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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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OMP Battery Cut Off Switch / Kill Switch
OMP Battery Cut Off Switch / Kill Switch
OMP - Corporate Logo
T#:1614
Part#: EA-462
In Stock
$ 65.00 USD
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$ 65.00 USD
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OMP Battery Cut Off Switch / Kill Switch, for use in racecars as an emergency "kill switch", to depower the electrical system in the event of a crash or other emergency. This cut off switch is FIA approved, has 6 poles and alternator protection, as well as a removable key.
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Alternator Pulley - E82 E90 E92 E60
Alternator Pulley - E82 E90 E92 E60
We Price Match - Give Us A Call or Chat!
Ina - Corporate Logo
T#:19332
Part#: 12317570152
Ships in 4 Business Days
$ 66.99 USD
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$ 66.99 USD
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This OEM alternator pulley has a ratcheting mechanism inside that can wear out, causing a rattling sound. This mechanism allows the alternator to freewheel to a degree. This is only for the Valeo brand alternator/

This item fits the following BMWs:
2008+ E82 BMW 128i with N51 engine
2006-2007 E90 BMW 325i 325xi 330i 330xi - Sedan
2006-2007 E90 BMW 328i 328xi - Sedan with N51 engine
2006-2007 E91 BMW 325xi - Wagon
2007-2007 E92 BMW 328i 328xi 328i xDrive - Coupe with N51 engine
2006-2007 E60 BMW 525i 525xi 530i 530xi
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AUTOTECKNIC Dry Carbon Fiber Battery Terminal Cover - G87 M2
AUTOTECKNIC Dry Carbon Fiber Battery Terminal Cover - G87 M2 ...
AUTOTECKNIC - Corporate Logo
T#:21012623
Part#: ATK-BM-0420-G87
Ships in 8 Business Days
$ 495.00 USD
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$ 495.00 USD
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The boldly styled G87 already touts carbon features but carbon fiber is not very often displayed in the engine bay. If you are looking to give your engine bay some carbon spark, AUTOTECKNIC introduces you to their dry carbon battery terminal cover to beautify your engine bay and bring a smile to your face every time you open the hood of your S58 monster! Made from high-quality carbon, this product is sure to stand the test of time!
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Morimoto Standalone Can-Bus Wiring Harness - H4 / 9003 - Priced Each
Morimoto Standalone Can-Bus Wiring Harness - H4 / 9003 - Priced Each ...
Morimoto - Corporate Logo
T#:54388428
Part#: H240
Ships on Sep 2, 2026
New Item
$ 21.99 USD
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$ 21.99 USD
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OEM INA Alternator Pulley - Overrunning Type - E82, E88, E9x, F10, F22, F23, F25, F3x, F87
OEM INA Alternator Pulley - Overrunning Type - E82, E88, E9x, F10, F2...
Ina - Corporate Logo
T#:42167226
Part#: EA0141
Back Ordered
$ 71.99 USD
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$ 71.99 USD
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Whether you're replacing a failing alternator pulley or performing preventive maintenance, this Alternator Pulley ensures your BMW continues to perform with factory precision and reliability.
Accessory Drive Belt Kit - E34, E83
Accessory Drive Belt Kit - E34, E83
Ina - Corporate Logo
T#:42167237
Part#: FB0198K
Back Ordered
$ 166.99 USD
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$ 166.99 USD
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Ideal for scheduled maintenance or as a preventive repair, the Accessory Drive Belt Kit offers dependable performance and peace of mind for BMW owners looking to maintain factory-quality operation and longevity
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OEM INA Alternator Pulley - E60, E90
OEM INA Alternator Pulley - E60, E90
Ina - Corporate Logo
T#:42167235
Part#: EA0202
Back Ordered
$ 46.99

This product was last offered at the strikethrough price on
06-19-2026

$ 33.99 USD
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$ 33.99 USD
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Whether you have a failing component or are performing preventive maintenance, this INA Alternator Pulley from Turner Motorsport is the perfect choice to keep your BMW’s electrical and accessory systems operating at peak performance.
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