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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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 1 Business Day
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 7, 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 day
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 7, 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 7, 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 7, 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.
Febi Alternator - 12317501690 - E46, E39 525i 528i 530i, E53 X5
Febi Alternator - 12317501690 - E46, E39 525i 528i 530i, E53 X5 ...
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.
Febi Crankshaft Sensor With Sealing Ring - 12141709616 - E36, E46, E39, E60, E83, E53
Febi Crankshaft Sensor With Sealing Ring - 12141709616 - E36, E46, E3...
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.
Febi M54 Starter Motor - 12412354693 - E46, E39, E60, E83
Febi M54 Starter Motor - 12412354693 - E46, E39, E60, E83
Febi - Corporate Logo
T#:56724716
Part#: 12412354693
Special Order: No Guaranteed ETA
New Item
$ 147.99 USD
Free Shipping on orders $49 and up
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$ 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.

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