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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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Plug And Play ReFlex Plus Install Harness - S58/B58

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T#:35761669

Part#: 201-0409

In Stock

$ 213.99

This product was last offered at the strikethrough price on
01-22-2026

$ 199.99 USD

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$ 199.99 USD

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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.

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Precision Raceworks Ethanol Sensor Breakout Harness

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T#:35559424

Part#: 201-0411

Ships in 4 Business Days

$ 35.99

This product was last offered at the strikethrough price on
01-22-2026

$ 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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Alternator Pulley - E82 E90 E92 E60

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T#:19332

Part#: 12317570152

Ships in 1-2 days

$ 66.99 USD

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$ 66.99 USD

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This OEM alternator pulley has a ratcheting mechanism inside that can wear out, causing a rattling sound. This mechanism allows the alternator to freewheel to a degree. This is only for the Valeo brand alternator/

This item fits the following BMWs:
2008+ E82 BMW 128i with N51 engine
2006-2007 E90 BMW 325i 325xi 330i 330xi - Sedan
2006-2007 E90 BMW 328i 328xi - Sedan with N51 engine
2006-2007 E91 BMW 325xi - Wagon
2007-2007 E92 BMW 328i 328xi 328i xDrive - Coupe with N51 engine
2006-2007 E60 BMW 525i 525xi 530i 530xi

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Wire With Terminals For 90 Degree 6 Pin Bulkhead (Red)

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T#:38161695

Part#: 201-0360-RED

Ships in 7 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 - Orange

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T#:38161698

Part#: 201-0360-ORG

Ships in 10 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 - Yellow

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T#:38161692

Part#: 201-0360-YEL

Ships in 10 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 (Black) 12 Gauge ...

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T#:38161711

Part#: 201-0360-BLK

Ships in 10 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 - Blue

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T#:38161703

Part#: 201-0360-BLU

Ships in 10 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 (White)

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T#:38161693

Part#: 201-0360-WHT

Ships in 10 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 - Black - Dual 18 Ga...

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T#:38161710

Part#: 201-0362

Ships in 10 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 (Green)

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T#:38161687

Part#: 201-0361-GRN

Ships in 10 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.

OEM INA Alternator Pulley - Overrunning Type - E82, E88, E9x, F10, F2...

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T#:42167226

Part#: EA0141

Back Ordered

$ 71.99 USD

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$ 71.99 USD

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Whether you're replacing a failing alternator pulley or performing preventive maintenance, this Alternator Pulley ensures your BMW continues to perform with factory precision and reliability.

Accessory Drive Belt Kit - E34, E83

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T#:42167237

Part#: FB0198K

Back Ordered

$ 166.99 USD

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$ 166.99 USD

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Ideal for scheduled maintenance or as a preventive repair, the Accessory Drive Belt Kit offers dependable performance and peace of mind for BMW owners looking to maintain factory-quality operation and longevity

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OEM INA Alternator Pulley - E60, E90

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T#:42167235

Part#: EA0202

Back Ordered

$ 46.99

This product was last offered at the strikethrough price on
06-19-2026

$ 33.99 USD

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$ 33.99 USD

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Whether you have a failing component or are performing preventive maintenance, this INA Alternator Pulley from Turner Motorsport is the perfect choice to keep your BMW’s electrical and accessory systems operating at peak performance.

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