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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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New Alternator - 140amp | BMW E36 E34 M50 M52 S50 S52
New Alternator - 140amp | BMW E36 E34 M50 M52 S50 S52
Bavarian Autosport - Corporate Logo
T#:25042544
Part#: 12311744567
In Stock
Sale - Save 15% $ 219.99

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

$ 186.99 USD
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$ 219.99

This product was last offered at the strikethrough price on
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$ 186.99 USD
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New Alternator - 180 Amp
New Alternator - 180 Amp
Bavarian Autosport - Corporate Logo
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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$ 294.99

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

$ 265.49 USD
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Crankshaft Position Sensor - E36 (OBDI), E34 M50/S50
Crankshaft Position Sensor - E36 (OBDI), E34 M50/S50
Bavarian Autosport - Corporate Logo
T#:579816
Part#: 52380
In Stock
Sale - Save 20% $ 48.99

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

$ 39.19 USD
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$ 48.99

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05-03-2026

$ 39.19 USD
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Common cause of misfires, poor fuel economy, or a crank no start situation. If your M50 or S50 has any of these symptoms, this crankshaft position sensor from Bavarian Autosport is a likely fix.
Bav Auto Camshaft Position Sensor - BMW E36 E39 Z3 M52 S52
Bav Auto Camshaft Position Sensor - BMW E36 E39 Z3 M52 S52
Bavarian Autosport - Corporate Logo
T#:639841
Part#: 12141703221
In Stock
Sale - Save 20% $ 37.99

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

$ 30.39 USD
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$ 37.99

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05-03-2026

$ 30.39 USD
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Faulty camshaft sensors can lead to a number of issues such as hard starts, stalling at low speeds, and check engine (SES) lights. Restore your BMW's smooth operation and reliability by replacing it with a high-quality camshaft sensor from Bav Auto! 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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Alternator - 180amp
Alternator - 180amp
Bavarian Autosport - Corporate Logo
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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$ 304.99

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

$ 259.24 USD
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New Alternator - 120A
New Alternator - 120A
Bavarian Autosport - Corporate Logo
T#:25042543
Part#: 12317501690
In Stock
Sale - Save 20% $ 211.99

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

$ 169.59 USD
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Sale - Save 20%
$ 211.99

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

$ 169.59 USD
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Alternator - 120amp
Alternator - 120amp
Bavarian Autosport - Corporate Logo
T#:25042542
Part#: 12317831436
Ships on Sep 29, 2026
Sale - Save 20% $ 222.99

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

$ 178.39 USD
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$ 222.99

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

$ 178.39 USD
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Race German Fuse Replacement Kit
Race German Fuse Replacement Kit
Race German - Corporate Logo
T#:2602229
Part#: E30FUSEKIT
Ships in 1 Business Day
$ 35.99 USD
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$ 35.99 USD
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Complete set of fuses from OE BMW supplier for direct replacement of blown or mismatched fuses. Kit includes A complete set of new OEM fuses Extra fuses Fuse puller
Innovate LC-2 Wideband O2 Controller Kit
Innovate LC-2 Wideband O2 Controller Kit
Innovate Motorsports - Corporate Logo
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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Race German C101 Diagnosis Plug Firewall Bracket - E30
Race German C101 Diagnosis Plug Firewall Bracket - E30
Race German - Corporate Logo
T#:6827884
Part#: C101-HOLDER
Ships in 2 Business Days
$ 44.99 USD
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$ 44.99 USD
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Race German has devoted themselves to providing quality products for late model BMWs that cover both street and track applications. Race German has now grown their catalog to a wide variety of models and products geared towards keeping your car looking and running nice. BMW's original C101 bracket which connects to the firewall and holds the diagnosis port unfortunately over time becomes heat soaked and brittle. The OEM bracket, which is no longer available, also features a flawed hinge design that easily wears and breaks. Race German has devised a solution to this issue and developed a new bracket! This heavy duty C101 firewall bracket is completely plug and play. These brackets are CAD designed and feature a two piece design with stainless steel hardware.
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Race German Fuse Replacement Kit
Race German Fuse Replacement Kit
Race German - Corporate Logo
T#:2602224
Part#: E46FUSEKIT
Ships in 1 Business Day
$ 47.99 USD
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$ 47.99 USD
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Complete set of fuses from OE BMW supplier for direct replacement of blown or mismatched fuses. Kit includes A complete set of new OEM fuses Extra fuses Fuse puller
Bav Auto Camshaft Position Sensor - E38 740i 740iL 750iL
Bav Auto Camshaft Position Sensor - E38 740i 740iL 750iL
Bavarian Autosport - Corporate Logo
T#:639840
Part#: 12141742185
Back Ordered
Sale - Save 15% $ 66.99

