Home
Engine Parts
Electrical System

BMW Electrical Sensors, Switches, & Relays for BMW 3 Series E46 (1999-2005)

Clear BMW chassis

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:

Oil Level Sensor - E46 E39 E60 E38 X3 X5 Z3 Z4 Z8

10X Entries Into Our F80 M3 Sweepstakes 10X Entries For Our Spin To Win Sweepstakes!

T#:395203

Part#: 12617508003

In Stock

Sale - Save 30% $ 64.99

This product was last offered at the strikethrough price on
11-07-2026

$ 45.49 USD

Add to Wish List

Qty

Sale - Save 30%

$ 64.99

This product was last offered at the strikethrough price on
11-07-2026

$ 45.49 USD

Add to Wish List

This is the oil level sensor / sender for BMW E46 E39 E60 E38 X3 X5 Z3 Z4 Z8.When this part fails it will illuminate a check light on the dash which indicates it needs to be replaced. Includes o-ring. This item fits the following BMWs: 1999-2005 E46 BMW 323i 323ci 325i 325ci 325xi 328i 328ci 330i 330xi M3 2008+ E90 BMW 335d 1999-2003 E39 BMW 528i 525i 530i M5 1998-2003 E39 BMW 540i 2004-2005 E60 BMW 525i 530i 1998-2001 E38 BMW 740i 740il 750il 2004-2006 E85 BMW X3 2.5i X3 3.0i 2000-2006 E53 BMW X5 3.0i 2000-2003 E53 BMW X5 4.4i X5 4.6is 1999-2002 Z3 BMW Z3 2.3 Z3 2.5i Z3 2.8 Z3 3.0i 2001-2002 Z3 BMW Z3 M Roadster Z3 M Coupe 2003-2006 Z4 BMW Z4 2.5i Z4 3.0i 2000-2003 E52 BMW Z8

Show More Show Less

Bremmen Crankshaft Position Sensor - E36 E46 E39 E60 X3 X5 Z3 Z4 ...

10X Entries Into Our F80 M3 Sweepstakes 10X Entries For Our Spin To Win Sweepstakes!

T#:640146

Part#: 12141709616

Ships on Jan 11, 2027

Sale - Save 30% $ 40.99

This product was last offered at the strikethrough price on
11-07-2026

$ 28.69 USD

Add to Wish List

Qty

Sale - Save 30%

$ 40.99

This product was last offered at the strikethrough price on
11-07-2026

$ 28.69 USD

Add to Wish List

This is the crank shaft position sensor. It provides information for the ECU. A faulty sensor can cause issues with timing adjustment and limit performance and vehicle operation. Replace your sensor with a high-quality Bremmen sensor to restore peak performance.

Show More Show Less

Meyle Crankshaft Position Sensor - E36, E39, E46, E53, E60, E83, Z3, ...

5X Entries Into Our F80 M3 Sweepstakes 2X Entries For Our Spin To Win Sweepstakes!
We Price Match - Give Us A Call or Chat!

T#:369703

Part#: 12141709616

In Stock

$ 46.99 USD

Add to Wish List

Qty

$ 46.99 USD

Add to Wish List

Does not include O-ring

Camshaft Position Sensor - E46 M3, Z4M, Z3M S54

10X Entries Into Our F80 M3 Sweepstakes 10X Entries For Our Spin To Win Sweepstakes!

T#:36913379

Part#: 12147539171

In Stock

Sale - Save 30% $ 91.99

This product was last offered at the strikethrough price on
11-07-2026

$ 64.39 USD

Add to Wish List

Qty

Sale - Save 30%

$ 91.99

This product was last offered at the strikethrough price on
11-07-2026

$ 64.39 USD

Add to Wish List

The camshaft position sensor is essential for assisting the engine DME by monitoring the camshaft's position. The data from this sensor is key to optimizing ignition timing and ensuring smooth engine performance.

Often referred to as the CMP sensor, this component is crucial for the overall functionality of the powertrain. A failing camshaft position sensor can cause a range of issues, including engine stumbling, hesitation during acceleration, power loss, and even starting difficulties or complete failure to start.

