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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

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T#:56110332

Part#: SR0492NKT4

In Stock

$ 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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Meyle N20 Crankshaft Position Sensor - 3148100013 - F3x, F22, F23, F1...

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T#:55030834

Part#: 3148100013

In Stock

$ 36.99 USD

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$ 36.99 USD

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This Meyle Crankshaft Position Sensor is the perfect solution for restoring the critical engine speed data your ECU relies on.

Meyle Crankshaft Pulse Sensor - 3148100018 - G20, G30 5 Series, G32 6...

5X Entries Into Our F80 M3 Sweepstakes Earn 5% back in Turner Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply

T#:55030835

Part#: 3148100018

In Stock

$ 15.99 USD

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$ 15.99 USD

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Keep your ultimate driving machine running the way it was engineered to with this reliable replacement.

Meyle Exhaust Camshaft Position Sensor - BMW S54 S62

5X Entries Into Our F80 M3 Sweepstakes Earn 5% back in Turner Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply

T#:55497462

Part#: 3148000038

In Stock

$ 27.99

This product was last offered at the strikethrough price on
09-14-2026

$ 25.99 USD

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$ 25.99 USD

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Don't let a failing camshaft position sensor rob your vehicle of power or cut your track day short. This Meyle replacement camshaft sensor is built to deliver fast, highly accurate data to the ECU, preventing the performance drops, sluggish throttle response, and rough idling caused by worn-out factory electronics. Engineered to withstand high underhood heat and intense vibrations, it keeps your ignition timing and fuel delivery tightly synced, whether you are daily driving or pushing through high-RPM pulls.

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MINI Alternator - SEG Automotive 0125.711.078

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T#:54851993

Part#: 12317613445

In Stock

$ 564.99

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

$ 563.99 USD

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$ 563.99 USD

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SEG Automotive Alternator - SEG Automotive 0121.715.118 - 12317560985...

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T#:54851991

Part#: 12317560985

Ships in 1 Business Day

$ 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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SEG Automotive Starter - SEG Automotive 0001.108.460 - 12417610344 - ...

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T#:55857741

Part#: 12417610344

Ships in 1 Business Day

$ 368.99

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

$ 340.99 USD

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$ 340.99 USD

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MINI Alternator - SEG Automotive 0124.325.157

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T#:54851988

Part#: 12317550319

Ships in 1 Business Day

$ 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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SEG Automotive Alternator - SEG Automotive 0124.515.223 - 12317519618...

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T#:54851980

Part#: 12317519618

Ships in 1 Business Day

$ 503.99

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

$ 472.99 USD

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$ 472.99 USD

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MINI Starter - SEG Automotive 0001.106.026

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T#:54851997

Part#: 12411489995

Ships in 1 Business Day

$ 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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SEG Automotive Alternator - SEG Automotive 0124.525.588 - 12317541694...

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T#:54851984

Part#: 12317541694

Ships in 1 Business Day

$ 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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Knock Sensor

5X Entries Into Our F80 M3 Sweepstakes Earn 5% back in Turner Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply

T#:55353615

Part#: 12141716055

Ships on Nov 18, 2026

$ 28.99 USD

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$ 28.99 USD

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This Meyle replacement knock sensor is the perfect solution for keeping your high-performance engine safe and running at its absolute peak.

Starter Motor

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T#:59001784

Part#: 12417616698

Ships on Nov 19, 2026

$ 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.

SEG Automotive New Alternator - 0124.525.523 - E46 325i 325Ci 330Ci, ...

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T#:58965213

Part#: 0124.525.523

Ships on Nov 19, 2026

$ 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.

SEG Automotive New 150A Alternator - 0124.525.561 - E21, E30, E36, E4...

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T#:58965212

Part#: 0124.525.561

Ships on Nov 19, 2026

$ 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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SEG Automotive N47 N57 Starter Motor - 0001.148.508 - F3x, F10 5 Seri...

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T#:58965209

Part#: 0001.148.508

Ships on Nov 19, 2026

$ 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.

SEG Automotive B46 B48 New Starter Motor - 0001.170.202 - F3x 330i 43...

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T#:58965208

Part#: 0001.170.202

Ships on Nov 19, 2026

$ 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.

SEG Automotive New 120A Alternator - 0124.515.052 - E46, E39 525i 530...

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T#:58965210

Part#: 0124.515.052

Ships on Nov 19, 2026

$ 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.

Starter Motor

Earn 5% back in Turner Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply

T#:59001789

Part#: 12417570487

Ships on Nov 19, 2026

$ 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.

SEG Automotive Starter - 12418589891 - G30 540d xDrive

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T#:59001787

Part#: 12418589891

Ships on Nov 19, 2026

$ 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.

SEG Automotive Alternator - 12311711204 - E24 635CSi

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T#:59001785

Part#: 12311711204

Ships on Nov 19, 2026

$ 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.

Meyle Crankshaft Pulse Sensor - 314810014 - E9x, F3x, F8x, E8x, F22, ...

5X Entries Into Our F80 M3 Sweepstakes Earn 5% back in Turner Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply

T#:52762518

Part#: 314810014

Ships on Nov 18, 2026

$ 19.99 USD

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$ 19.99 USD

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Revitalize your vehicle’s performance and reliability with the MEYLE Crankshaft Pulse Sensor.

Intake air temperature sensor

5X Entries Into Our F80 M3 Sweepstakes Earn 5% back in Turner Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply

T#:58307544

Part#: 13628519445

Ships on Jan 19, 2027

$ 25.99 USD

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$ 25.99 USD

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Meyle Camshaft Position Sensor - 3148100005 - I01 i3

5X Entries Into Our F80 M3 Sweepstakes Earn 5% back in Turner Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply

T#:52762526

Part#: 3148100005

Ships on Nov 18, 2026

$ 30.99 USD

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$ 30.99 USD

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The MEYLE Camshaft Position Sensor restores the "timing" of your engine, ensuring your fuel is injected at the perfect millisecond.

Meyle Crank Position Sensor - MPS0126 - F3x, F22, F23, F10 G30 5 Seri...

5X Entries Into Our F80 M3 Sweepstakes Earn 5% back in Turner Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply

T#:52621846

Part#: MPS0126

Ships on Nov 18, 2026

$ 29.99 USD

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$ 29.99 USD

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The Meyle MPS0126 Crankshaft Position Sensor is a robust replacement for aging or failing factory sensors that often trigger P0335 or P0339 trouble codes.

Meyle Crank Position Sensor - E36, E34

5X Entries Into Our F80 M3 Sweepstakes Earn 5% back in Turner Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply

T#:55497425

Part#: 3148998003

Back Ordered

$ 26.99

This product was last offered at the strikethrough price on
08-26-2026

$ 24.99 USD

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$ 24.99 USD

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Don't let a basic sensor keep your E36 or E34 off the tarmac—swap in this high-quality Meyle unit and drive with confidence.

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