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

$ 56.94 USD
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Sale - Save 15%
$ 66.99

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

$ 56.94 USD
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Faulty camshaft sensors can lead to a number of issues such as hard starts, stalling at low speeds, and check engine (SES) lights. Restore your BMW's smooth operation and reliability by replacing it with a high-quality camshaft sensor from Bav Auto! 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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Precision Raceworks Ethanol Sensor Breakout Harness
Precision Raceworks Ethanol Sensor Breakout Harness
Precision Raceworks - Corporate Logo
T#:35559424
Part#: 201-0411
Ships in 8 Business Days
$ 34.99 USD
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$ 34.99 USD
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n Ethanol Sensor Breakout Harness provides a clean wiring solution by splitting the signal from your ethanol content sensor between two analyzers, such as an ECU/controller and a gauge or Bluetooth display, without modifying your existing harness.his setup enables real-time ethanol level monitoring and facilitates comprehensive DME/ECU adjustments for enhanced automotive performance.citeturn0search0
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Race German Fuse Replacement Kit
Race German Fuse Replacement Kit
Race German - Corporate Logo
T#:2602226
Part#: E36FUSEKIT
In Stock
$ 41.99 USD
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$ 41.99 USD
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Complete set of fuses from OE BMW supplier for direct replacement of blown or mismatched fuses. Kit includes A complete set of new OEM fuses Extra fuses Fuse puller
Bav Auto Crankshaft Position Sensor - Multiple BMWs
Bav Auto Crankshaft Position Sensor - Multiple BMWs
Bavarian Autosport - Corporate Logo
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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Bav Auto Intake Air Temperature Sensor - BMW E9X M3 S65
Bav Auto Intake Air Temperature Sensor - BMW E9X M3 S65
Bavarian Autosport - Corporate Logo
T#:639824
Part#: 13627792203
In Stock
$ 24.99

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

$ 19.99 USD
Limited Qty Sale
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$ 24.99

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

$ 19.99 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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EV Charging Extension Cord - 50-foot NEMA 14-50
EV Charging Extension Cord - 50-foot NEMA 14-50
EVANNEX - Corporate Logo
T#:22987103
Part#: CHRG-EXT-50
In Stock
$ 359.99 USD
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$ 359.99 USD
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EVANNEX offers a versatile 50-foot charging cable extension compatible with NEMA 14-50 connectors, seamlessly integrating with home or mobile chargers. This extension cord augments your existing charger's reach by up to 70 feet, enabling access to distant power sources from your BMW or MINI vehicle.

Key benefits of EVANNEX's charging cable extension:

  • Extends charging range up to 70 feet from your vehicle.
  • Ergo Grip Handle facilitates easier unplugging of heavy power cords.
  • Built-in LED indicator for convenient power activation testing.
  • Enables charging from distant power sources like clothes dryer or AC outlets.

For enhanced charging accessibility during road trips, pair EVANNEX's extension with road trip charging adapters, allowing connection to popular RV hookups, dryer connections, air conditioner plugs, and more.

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EV Charging Extension Cord - 30-foot NEMA 14-50
EV Charging Extension Cord - 30-foot NEMA 14-50
EVANNEX - Corporate Logo
T#:22987081
Part#: CHRG-EXT
In Stock
$ 199.99 USD
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$ 199.99 USD
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The EVANNEX 30-foot charging cable extension integrates seamlessly with NEMA 14-50 connectors found in various home or mobile chargers.

Compatible with BMW or MINI electric vehicles, this extension cord extends the charging range to reach power sources up to 50 feet away.

