SEG Automotive 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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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

$ 468.99 USD
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$ 468.99 USD
Free Shipping on orders $49 and up
Add to Wish List
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

$ 455.99 USD
Free Shipping on orders $49 and up
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$ 455.99 USD
Free Shipping on orders $49 and up
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New Alternator
New Alternator
SEG Automotive - Corporate Logo
T#:58965213
Part#: 0124.525.523
Ships on Oct 30, 2026
New Item
$ 495.99 USD
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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.
New 150A Alternator
New 150A Alternator
SEG Automotive - Corporate Logo
T#:58965212
Part#: 0124.525.561
Ships on Oct 30, 2026
New Item
$ 487.99 USD
Free Shipping on orders $49 and up
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$ 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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New 120A Alternator
New 120A Alternator
SEG Automotive - Corporate Logo
T#:58965210
Part#: 0124.515.052
Ships on Oct 30, 2026
New Item
$ 485.99 USD
Free Shipping on orders $49 and up
Add to Wish List
$ 485.99 USD
Free Shipping on orders $49 and up
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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.

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