BMW Electrical Sensors, Switches, & Relays for BMW 3 Series F34 (2014+)

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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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Innovate Motorsports - Corporate Logo
T#:28836410
Part#: 38770
In Stock at Vendor
$ 212.99 USD
Free Shipping on orders $49 and up

Features & Benefits:

Two configurable linear 0-5V analog outputs Ability to calibrate O2 sensors for maximum accuracy Includes LC-2 controller and Bosch wideband O2 sensor Comes with a program cable, manual, and a 10 ft. sensor cable Includes a 1-inch mild steel exhaust bung Innovate MTS serial in/out capability Integrated dual-color status LED (green/red) Patented DirectDigital™ wideband sensor control Positive lock connectors for all connections Real-time display data on screen or with the powerful LogWorks software Range:

AFR (Air-Fuel Ratio) range from 7.4:1 to 22.4:1 (0.5 to 1.5 lambda)

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Hella - Corporate Logo
T#:592707
Part#: 2768551
Ships in 9 Business Days
$ 30.99 USD
Free Shipping on orders $49 and up
Disc Type High-Tone, 12 V, 400 Hz with Bracket
Hella - Corporate Logo
T#:590880
Part#: 2768082
Ships on Oct 7, 2026
$ 36.99 USD
Free Shipping on orders $49 and up
Disc Type Low-Tone, 12 V, 335 Hz with Bracket

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
Free Shipping on orders $49 and up
$ 124.99 USD
Free Shipping on orders $49 and up
Get noticed with this air horn kit from Hella!

Burger Motorsports - Corporate Logo
T#:599637
Part#: TYPEB4BARADAPTER
Back Ordered
$ 35.00 USD
Free Shipping on orders $49 and up
Use these plug and play adapters to quickly adapt a 4bar TMAP sensor to your N54/N55/S55 BMW, raising the boost maximum boost range from 20psi factory up to 43psi. For very high boost applications, this 4 BAR adapter can be used which requires Bosch 4 BAR sensor (Part # 281002576). SENSOR NOT INCLUDED, Please see T#587716
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Crankshaft Position Sensor
5X Entries Into Our F80 M3 Sweepstakes
Meyle - Corporate Logo
T#:55030834
Part#: 3148100013
In Stock
New Item
$ 36.99 USD
Free Shipping on orders $49 and up
This Meyle Crankshaft Position Sensor is the perfect solution for restoring the critical engine speed data your ECU relies on.

Hella - Corporate Logo
T#:592718
Part#: 965400001
In Stock
$ 14.99 USD
Free Shipping on orders $49 and up
12V 30A SPST relay with bracket
Hella - Corporate Logo
T#:592716
Part#: 7424011
Ships in 1 Business Day
$ 17.99 USD
Free Shipping on orders $49 and up

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 - Corporate Logo
T#:28869559
Part#: 7424001
In Stock
$ 17.99 USD
Free Shipping on orders $49 and up
Universal fit. Not direct fit.

Performance Tool - Corporate Logo
T#:1809154
Part#: W5368
In Stock
$ 13.68 USD
Free Shipping on orders $49 and up
A must for any toolbox.
Vargas Turbo Technologies - Corporate Logo
T#:51672717
Part#: VTT-MAP-HARNESS
Ships in 10 Business Days
New Item
$ 59.99 USD
Free Shipping
$ 59.99 USD
Free Shipping
As part of the VTT-FAB fabrication line, this extension harness is designed for builders and tuners who need flexibility.
Vargas Turbo Technologies - Corporate Logo
T#:52129729
Part#: VTT56BSENSKIT64
Ships in 10 Business Days
New Item
$ 209.99 USD
Free Shipping
$ 209.99 USD
Free Shipping
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.


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
Free Shipping
$ 49.99 USD
Free Shipping
Simplify your next fabrication project with the VTT-FAB series Coolant Extension Harness.
Knock Sensor
5X Entries Into Our F80 M3 Sweepstakes
Meyle - Corporate Logo
T#:55353615
Part#: 12141716055
Ships on Oct 2, 2026
New Item
$ 28.99 USD
$ 28.99 USD
This Meyle replacement knock sensor is the perfect solution for keeping your high-performance engine safe and running at its absolute peak.
Hella - Corporate Logo
T#:583197
Part#: 61219117877
Special Order: No Guaranteed ETA
$ 150.99 USD
Free Shipping
$ 150.99 USD
Free Shipping
Cable for battery

Hella - Corporate Logo
T#:599887
Part#: 13627602038
Special Order: No Guaranteed ETA
$ 151.99 USD
Free Shipping
$ 151.99 USD
Free Shipping

Meyle Crankshaft Pulse Sensor - BMW EXX, FXX
5X Entries Into Our F80 M3 Sweepstakes
Meyle - Corporate Logo
T#:52762518
Part#: 314810014
Ships on Oct 2, 2026
New Item
$ 19.99 USD
Free Shipping on orders $49 and up
Revitalize your vehicle’s performance and reliability with the MEYLE Crankshaft Pulse Sensor.
MEYLE Crank Position Sensor - BMW E46, E90
5X Entries Into Our F80 M3 Sweepstakes
Meyle - Corporate Logo
T#:52621846
Part#: MPS0126
Ships on Oct 2, 2026
New Item
$ 29.99 USD
Free Shipping on orders $49 and up
The Meyle MPS0126 Crankshaft Position Sensor is a robust replacement for aging or failing factory sensors that often trigger P0335 or P0339 trouble codes.