  • Integration with most NEMA 14-50 chargers
  • Ability to connect to distant power sources
  • Ergo Grip Handle for secure handling
  • Built-in LED indicator for easy power activation confirmation
  • Enhanced charging accessibility for on-the-go use
  • Ideal for connecting to unconventional power outlets like RV hookups, dryers, or air conditioner plugs
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Wire With Terminals For 90 Degree 6 Pin Bulkhead (Red)
Wire With Terminals For 90 Degree 6 Pin Bulkhead (Red)
Precision Raceworks - Corporate Logo
T#:38161695
Part#: 201-0360-RED
Ships in 6 Business Days
$ 5.99 USD
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$ 5.99 USD
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Upgrade any wiring system with this optimal solution, ensuring reliability and durability in any demanding automotive application. Red in color and 12 Gauge.
Wire With Terminals For 90 Degree 6 Pin Bulkhead - Blue
Wire With Terminals For 90 Degree 6 Pin Bulkhead - Blue
Precision Raceworks - Corporate Logo
T#:38161703
Part#: 201-0360-BLU
Ships in 9 Business Days
$ 4.99 USD
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$ 4.99 USD
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Upgrade any wiring system with this optimal solution, ensuring reliability and durability in any demanding automotive application. Blue in color and 12 Gauge.
Wire With Terminals For 90 Degree 6 Pin Bulkhead - Black - Dual 18 Gauge
Wire With Terminals For 90 Degree 6 Pin Bulkhead - Black - Dual 18 Ga...
Precision Raceworks - Corporate Logo
T#:38161710
Part#: 201-0362
Ships in 9 Business Days
$ 4.99 USD
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$ 4.99 USD
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Upgrade any wiring system with this optimal solution, ensuring reliability and durability in any demanding automotive application. Black in color and 18 Gauge dual wire.
Wire With Terminals For 90 Degree 6 Pin Bulkhead (White)
Wire With Terminals For 90 Degree 6 Pin Bulkhead (White)
Precision Raceworks - Corporate Logo
T#:38161693
Part#: 201-0360-WHT
Ships in 9 Business Days
$ 4.99 USD
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$ 4.99 USD
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Upgrade any wiring system with this optimal solution, ensuring reliability and durability in any demanding automotive application. White in color and 12 Gauge.
Wire With Terminals For 90 Degree 6 Pin Bulkhead - Orange
Wire With Terminals For 90 Degree 6 Pin Bulkhead - Orange
Precision Raceworks - Corporate Logo
T#:38161698
Part#: 201-0360-ORG
Ships in 9 Business Days
$ 4.99 USD
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$ 4.99 USD
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Upgrade any wiring system with this optimal solution, ensuring reliability and durability in any demanding automotive application. Orange in color and 12 Gauge.
Wire With Terminals For 90 Degree 6 Pin Bulkhead (Black) 12 Gauge
Wire With Terminals For 90 Degree 6 Pin Bulkhead (Black) 12 Gauge ...
Precision Raceworks - Corporate Logo
T#:38161711
Part#: 201-0360-BLK
Ships in 9 Business Days
$ 4.99 USD
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$ 4.99 USD
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Upgrade any wiring system with this optimal solution, ensuring reliability and durability in any demanding automotive application. Black in color and 12 Gauge.
Wire With Terminals For 90 Degree 6 Pin Bulkhead - Yellow
Wire With Terminals For 90 Degree 6 Pin Bulkhead - Yellow
Precision Raceworks - Corporate Logo
T#:38161692
Part#: 201-0360-YEL
Ships in 9 Business Days
$ 4.99 USD
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$ 4.99 USD
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Upgrade any wiring system with this optimal solution, ensuring reliability and durability in any demanding automotive application. Yellow in color and 12 Gauge.
Wire With Terminals For 90 Degree 6 Pin Bulkhead (Green)
Wire With Terminals For 90 Degree 6 Pin Bulkhead (Green)
Precision Raceworks - Corporate Logo
T#:38161687
Part#: 201-0361-GRN
Ships in 9 Business Days
$ 3.99 USD
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$ 3.99 USD
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Upgrade any wiring system with this optimal solution, ensuring reliability and durability in any demanding automotive application. Green in color and 18 Gauge.
Bav Auto Temperature Sensor - BMW E39 E46 E9X E60 F01/02
Bav Auto Temperature Sensor - BMW E39 E46 E9X E60 F01/02
Bavarian Autosport - Corporate Logo
T#:639833
Part#: 13621433076
In Stock
Sale - Save 20% $ 14.99

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

$ 11.99 USD
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$ 14.99

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$ 11.99 USD
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This is the coolant temperature sensor used in many BMW models from the late-1990s to the mid-2010s. The engine computer relies on the coolant temp to set the fuel mapping for the engine. As the car warms up the computer changes the fuel mixture. If your car is running a bit rich (too much fuel) it could be because this sensor is failing and not sending the correct info to the computer. This sensor is located in a variety of places depending on the engine. But it's one of those easy replacement items 'while you're in there' when doing a water pump or thermostat replacement. 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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