BMW Electrical Sensors, Switches, & Relays for BMW 3 Series F30 (2012+)

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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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Hella Hella Horn - High Tone
Hella Hella Horn - High Tone
Hella - Corporate Logo
T#:592707
Part#: 2768551
In Stock
$ 30.99 USD
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$ 30.99 USD
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Disc Type High-Tone, 12 V, 400 Hz with Bracket
Hella Hella Horn - Low Tone
Hella Hella Horn - Low Tone
Hella - Corporate Logo
T#:590880
Part#: 2768082
In Stock
$ 36.99 USD
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$ 36.99 USD
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Disc Type Low-Tone, 12 V, 335 Hz with Bracket
Bosch Starter Motor With Hardware
Bosch Starter Motor With Hardware
10X Entries Into Our F80 M3 Sweepstakes
Packaged by Turner - Corporate Logo
T#:56110332
Part#: SR0492NKT4
In Stock
New Item
$ 273.99

This product was last offered at the strikethrough price on
08-14-2026

$ 261.99 USD
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$ 261.99 USD
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At the core is a brand-new Bosch Starter Motor, engineered to withstand extreme operating conditions while delivering immediate cranking speed. This kit includes also the required Genuine BMW Aluminum Mounting Screw Set.
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Hella Air Horn Kit
Hella Air Horn Kit
Hella - Corporate Logo
T#:592708
Part#: 3001651
Ships in 1 Business Day
$ 143.99

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

$ 124.99 USD
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$ 124.99 USD
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Get noticed with this air horn kit from Hella!
Crankshaft Position Sensor
Crankshaft Position Sensor
5X Entries Into Our F80 M3 Sweepstakes
Meyle - Corporate Logo
T#:55030834
Part#: 3148100013
In Stock
New Item
$ 36.99 USD
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$ 36.99 USD
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This Meyle Crankshaft Position Sensor is the perfect solution for restoring the critical engine speed data your ECU relies on.
Hella Horn - High-Tone
Hella Horn - High-Tone
Hella - Corporate Logo
T#:592716
Part#: 7424011
Ships in 3 Business Days
$ 17.99 USD
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$ 17.99 USD
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Upgrade the sound of your BMW or MINI with the Hella Horn - High-Tone. This high-quality horn delivers a powerful and attention-grabbing sound, enhancing safety on the road. Designed for easy installation, it provides a quick and effective way to improve the audible presence of your vehicle.

  • Powerful and attention-grabbing sound
  • Enhances safety on the road
  • Easy installation for convenience
  • Compatible with BMW and MINI models
  • High-quality construction for durability

Enhance the audible presence of your BMW or MINI with the Hella Horn - High-Tone, ensuring you're heard when it matters most.

