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BMW Electrical Sensors, Switches, & Relays for BMW G80 M3 S58 3.0L

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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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Genuine BMW 5 Prong Salmon Relay - Multiple BMWs

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T#:5390

Part#: 12631742690

Ships in 1-2 days

8% off MSRP $ 24.99

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$ 22.99 USD

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8% off MSRP

$ 24.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 22.99 USD

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This relay is used for the SMG system on the E46 M3 and various applications including secondary air systems on other BMW's. If you find that your SMG-equipped E46 M3 is not starting, this is one of the first places to check as it controls power to the hydraulic unit (the car will not start without hydraulics). Buy one to fix the issue and buy a second so you're not stranded in the future!

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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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Genuine BMW Socket repair kit

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T#:207094

Part#: 61132359996

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$ 29.99 USD

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$ 29.99 USD

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Genuine BMW Rep. Kit For Socket Housing - 4 Pol.
This item fits the following BMW Chassis:
E46 M3,E46,E85 Z4,E90,F30,F31,F32,F33,F34,F36,F80 M3,F82 M4,F83

Hella Hella Horn - Low Tone

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T#:590880

Part#: 2768082

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$ 36.99 USD

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$ 36.99 USD

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Disc Type Low-Tone, 12 V, 335 Hz with Bracket

Hella Hella Horn - High Tone

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T#:592707

Part#: 2768551

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$ 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 Air Horn Kit

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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!

Cloth Webbed Adhesive Tape - 7.5 Meters

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T#:42873702

Part#: 61135B70D27

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$ 11.99 USD

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$ 11.99 USD

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Genuine BMW Electrical Connector Repair Kit - Multiple BMWs ...

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T#:206288

Part#: 61132359999

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$ 19.99 USD

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$ 19.99 USD

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This is a Genuine BMW 2 pin connector that is used in many places by BMW.

Oil Level Sensor

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T#:39261793

Part#: 12615A740A3

In Stock

$ 234.99 USD

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$ 234.99 USD

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Hella Relay

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T#:592718

Part#: 965400001

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$ 14.99 USD

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$ 14.99 USD

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12V 30A SPST relay with bracket

Hella Horn - Low-Tone

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T#:28869559

Part#: 7424001

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$ 17.99 USD

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$ 17.99 USD

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Universal fit. Not direct fit.

Electrical Connector - Priced Each

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2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!

T#:367145

Part#: 61132359999

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$ 18.99 USD

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$ 18.99 USD

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2 pin used in many locations on late model BMWs

Genuine BMW Terminal Socket - Mcon 2.8 - Multiple BMWs

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T#:40627

Part#: 12527567482

In Stock

Sale - Save 50% $ 1.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 0.99 USD

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$ 1.99

This product was last offered at the strikethrough price on
05-02-2026

$ 0.99 USD

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Used in a wide variety of BMW connectors, these terminal sockets can come in handy when working on your wiring components.

Repair Kit For Socket

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T#:528834

Part#: 61132359992

In Stock

7% off MSRP $ 14.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 13.99 USD

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7% off MSRP

$ 14.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 13.99 USD

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Liqui-Moly Battery Clamp Grease - 50 grams

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T#:1195997

Part#: 20244

In Stock

$ 7.79

This product was last offered at the strikethrough price on
02-24-2026

$ 6.69 USD

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$ 6.69 USD

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Excellent corrosion protection for your battery and other connections

15A Fuse - Priced Each

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2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!

T#:375327

Part#: 61131372626

In Stock at Vendor

$ 2.03 USD

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$ 2.03 USD

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Genuine BMW Universal Socket Housing

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T#:21280

Part#: 61138352304

Ships in 1 day

7% off MSRP $ 28.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 26.99 USD

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7% off MSRP

$ 28.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 26.99 USD

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Genuine BMW Universal Socket Housing, Uncoded - 3 Pol.
This item fits the following BMW Chassis:
E36 M3,E34 M5,E39 M5,E60 M5,E46 M3,E70 X5M,E71 X6M,E82 1M Coupe,E53 48IS,E34,E36,E38,E39,E46,E53 X5,E65,E70 X5,E71 X6,E82,E83 X3,E89 Z4,E90,F01,F02,F06,F10,F12,F13

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STARTER

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T#:8933493

Part#: 12418671505KT

Ships in 1 day

$ 1,036.99 USD

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$ 1,036.99 USD

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Genuine BMW Oil Level Sensor - BMW B58C/B58D B46D/B48D (TU Engines), ...

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T#:29334012

Part#: 12615A740A3

Ships in 1 day

10% off MSRP $ 358.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 323.99 USD

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10% off MSRP

$ 358.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 323.99 USD

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BMW has eliminated the dipstick in favor of electric oil level sensors located in the bottom of the oil pan. These sensors are designed to monitor both the oil level and oil condition, alerting you when the oil level is too low or the quality of the oil has dropped and should be changed. Unfortunately, like many BMW electrical components, these sensors are prone to failure and can result in improper level and quality readings. If you recently changed your oil and know the readings are incorrect, there is a good chance your sensor has failed. We recommend replacing your oil level sensor, in this case, to ensure you are always seeing proper levels and oil condition. Luckily, this sensor is easy to replace and could save you from potentially catastrophic issues later on.

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Genuine BMW Oil Level Sensor Kit - BMW B58C/B58D B46D/B48D (TU Engine...

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T#:29334055

Part#: 12615A740A3KT

Ships in 1 day

$ 329.99 USD

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$ 329.99 USD

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This kit includes a new Genuine BMW Oil Level Sensor and three hex nuts to mount the new sensor to the oil pan. If the mounting stud bolts are also damaged, you will need 3 of BMW part number 07129904544. BMW has eliminated the dipstick in favor of electric oil level sensors located in the bottom of the oil pan. These sensors are designed to monitor both the oil level and oil condition, alerting you when the oil level is too low or the quality of the oil has dropped and should be changed. Unfortunately, like many BMW electrical components, these sensors are prone to failure and can result in improper level and quality readings. If you recently changed your oil and know the readings are incorrect, there is a good chance your sensor has failed. We recommend replacing your oil level sensor, in this case, to ensure you are always seeing proper levels and oil condition. Luckily, this sensor is easy to replace and could save you from potentially catastrophic issues later on.

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Genuine BMW 10 Pole Socket Housing - Multiple BMWs

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T#:540927

Part#: 61139277742

Ships in 1 day

$ 4.99 USD

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$ 4.99 USD

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Fixing a faulty connection in your BMWs electrical system? This 10 pole socket housing is a Genuine BMW replacement.

Genuine BMW Voice Recognition SES Adapter Plug - Multiple BMWs ...

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T#:11467

Part#: 84110018038

Ships in 4 Business Days

$ 6.99 USD

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$ 6.99 USD

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Ground Cable - B48/S58

For vehicles with prod date up to 06/2025

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T#:50311456

Part#: 12425B586B0

Ships in 7 Business Days

3% off MSRP $ 60.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 58.99 USD

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3% off MSRP

$ 60.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 58.99 USD

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Your vehicle’s ground strap plays a vital role in maintaining a healthy electrical system. Exposure to heat, corrosion, and constant vibration can degrade the strap over time, resulting in weak or inconsistent electrical connections. When the ground strap begins to fail, symptoms can include hard starting, flickering or dim lights, warning messages, erratic sensor behavior, or complete no-start situations. Replacing a worn ground strap restores proper current flow, protects sensitive electronics, and keeps your engine and electrical systems operating reliably.

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Hella Horn - High-Tone

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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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