BMW Electrical Sensors, Switches, & Relays for BMW F85 X5 M S63 4.4L

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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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BMW B46 B48 Motiv ReFlex Plug-n-Play Ethanol Sensor Harness
BMW B46 B48 Motiv ReFlex Plug-n-Play Ethanol Sensor Harness
For Vehicles With Motiv ReFlex Unit Currently Installed Only
Motiv Motorsports - Corporate Logo
T#:22723690
Part#: 101-0212
In Stock
$ 49.00 USD
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$ 49.00 USD
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BMW B46 B48 Motiv ReFlex Plug-n-Play Ethanol Sensor Harness simplifies the integration of an ethanol content sensor into your BMW's Re|Flex system. This harness is designed to enhance your vehicle's performance by scaling the sequential port injection based on real-time ethanol content, eliminating the need for manual adjustments. Key benefits include:

  • Effortless Installation: Plug-n-play design makes it easy to connect an ethanol content sensor without extensive modifications.
  • Real-Time Adjustments: Allows for automatic scaling of port injection based on real-time ethanol content, optimizing engine performance.
  • Seamless Integration: For CANbus integrated vehicles, it facilitates integration with the factory DME/ECU (pending feature release by tuning platforms).
  • No Manual Flashes Required: Removes the need for ground disconnection or map switching on your port injection controller.

Please note that the ethanol sensor is not included with this harness.

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URO Manifold Absolute Pressure (MAP) Sensor - BMW N54 N20 N26 S55 S63
URO Manifold Absolute Pressure (MAP) Sensor - BMW N54 N20 N26 S55 S63...
For vehicles with a production date from 07/2018+
2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
URO - Corporate Logo
T#:36032311
Part#: 13628644433
In Stock
$ 71.99 USD
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$ 71.99 USD
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The MAP sensor, or manifold absolute pressure sensor, works with the engine computer to set the fuel curve and give readings to the engine computer. If yours is faulty, it may cause improper running, rich or lean fuel curves, or other general performance issues. Replace yours with this unit to keep your engine running at full potential. For N54 applications, you will need adapter harness T#583821- This TMAP sensor is typically used in high-boost applications for the N54
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Motiv ReFlex+ Control Unit
Motiv ReFlex+ Control Unit
Motiv Motorsports - Corporate Logo
T#:29101684
Part#: 900.1001
In Stock
$ 729.00 USD
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$ 729.00 USD
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The motive ReFlex+ Control Unit is an advanced I/O integration module that allows precise control of aftermarket components and sends data to the factory DME (ECU) via CANbus communication, expanding performance tuning capabilities. This control unit allows for precise control of fuel pumps, methanol injection kits, nitrous kits, boost controllers, relay triggers, port injection systems, flex fuel systems, and more. Supporting sequential port injection for up to eight injectors and real-time monitoring of injectors, this unit is a great choice for precise control of fuel delivery to your engine.
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ReFlex+ Install Harness - Flying Lead
ReFlex+ Install Harness - Flying Lead
Motiv Motorsports - Corporate Logo
T#:29201083
Part#: 900.1016
In Stock
$ 95.00 USD
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$ 95.00 USD
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A flying lead harness is a wiring harness that is unterminated at one end and has an excess length of wire so that installation can be customized by the end user. That makes this section of the ReFlex+ Install Harness truly universal. On one end, this harness has an 8-pin connector to plug into any one of our ReFlex+ Main Injector Harnesses. The other end of each wire is unterminated and will be connected to the appropriate sensor, ground, or power supply based on installation instructions. Each harness has a wire for: Switched +12v Input w/ inline fuse +5v Input Ground Can HI Can Lo Cam Sensor Signal Crank Sensor Signal Map Sensor Signal
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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
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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Hella Air Horn Kit
Hella Air Horn Kit
Hella - Corporate Logo
T#:592708
Part#: 3001651
In Stock at Vendor
$ 143.99

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

$ 139.99 USD
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$ 139.99 USD
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Get noticed with this air horn kit from Hella!
ReFlex+ Install Kit
ReFlex+ Install Kit
Motiv Motorsports - Corporate Logo
T#:29267513
Part#: 400.1001
In Stock
$ 15.00 USD
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$ 15.00 USD
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Hella Horn - High-Tone
Hella Horn - High-Tone
Hella - Corporate Logo
T#:592716
Part#: 7424011
In Stock
$ 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 Relay
Hella Relay
Hella - Corporate Logo
T#:592718
Part#: 965400001
Ships in 10 Business Days
$ 14.99 USD
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$ 14.99 USD
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12V 30A SPST relay with bracket
Electrical Connector - Priced Each
Electrical Connector - Priced Each
2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
URO - Corporate Logo
T#:367145
Part#: 61132359999
Ships in 2 Business Days
$ 18.99 USD
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$ 18.99 USD
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2 pin used in many locations on late model BMWs
Hella Horn - Low-Tone
Hella Horn - Low-Tone
Hella - Corporate Logo
T#:28869559
Part#: 7424001
In Stock
$ 17.99 USD
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$ 17.99 USD
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Universal fit. Not direct fit.
URO Crankshaft Position Sensor - BMW N63N S63N S63R
URO Crankshaft Position Sensor - BMW N63N S63N S63R
2X Entries For Our G87 M2 Sweepstakes!
URO - Corporate Logo
T#:43750199
Part#: 13627628741
Ships in 2 Business Days
$ 55.99 USD
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$ 55.99 USD
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Crank position sensors report the position of the crankshaft to the ECU/DME to control iginition timing. A bad crank position sensor will commonly cause a no-start situation as faulty readings could lead to engine damage.
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ReFlex Lite: Advanced Sequential Injector Controller - V8
ReFlex Lite: Advanced Sequential Injector Controller - V8
Motiv Motorsports - Corporate Logo
T#:29234300
Part#: 910.1012
Ships in 5 Business Days
$ 499.00 USD
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$ 499.00 USD
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The ReFlex LITE is a simple yet elegant fueling solution for direct injected vehicles that need to add more fuel by installing a port injection system to keep up with their modifications to the vehicle. Using the same precise form of sequential fuel injection as the ReFlex+, the ReFlex LITE brings a more affordable fuel controller without the additional features of the ReFlex+. Sequential port fuel injection for v-8 engines Firmware and maps are available for multiple vehicles FREE on our website High resolution calibration tables 24x24 cell RPM vs MAP 0-48psi MAP pressure range 250RPM increments up to 8500RPM High resolution datalogging Fault detection status available to monitor in TunerPRO RT Compact in size Universal fitment Simple installation Please Note: The ReFlex LITE does NOT have the ability to analyze and transmit ethanol content to an ECU.
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ReFlex Lite Injector Harness - V8
ReFlex Lite Injector Harness - V8
Motiv Motorsports - Corporate Logo
T#:29234314
Part#: 900.1014
Ships in 5 Business Days
$ 295.00 USD
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$ 295.00 USD
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Required when installing a Motiv ReFlex Lite to your V8 powered BMW! Includes x8 injector leads and direct, plug-in adapter to the ReFlex Lite Control Unit!

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