BMW Electrical Sensors, Switches, & Relays for BMW 3 Series E46 (1999-2005)

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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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Meyle Exhaust Camshaft Position Sensor - BMW S54 S62
Meyle Exhaust Camshaft Position Sensor - BMW S54 S62
5X Entries Into Our F80 M3 Sweepstakes 2X Entries For Our Spin To Win Sweepstakes!
Meyle - Corporate Logo
T#:55497462
Part#: 3148000038
In Stock
New Item
$ 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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Genuine BMW Camshaft Position Sensor Connector Repair Kit
Genuine BMW Camshaft Position Sensor Connector Repair Kit
Genuine BMW - Corporate Logo
T#:58052445
Part#: 12527507526KT2
In Stock
New Item
$ 25.18 USD
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$ 25.18 USD
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SEG Automotive Alternator - SEG Automotive 0124.525.588 - 12317541694 - E46 325i 325Ci 330Ci, E60 525i 530i, E83 X3
SEG Automotive Alternator - SEG Automotive 0124.525.588 - 12317541694...
SEG Automotive - Corporate Logo
T#:54851984
Part#: 12317541694
Ships in 2 Business Days
New Item
$ 521.99

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

$ 470.99 USD
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$ 470.99 USD
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SEG Automotive Alternator - SEG Automotive 0124.515.223 - 12317519618 - E46
SEG Automotive Alternator - SEG Automotive 0124.515.223 - 12317519618...
SEG Automotive - Corporate Logo
T#:54851980
Part#: 12317519618
Ships on Dec 8, 2026
New Item
$ 503.99

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

$ 500.99 USD
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$ 500.99 USD
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Wire Pinning Kit - MLK 1.2 Female Jack
Wire Pinning Kit - MLK 1.2 Female Jack
Genuine BMW - Corporate Logo
T#:55281746
Part#: 125275WRKT
Ships in 1-2 days
New Item
$ 37.40 USD
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$ 37.40 USD
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This Genuine BMW wiring repair kit is the ideal solution to refresh worn-out terminal connections in your Ultimate Driving Machine.
SEG Automotive New 150A Alternator - 0124.525.561 - E21, E30, E36, E46, E9x, E8x, E60
SEG Automotive New 150A Alternator - 0124.525.561 - E21, E30, E36, E4...
SEG Automotive - Corporate Logo
T#:58965212
Part#: 0124.525.561
Ships on Dec 8, 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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SEG Automotive New 120A Alternator - 0124.515.052 - E46, E39 525i 530i, E53 X5
SEG Automotive New 120A Alternator - 0124.515.052 - E46, E39 525i 530...
SEG Automotive - Corporate Logo
T#:58965210
Part#: 0124.515.052
Ships on Dec 8, 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.
SEG Automotive New Alternator - 0124.525.523 - E46 325i 325Ci 330Ci, E60 525i 530i, E83 X3
SEG Automotive New Alternator - 0124.525.523 - E46 325i 325Ci 330Ci, ...
SEG Automotive - Corporate Logo
T#:58965213
Part#: 0124.525.523
Ships on Dec 8, 2026
New Item
$ 495.99 USD
Free Shipping on orders $49 and up
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$ 495.99 USD
Free Shipping on orders $49 and up
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Your BMW's charging system powers everything from ignition to infotainment, so a weak alternator affects the whole car.
Meyle Air Temperature Sensor - 13621739510 - E36, E46, E39, E38, E83, E53
Meyle Air Temperature Sensor - 13621739510 - E36, E46, E39, E38, E83,...
5X Entries Into Our F80 M3 Sweepstakes 2X Entries For Our Spin To Win Sweepstakes!
Meyle - Corporate Logo
T#:55281743
Part#: 13621739510
Ships on Dec 7, 2026
New Item
$ 21.99 USD
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$ 21.99 USD
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Meyle Camshaft Position Sensor - 12147518628 - 3, 5, 6, 7 Series, X3, X5
Meyle Camshaft Position Sensor - 12147518628 - 3, 5, 6, 7 Series, X3,...
5X Entries Into Our F80 M3 Sweepstakes 2X Entries For Our Spin To Win Sweepstakes!
Meyle - Corporate Logo
T#:59991931
Part#: 12147518628
Ships on Dec 7, 2026
New Item
$ 33.99 USD
Free Shipping on orders $49 and up
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$ 33.99 USD
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Meyle S54 M3 Crankshaft Speed Sensor - 13627548994 - E46 M3
Meyle S54 M3 Crankshaft Speed Sensor - 13627548994 - E46 M3
5X Entries Into Our F80 M3 Sweepstakes 2X Entries For Our Spin To Win Sweepstakes!
Meyle - Corporate Logo
T#:59991872
Part#: 13627548994
Ships on Dec 7, 2026
New Item
$ 41.99 USD
Free Shipping on orders $49 and up
Add to Wish List
$ 41.99 USD
Free Shipping on orders $49 and up
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