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BMW Electrical Sensors, Switches, & Relays for BMW 3 Series E93 (2007-2013)

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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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New Alternator - 180 Amp

10X Entries Into Our F80 M3 Sweepstakes

T#:26438187

Part#: 12317558220

In Stock

Sale - Save 10% $ 294.99

This product was last offered at the strikethrough price on
06-30-2026

$ 265.49 USD

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Sale - Save 10%

$ 294.99

This product was last offered at the strikethrough price on
06-30-2026

$ 265.49 USD

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Alternator - 180amp

10X Entries Into Our F80 M3 Sweepstakes

T#:26438185

Part#: 12317837981

In Stock

Sale - Save 15% $ 304.99

This product was last offered at the strikethrough price on
05-03-2026

$ 259.24 USD

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Sale - Save 15%

$ 304.99

This product was last offered at the strikethrough price on
05-03-2026

$ 259.24 USD

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Innovate LC-2 Wideband O2 Controller Kit

T#:28836410

Part#: 38770

In Stock at Vendor

$ 212.99 USD

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$ 212.99 USD

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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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Bav Auto Intake Air Temperature Sensor - BMW E9X M3 S65

10X Entries Into Our F80 M3 Sweepstakes

T#:639824

Part#: 13627792203

Ships on Jan 12, 2027

$ 24.99 USD

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$ 24.99 USD

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This sensor provides your BMW's control unit with intake temperature readings in order to run optimally in any condition. If this sensor has failed, your BMW may be suffering from more performance loss than you realize. Replace your IAT sensor to ensure proper temperature readings and restore lost performance! From 1974 to 2019, Bavarian Autosport was one of the premier vendors for BMW and MINI auto parts. We are happy to preserve the Bav Auto legacy by continuing to carry their high-quality products into the future. All Bav Auto parts will remain unchanged in design and sourced from the same OEM suppliers to ensure long-lasting reliability. We trust these parts, accessories, and upgrades so confidently that we back every Bavarian Autosport branded component with a 2-year warranty.

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Superior Bass Sports Horn Kit 330Hz + 400Hz 112Db

T#:31158805

Part#: 85115

Ships on Nov 4, 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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Bass Tone Sports Horn Kit 400Hz + 500Hz, 115Db

T#:31589317

Part#: 85110

In Stock

$ 77.99 USD

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$ 77.99 USD

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Bav Auto Crankshaft Position Sensor - Multiple BMWs

10X Entries Into Our F80 M3 Sweepstakes

T#:639826

Part#: 13627525015

Special Order: No Guaranteed ETA

$ 67.99 USD

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$ 67.99 USD

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This crankshaft position sensor provides the ECU with the engine speed signal. It is mounted in either the engine block or the bell housing of the transmission on most cars. From 1974 to 2019, Bavarian Autosport was one of the premier vendors for BMW and MINI auto parts. We are happy to preserve the Bav Auto legacy by continuing to carry their high-quality products into the future. All Bav Auto parts will remain unchanged in design and sourced from the same OEM suppliers to ensure long-lasting reliability. We trust these parts, accessories, and upgrades so confidently that we back every Bavarian Autosport branded component with a 2-year warranty.

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120 pc Fuse Assortment

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.

Vargas MAP Sensor Extension Harness - BMW B58, N54, N55, S55, S58, S6...

2X Entries Into Our F80 M3 Sweepstakes

T#:51672717

Part#: VTT-MAP-HARNESS

Ships on Oct 27, 2026

$ 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 USB To Serial For HPFP Controller - BMW N54

2X Entries Into Our F80 M3 Sweepstakes

T#:51778112

Part#: N54-USB-SERIAL-H

Ships on Oct 27, 2026

$ 37.99 USD

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$ 37.99 USD

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Take full control of your N54’s fueling system with the Vargas Turbo Technologies USB to Serial adapter.

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