BMW Electrical Sensors, Switches, & Relays for BMW E9 3.0CS M30 3.0L

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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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Superior Bass Sports Horn Kit 330Hz + 400Hz 112Db
Superior Bass Sports Horn Kit 330Hz + 400Hz 112Db
PIAA - Corporate Logo
T#:31158805
Part#: 85115
Ships on Sep 17, 2026
$ 77.99 USD
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$ 77.99 USD
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Superior Bass Sports Horn Kit 330Hz + 400Hz 112Db

The Superior Bass Sports Horn Kit 330Hz + 400Hz 112Db is designed to make sure your presence is known with powerful, attention-grabbing sound. These high-performance sports horns feature:

  • Impressive Loudness: Delivers a powerful 112 decibels, ensuring you’re heard in any situation.
  • Dual Frequency: Includes 330Hz and 400Hz horns for a dynamic and distinct sound.
  • Lightweight & Durable: Constructed for easy installation with weather-resistant covers, built to withstand the elements.
  • Easy Installation: Quick and straightforward to install, enhancing vehicle safety with minimal effort.

The kit is a must-have for anyone looking to enhance their vehicle’s horn performance and visibility on the road.

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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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Bass Tone Sports Horn Kit 400Hz + 500Hz, 115Db
Bass Tone Sports Horn Kit 400Hz + 500Hz, 115Db
PIAA - Corporate Logo
T#:31589317
Part#: 85110
In Stock
$ 77.99 USD
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$ 77.99 USD
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Voltage Regulator
Voltage Regulator
Beru - Corporate Logo
T#:596879
Part#: 12321350052
In Stock at Vendor
$ 41.99

This product was last offered at the strikethrough price on
05-07-2026

$ 40.99 USD
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$ 40.99 USD
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If you are having issues with voltage peaking, lights fading in and out as your driving, or your battery keeps dying despite the car running, It could be the result of a faulty voltage regulator. Voltage regulators control the amount of power coming from the alternator.
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Liqui-Moly Battery Clamp Grease - 50 grams
Liqui-Moly Battery Clamp Grease - 50 grams
We Price Match - Give Us A Call or Chat!
Liqui-Moly - Corporate Logo
T#:1195997
Part#: 20244
In Stock
14% off MSRP $ 7.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 6.85 USD
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14% off MSRP
$ 7.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 6.85 USD
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Excellent corrosion protection for your battery and other connections
120 pc Fuse Assortment
120 pc Fuse Assortment
Performance Tool - Corporate Logo
T#:1809154
Part#: W5368
Ships in 1 Business Day
$ 13.68 USD
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$ 13.68 USD
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A must for any toolbox.
Battery Tender Plus Advanced Battery Charging System
Battery Tender Plus Advanced Battery Charging System
Battery Tender - Corporate Logo
T#:49892371
Part#: BTT0210128
In Stock at Vendor
New Item
$ 69.99 USD
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$ 69.99 USD
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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 Aug 7, 2026
New Item
$ 21.99 USD
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$ 21.99 USD
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