD
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$ 14.99 USD
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Keep your BMW’s engine management system operating at peak performance with this replacement crankshaft position sensor from Febi Bilstein.
Starter Motor
Starter Motor
Febi - Corporate Logo
T#:56724716
Part#: 12412354693
Special Order: No Guaranteed ETA
New Item
$ 147.99 USD
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$ 147.99 USD
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This Febi Bilstein starter motor delivers the cranking performance your BMW needs for instant ignition response every time you turn the key.
Crankshaft Position Sensor
Crankshaft Position Sensor
Febi - Corporate Logo
T#:56254756
Part#: 13627809334
Special Order: No Guaranteed ETA
New Item
$ 46.99 USD
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$ 46.99 USD
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Maintain the crisp throttle response and reliable performance of your BMW with this Febi Bilstein Crankshaft Position Sensor.
Oil Pressure Sensor
Oil Pressure Sensor
Febi - Corporate Logo
T#:55857763
Part#: 12615B4C892
Special Order: No Guaranteed ETA
New Item
$ 23.99 USD
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$ 23.99 USD
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Protect your ultimate driving machine from disastrous lubrication failures with the Febi Bilstein Oil Pressure Sensor.
Engine Oil Level Sensor - 12618608780
Engine Oil Level Sensor - 12618608780
Febi - Corporate Logo
T#:54816234
Part#: 1000540
Special Order: No Guaranteed ETA
New Item
$ 116.99

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

$ 89.00 USD
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$ 89.00 USD
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When BMW threw out the mechanical dipstick, they shifted the responsibility of protecting your engine entirely to the electronic oil level sensor. On the street or the track, knowing your oil level is non-negotiable. If your dashboard sensor readout is throwing errors or lagging, your N52, N54, N55, S55, or N63 engine is operating in the dark. This Febi Bilstein engine oil level sensor is an excellent, cost-effective alternative to expensive dealership parts counter pieces. Febi is an industry-trusted German manufacturer, ensuring this sensor reads with the exact same precision and calibration as original equipment. Keep your ultimate driving machine properly monitored and safe from oil starvation. Key Features Premium German Engineering: Manufactured by Febi Bilstein to match original BMW operational tolerances. Critical Engine Protection: Restores accurate iDrive/instrument cluster oil volume and temperature readouts. Exact Factory Fit: Features the correct 3-pin oval plug orientation for a seamless plug-and-play install. Track-Day Insurance: Ensures your electronic monitoring system functions flawlessly under heavy load. Turner Tip: Oil level sensors are notorious for failing due to age and repeated heat cycles. Because this sensor installs directly into the bottom of the oil pan, make this swap part of your next oil service kit checklist.
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Oil Level Sensor
Oil Level Sensor
Febi - Corporate Logo
T#:56724736
Part#: 12615A740A2
Special Order: No Guaranteed ETA
New Item
$ 47.99 USD
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$ 47.99 USD
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Maintain strict performance reliability and safeguard your engine with the Febi Bilstein Engine Oil Level Sensor.

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