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Hella Horn - Low-Tone
Hella Horn - Low-Tone
Hella - Corporate Logo
T#:28869559
Part#: 7424001
Ships in 7 Business Days
$ 17.99 USD
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$ 17.99 USD
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Universal fit. Not direct fit.
Hella Relay
Hella Relay
Hella - Corporate Logo
T#:592718
Part#: 965400001
In Stock
$ 14.99 USD
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$ 14.99 USD
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12V 30A SPST relay with bracket
120 pc Fuse Assortment
120 pc Fuse Assortment
Performance Tool - Corporate Logo
T#:1809154
Part#: W5368
In Stock
$ 13.68 USD
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$ 13.68 USD
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A must for any toolbox.
Battery Cable - With Pole
Battery Cable - With Pole
Bapmic - Corporate Logo
T#:54388517
Part#: 61129259425
Ships in 1 Business Day
New Item
$ 126.99 USD
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$ 126.99 USD
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On the track or on the street, your BMW’s electrical architecture demands absolute consistency. A degraded positive battery cable introduces unwanted resistance, leading to weak starts, alternator strain, and erratic module behavior. When it’s time to replace a compromised factory cable, you don’t need over-hyped marketing—you need a part that fits precisely and restores factory grid integrity.
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Vargas Coolant Level Extension Harness - BMW B48/B58/S58
Vargas Coolant Level Extension Harness - BMW B48/B58/S58
2X Entries Into Our F80 M3 Sweepstakes
Vargas Turbo Technologies - Corporate Logo
T#:51813310
Part#: VTT-FAB-HC
Ships in 10 Business Days
New Item
$ 49.99 USD
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$ 49.99 USD
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Simplify your next fabrication project with the VTT-FAB series Coolant Extension Harness.
Vargas MAP Sensor Extension Harness - BMW B58, N54, N55, S55, S58, S63
Vargas MAP Sensor Extension Harness - BMW B58, N54, N55, S55, S58, S6...
2X Entries Into Our F80 M3 Sweepstakes
Vargas Turbo Technologies - Corporate Logo
T#:51672717
Part#: VTT-MAP-HARNESS
Ships in 10 Business Days
New Item
$ 59.99 USD
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$ 59.99 USD
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As part of the VTT-FAB fabrication line, this extension harness is designed for builders and tuners who need flexibility.
Vargas Plug & Play Pre And Post Throttle MAP Sensor Kit - 6B 4W - BMW B58/S55/S58
Vargas Plug & Play Pre And Post Throttle MAP Sensor Kit - 6B 4W - BMW...
2X Entries Into Our F80 M3 Sweepstakes
Vargas Turbo Technologies - Corporate Logo
T#:52129729
Part#: VTT56BSENSKIT64
Ships in 10 Business Days
New Item
$ 209.99 USD
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$ 209.99 USD
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The VTT 6-Bar MAP sensor kit provides the necessary overhead to monitor boost levels with a linear voltage scale that makes software calibration straightforward.
Knock Sensor
Knock Sensor
5X Entries Into Our F80 M3 Sweepstakes
Meyle - Corporate Logo
T#:55353615
Part#: 12141716055
Ships on Oct 22, 2026
New Item
$ 28.99 USD
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$ 28.99 USD
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This Meyle replacement knock sensor is the perfect solution for keeping your high-performance engine safe and running at its absolute peak.
Hella Negative Battery Cable - F22, F23, F30, F31, F32, F33, F34, F36, F87
Hella Negative Battery Cable - F22, F23, F30, F31, F32, F33, F34, F3...
Hella - Corporate Logo
T#:583197
Part#: 61219117877
Special Order: No Guaranteed ETA
$ 150.99 USD
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$ 150.99 USD
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Cable for battery
Mass Air Flow Sensor (MAF)
Mass Air Flow Sensor (MAF)
Hella - Corporate Logo
T#:599887
Part#: 13627602038
Special Order: No Guaranteed ETA
$ 151.99 USD
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$ 151.99 USD
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Meyle Crankshaft Pulse Sensor - BMW EXX, FXX
Meyle Crankshaft Pulse Sensor - BMW EXX, FXX
5X Entries Into Our F80 M3 Sweepstakes
Meyle - Corporate Logo
T#:52762518
Part#: 314810014
Ships on Oct 22, 2026
New Item
$ 19.99 USD
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$ 19.99 USD
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Revitalize your vehicle’s performance and reliability with the MEYLE Crankshaft Pulse Sensor.
Intake air temperature sensor
Intake air temperature sensor
5X Entries Into Our F80 M3 Sweepstakes
Meyle - Corporate Logo
T#:58307544
Part#: 13628519445
Ships in 8 Business Days
New Item
$ 25.99 USD
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$ 25.99 USD
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MEYLE Crank Position Sensor - BMW E46, E90
MEYLE Crank Position Sensor - BMW E46, E90
5X Entries Into Our F80 M3 Sweepstakes
Meyle - Corporate Logo
T#:52621846
Part#: MPS0126
Ships on Oct 22, 2026
New Item
$ 29.99 USD
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$ 29.99 USD
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The Meyle MPS0126 Crankshaft Position Sensor is a robust replacement for aging or failing factory sensors that often trigger P0335 or P0339 trouble codes.

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