Find Parts That Fit Your Vehicle

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.

This category contains parts that fit the following chassis:

Sub-Categories

Sort By:

Bosch Remanufactured Alternator - 150amp

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!

T#:371081

Part#: 12317508054BOSKT

Back Ordered

$ 1,167.99

This product was last offered at the strikethrough price on
04-10-2026

$ 1,090.99 USD

Add to Wish List

Qty

$ 1,090.99 USD

Add to Wish List

Includes a $100.00 refundable core charge

Bosch Starter Motor - E23 E24 E28

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!

T#:224639

Part#: SR442X

Back Ordered

$ 222.99

This product was last offered at the strikethrough price on
04-15-2026

$ 160.00 USD

Add to Wish List

Qty

$ 160.00 USD

Add to Wish List

Bosch is one of the largest OEM producers of Genuine BMW and aftermarket parts in the world, providing parts for almost every major automotive manufacturer. Bosch has likely supplied many of the original electrical (and mechanical) parts for your BMW. Thanks to their exacting assembly process and high level of durability you can expect a long service life from all Bosch products.

This genuine Bosch Starter fits the following BMWs:
1988 E28 5 Series 528e M5
1988-1989 E24 6 Series M6
1984-1987 E23 7 Series 735i

Show More Show Less

OEM Bosch Remanufactured Alternator - AL9453X - F10 528i, F25 2.8i N...

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!

T#:639658

Part#: 12317591271KTKT

Back Ordered

$ 555.99 USD

Add to Wish List

Qty

$ 555.99 USD

Add to Wish List

*Price includes a refundable $65 Core Charge* If your car won't turn over, there is a good chance your starter is shot. Bosch's OEM starter is a high-quality replacement that will give you peace of mind thanks to its long life-span. Bosch is one of the largest OEM producers of Genuine BMW and aftermarket parts in the world, providing parts for almost every major automotive manufacturer. Bosch has likely supplied many of the original electrical (and mechanical) parts for your BMW. Thanks to their quality, high durability, and reliability, you should expect a long service life from Bosch products. As a leading source of high-performance BMW parts and accessories since 1993, we at Turner Motorsport are honored to be the go-to supplier for tens of thousands of enthusiasts the world over. With over two decades of parts, service, and racing experience under our belt, we provide only quality performance and replacement parts. All of our performance parts are those we would (and do!) install and run on our own cars, as well as replacement parts that are Genuine BMW or from OEM manufacturers. We only offer parts we know you can trust to perform!

Show More Show Less

Genuine BMW Engine Wiring Harness

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

T#:572317

Part#: 12517857116

Back Ordered

5% off MSRP $ 839.99

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

$ 802.00 USD

Add to Wish List

Qty

5% off MSRP

$ 839.99

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

$ 802.00 USD

Add to Wish List

Genuine BMW Engine Wiring Harness

An essential component for maintaining optimal performance and electrical reliability in your BMW vehicle. Crafted to BMW's exacting standards, this engine wiring harness ensures proper connectivity and functionality of various engine components. Its durable construction and precise engineering guarantee long-lasting durability, while its seamless integration with the engine system ensures proper function. Trust Genuine BMW parts to keep your BMW running smoothly.

Maintains optimal performance and electrical reliability
Ensures proper connectivity of engine components
Durable construction for long-lasting durability
Precise engineering for proper function
Seamless integration with engine system

Show More Show Less

Remanufactured Alternator - 105A - E36 M3 S50 Euro Only

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
For European models only

T#:378167

Part#: 12311403936KT

Back Ordered

$ 1,472.66 USD

Add to Wish List

Qty

$ 1,472.66 USD

Add to Wish List

Remanufactured Genuine BMW 105 Amp Alternator Note: This product includes a $200 core charge to be refunded once we receive your rebuildable core.

OEM Bosch Crankshaft Sensor - E70 E90 M57 3.0L

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!

T#:639133

Part#: 13627809334

Back Ordered

$ 120.99 USD

Add to Wish List

Qty

$ 120.99 USD

Add to Wish List

The crankshaft position sensor measures the speed at which the crank is turning and adjusts fueling via the ECU to match. If it fails, your computer will not know the speed and will fuel it improperly. Replace yours with a Bosch unit to get your computer reading everything properly again. Installs exactly in the place of your old sensor and will eliminate your car's idle, performance, and misfiring problems.

Project Cars

SELECT YOUR BMW

BMW Electrical Sensors, Switches, & Relays

Sub-Categories

Bosch Remanufactured Alternator - 150amp

Bosch Starter Motor - E23 E24 E28

OEM Bosch Remanufactured Alternator - AL9453X - F10 528i, F25 2.8i N...

Genuine BMW Engine Wiring Harness

Genuine BMW Engine Wiring Harness

Remanufactured Alternator - 105A - E36 M3 S50 Euro Only

OEM Bosch Crankshaft Sensor - E70 E90 M57 3.0L

Select Vehicle

Category

Brand

Price

Special Offers

Shipping

Purpose

Narrow Results