Find Parts That Fit Your Vehicle

Home
Engine Parts
Electrical System

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.

Sub-Categories

Sort By:

Burger Motorsport 4 BAR TMAP Sensor & Adapter - BMW N55/N54/S55 (2007...

T#:34885402

Part#: 4BAR TMAP

In Stock

$ 139.99 USD

Add to Wish List

Qty

$ 139.99 USD

Add to Wish List

Use these plug and play adapters to quickly adapt a 4bar TMAP sensor to your N54/N55/S55 BMW, raising the boost maximum boost range from 20psi factory up to 43psi.

BMW E6X / E8X / E9X - N52 Replacement Starter Kit

T#:15777314

Part#: SR0492NKT2-KT

In Stock

Sale - Save 8% $ 296.99

This product was last offered at the strikethrough price on
03-17-2026

$ 273.79 USD

Add to Wish List

Qty

Sale - Save 8%

$ 296.99

This product was last offered at the strikethrough price on
03-17-2026

$ 273.79 USD

Add to Wish List

Is your car having trouble starting? Does your starter click when you turn the key? Sounds like it's time for a new starter motor! Includes new starter with no core charge, intake gaskets, throttle body gasket and hardware.

Show More Show Less

Valeo Voltage Regulator - Valeo - E53, E60, E63, E64, E70

We Price Match - Give Us A Call or Chat!

T#:1196078

Part#: 12318510090

Ships in 1 Business Day

$ 91.37 USD

Add to Wish List

Qty

$ 91.37 USD

Add to Wish List

OEM replacement for you BMW alternator fixing charging issues

Voltage Regulator

We Price Match - Give Us A Call or Chat!

T#:594108

Part#: 12317603775

Ships in 1 Business Day

$ 71.22

This product was last offered at the strikethrough price on
05-04-2026

$ 70.45 USD

Add to Wish List

Qty

$ 70.45 USD

Add to Wish List

Have you noticed inconsistent electrical power in your interior lately? Your voltage regulator is responsible for maintaining a constant voltage out from the alternator.

Burger Motorsports 2013+ TypeB 4BAR Adapter - F2X F3X N54 N55 S55 ...

T#:599637

Part#: TYPEB4BARADAPTER

Back Ordered

$ 35.00 USD

Add to Wish List

Qty

$ 35.00 USD

Add to Wish List

Use these plug and play adapters to quickly adapt a 4bar TMAP sensor to your N54/N55/S55 BMW, raising the boost maximum boost range from 20psi factory up to 43psi. For very high boost applications, this 4 BAR adapter can be used which requires Bosch 4 BAR sensor (Part # 281002576). SENSOR NOT INCLUDED, Please see T#587716

Show More Show Less

Eccentric Shaft Sensor Kit

T#:15677508

Part#: 11127581215-KT

In Stock

Sale - Save 18% $ 270.16

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

$ 221.57 USD

Add to Wish List

Qty

Sale - Save 18%

$ 270.16

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

$ 221.57 USD

Add to Wish List

The eccentric shaft sensor is known to fail and can be a costly repair at the dealer. Often caused by oil getting into the connection for the wiring harness and damaging the sensor and causing a check engine light. With this kit you get the the sensor along with new valve cover and eccentric shaft adjuster gaskets to ensure a complete leak free job.

Show More Show Less

Burger Motorsports 2007-2012 TypeA 4BAR Adapter - E82/88 E9X E6X N54 ...

T#:599636

Part#: TYPEA4BARADAPTER

Ships in 2 Business Days

$ 35.00 USD

Add to Wish List

Qty

$ 35.00 USD

Add to Wish List

Use these plug and play adapters to quickly adapt a 4bar TMAP sensor to your N54/N55/S55 BMW, raising the boost maximum boost range from 20psi factory up to 43psi. For very high boost applications, this 4 BAR adapter can be used which requires Bosch 4 BAR sensor (Part # 281002576). SENSOR NOT INCLUDED, Please see T#587716

Show More Show Less

Alternator

We Price Match - Give Us A Call or Chat!

T#:594101

Part#: 12318570672

In Stock at Vendor

$ 1,094.99

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

$ 1,062.99 USD

Add to Wish List

Qty

$ 1,062.99 USD

Add to Wish List

Replacement Alternator from Valeo

Voltage Regulator

T#:596879

Part#: 12321350052

In Stock at Vendor

$ 41.99

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

$ 40.99 USD

Add to Wish List

Qty

$ 40.99 USD

Add to Wish List

If you are having issues with voltage peaking, lights fading in and out as your driving, or your battery keeps dying despite the car running, It could be the result of a faulty voltage regulator. Voltage regulators control the amount of power coming from the alternator.

Show More Show Less

Bosch Starter Motor With Hardware

T#:56110332

Part#: SR0492NKT4

In Stock

$ 261.99 USD

Add to Wish List

Qty

$ 261.99 USD

Add to Wish List

At the core is a brand-new Bosch Starter Motor, engineered to withstand extreme operating conditions while delivering immediate cranking speed. This kit includes also the required Genuine BMW Aluminum Mounting Screw Set.

Show More Show Less

AUTOTECKNIC Dry Carbon Fiber Battery Terminal Cover - G87 M2 ...

T#:21012623

Part#: ATK-BM-0420-G87

Ships in 7 Business Days

$ 495.00 USD

Add to Wish List

Qty

$ 495.00 USD

Add to Wish List

The boldly styled G87 already touts carbon features but carbon fiber is not very often displayed in the engine bay. If you are looking to give your engine bay some carbon spark, AUTOTECKNIC introduces you to their dry carbon battery terminal cover to beautify your engine bay and bring a smile to your face every time you open the hood of your S58 monster! Made from high-quality carbon, this product is sure to stand the test of time!

Show More Show Less

Morimoto Standalone Can-Bus Wiring Harness - H4 / 9003 - Priced Each ...

T#:54388428

Part#: H240

Ships on Aug 10, 2026

$ 21.99 USD

Add to Wish List

Qty

$ 21.99 USD

Add to Wish List

Remanufactured Alternator - 170A

We Price Match - Give Us A Call or Chat!

T#:594098

Part#: 12317802929

Ships on Aug 10, 2026

$ 323.99 USD

Add to Wish List

Qty

$ 323.99 USD

Add to Wish List

Replacement Alternator from Valeo

MINI N14 N18 Alternator - 120 Amp 439617

We Price Match - Give Us A Call or Chat!

T#:28803228

Part#: 12317619254

In Stock

$ 374.99 USD

Add to Wish List

Qty

$ 374.99 USD

Add to Wish List

MINI N14 N18 Alternator is an essential component for powering the electrical system of your Mini. Engineered to provide reliable performance, this alternator ensures your Mini stays running smoothly. Upgrade your Mini with this genuine alternator for dependable power generation.

Powers the electrical system
Reliable performance
Ensures smooth operation
Genuine Mini part

Show More Show Less

Alternator

We Price Match - Give Us A Call or Chat!

T#:594102

Part#: 12311247288

Back Ordered

$ 547.99

This product was last offered at the strikethrough price on
05-08-2026

$ 532.99 USD

Add to Wish List

Qty

$ 532.99 USD

Add to Wish List

Replacement Alternator from Valeo

Select Vehicle

Purpose

Category

Electrical System

Brand

View All Brands

Price

Special Offers

Shipping