BMW Electrical Sensors, Switches, & Relays for BMW 3 Series G20 (2019+)

Clear BMW chassis

Please ensure your correct model is selected

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.

Sub-Categories

Sort By:

Plug And Play ReFlex Plus Install Harness - S58/B58
2X Entries For Our Spin To Win Sweepstakes!
Precision Raceworks - Corporate Logo
T#:35761669
Part#: 201-0409
In Stock
New Item
$ 203.99 USD
Free Shipping on orders $49 and up
The **Precision Raceworks S58/B58 Plug-and-Play Install Harness for the Motiv ReFlex+** is certified by Motiv Motorsports and is an essential upgrade for anyone integrating a ReFlex+ into their S58 or B58 vehicle. This Harness replaces only the signal and power sub harness portion of the Motiv Reflex. Standard universal Motiv ReFlex Plus harness required for use of this Plug and Play Harness - ES#4810312 / ES#4810314 This innovative harness eliminates the need for cutting, crimping, or splicing into your factory wiring, providing a straightforward, fully reversible installation. Simply plug it in, and you're ready to go! ### Why Choose the Precision Raceworks Harness? Although the main harness included with the Motiv ReFlex+ is well-designed, its standard sub-harness requires splicing into the factory wiring. Precision Raceworks addresses this by offering a plug-and-play replacement for the sub-harness. This solution retains the high-quality main harness, avoids unnecessary costs, and simplifies installation for seamless performance. ### Key Features of the Precision Raceworks X58 Harness: - **Motiv Motorsports Certified**, ensuring complete compatibility. - **100% Plug-and-Play** for a quick, hassle-free installation. - **Compatible with Tuning Platforms** such as MHD, MHD+, EcuTek, and BM3. - **Premium Build Quality**, manufactured in an ISO 9001-certified facility using automotive-grade wiring. - **Fast Installation**, completed in as little as one hour. - **Reversible Setup**, preserving the factory harness with no permanent modifications. The Precision Raceworks harness is the ideal choice for ReFlex+ users seeking a reliable, cost-effective, and user-friendly solution without altering their vehicle's original wiring.
Show More Show Less
Precision Raceworks Ethanol Sensor Breakout Harness
2X Entries For Our Spin To Win Sweepstakes!
Precision Raceworks - Corporate Logo
T#:35559424
Part#: 201-0411
Ships Jul 7, 2025
$ 35.99 USD
Free Shipping on orders $49 and up
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
Show More Show Less
OMP - Corporate Logo
T#:1614
Part#: EA-462
Ships Jul 14, 2025
$ 65.00 USD
Free Shipping
$ 65.00 USD
Free Shipping
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.
Show More Show Less

Wire With Terminals For 90 Degree 6 Pin Bulkhead - Orange
2X Entries For Our Spin To Win Sweepstakes!
Precision Raceworks - Corporate Logo
T#:38161698
Part#: 201-0360-ORG
Ships Jul 11, 2025
New Item
$ 4.99 USD
$ 4.99 USD
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
2X Entries For Our Spin To Win Sweepstakes!
Precision Raceworks - Corporate Logo
T#:38161709
Part#: 201-0361-BLK
Ships Jul 11, 2025
New Item
$ 3.99 USD
$ 3.99 USD
Upgrade any wiring system with this optimal solution, ensuring reliability and durability in any demanding automotive application. Black in color and 18 Gauge.
Precision Raceworks - Corporate Logo
T#:38161739
Part#: 501-0090
Ships Jul 11, 2025
New Item
$ 26.99 USD
$ 26.99 USD
High-performance 2-wire electrical bulkhead designed for seamless pass-through of dual 12GA wires. Features a durable 3/8" NPT thread for secure, leak-free installation.

Wire With Terminals For 90 Degree 6 Pin Bulkhead - Blue
2X Entries For Our Spin To Win Sweepstakes!
Precision Raceworks - Corporate Logo
T#:38161703
Part#: 201-0360-BLU
Ships Jul 11, 2025
New Item
$ 4.99 USD
$ 4.99 USD
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 (White)
2X Entries For Our Spin To Win Sweepstakes!
Precision Raceworks - Corporate Logo
T#:38161693
Part#: 201-0360-WHT
Ships Jul 11, 2025
New Item
$ 4.99 USD
$ 4.99 USD
Upgrade any wiring system with this optimal solution, ensuring reliability and durability in any demanding automotive application. White in color and 12 Gauge.

Precision Raceworks - Corporate Logo
T#:38161711
Part#: 201-0360-BLK
Ships Jul 11, 2025
New Item
$ 4.99 USD
$ 4.99 USD
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 (Red)
2X Entries For Our Spin To Win Sweepstakes!
Precision Raceworks - Corporate Logo
T#:38161695
Part#: 201-0360-RED
Ships Jul 11, 2025
New Item
$ 4.99 USD
$ 4.99 USD
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 - Yellow
2X Entries For Our Spin To Win Sweepstakes!
Precision Raceworks - Corporate Logo
T#:38161692
Part#: 201-0360-YEL
Ships Jul 11, 2025
New Item
$ 4.99 USD
$ 4.99 USD
Upgrade any wiring system with this optimal solution, ensuring reliability and durability in any demanding automotive application. Yellow in color and 12 Gauge.
Precision Raceworks - Corporate Logo
T#:38161710
Part#: 201-0362
Ships Jul 11, 2025
New Item
$ 4.99 USD
$ 4.99 USD
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 (Green)
2X Entries For Our Spin To Win Sweepstakes!
Precision Raceworks - Corporate Logo
T#:38161687
Part#: 201-0361-GRN
Ships Jul 11, 2025
New Item
$ 3.99 USD
$ 3.99 USD
Upgrade any wiring system with this optimal solution, ensuring reliability and durability in any demanding automotive application. Green in color and 18 Gauge.