Show More Show Less

Febi Camshaft Position Sensor - Intake - E39 E46 E53 E60 E83 Z3 Z4 ...

Includes o-ring.

We Price Match - Give Us A Call or Chat!

T#:591868

Part#: 12147539165

In Stock

$ 31.99 USD

Add to Wish List

Qty

$ 31.99 USD

Add to Wish List

Bremmen Camshaft Position Sensor - E46 E39 E60 E83 Z3 Z4

10X Entries Into Our F80 M3 Sweepstakes 10X Entries For Our Spin To Win Sweepstakes!

T#:640145

Part#: 12147518628

Ships on Dec 16, 2026

Sale - Save 20% $ 32.99

This product was last offered at the strikethrough price on
11-07-2026

$ 26.39 USD

Add to Wish List

Qty

Sale - Save 20%

$ 32.99

This product was last offered at the strikethrough price on
11-07-2026

$ 26.39 USD

Add to Wish List

A bad cam sensor can cause a variety of problems from hard starting to stalling at low speeds. Cam sensor replacement has been known to cure many drivability issues

Meyle Exhaust Camshaft Position Sensor - BMW S54 S62

5X Entries Into Our F80 M3 Sweepstakes 2X Entries For Our Spin To Win Sweepstakes!

T#:55497462

Part#: 3148000038

In Stock

$ 27.99

This product was last offered at the strikethrough price on
09-14-2026

$ 25.99 USD

Add to Wish List

Qty

$ 25.99 USD

Add to Wish List

Don't let a failing camshaft position sensor rob your vehicle of power or cut your track day short. This Meyle replacement camshaft sensor is built to deliver fast, highly accurate data to the ECU, preventing the performance drops, sluggish throttle response, and rough idling caused by worn-out factory electronics. Engineered to withstand high underhood heat and intense vibrations, it keeps your ignition timing and fuel delivery tightly synced, whether you are daily driving or pushing through high-RPM pulls.

Show More Show Less

Knock Sensor

5X Entries Into Our F80 M3 Sweepstakes 2X Entries For Our Spin To Win Sweepstakes!
We Price Match - Give Us A Call or Chat!

T#:35964551

Part#: 13627568422

Back Ordered

$ 75.99 USD

Add to Wish List

Qty

$ 75.99 USD

Add to Wish List

This sensor detects engine knocking or pinging and adjusts the timing to ensure optimal engine performance and efficiency.

Febi Camshaft Position Sensor

We Price Match - Give Us A Call or Chat!

T#:368897

Part#: 12147518628

Ships in 1 Business Day

$ 48.99

This product was last offered at the strikethrough price on
09-01-2026

$ 40.99 USD

Add to Wish List

Qty

$ 40.99 USD

Add to Wish List

A faulty cam sensor can lead to issues like difficulty starting and stalling at low speeds. Replacing the cam sensor often resolves many drivability problems. Requires O-ring #12141748398 (not included).

Show More Show Less

Meyle M52 M54 Camshaft Position Sensor - 12147539165 - E46, E39, E60,...

5X Entries Into Our F80 M3 Sweepstakes 2X Entries For Our Spin To Win Sweepstakes!
We Price Match - Give Us A Call or Chat!

T#:20155632

Part#: 12147539165

Ships on Dec 1, 2026

$ 52.99 USD

Add to Wish List

Qty

$ 52.99 USD

Add to Wish List

A bad cam sensor can cause a variety of problems from hard starting to stalling at low speeds. Cam sensor replacement has been known to cure many drivabilty issues.

Oil Pressure Switch (fits most BMWs)

2X Entries Into Our F80 M3 Sweepstakes

T#:363

Part#: 12617568480

In Stock

$ 7.99

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

$ 5.39 USD

Add to Wish List

Qty

$ 5.39 USD

Add to Wish List

Having your oil pressure light come on can mean very serious problems. Or it could just be this switch that fails several times over a car's lifespan. By no means should you ignore the warning light but replacing this sensor could be the actual culprit. The other problem with this switch is that oil can leak past its seal. With the oil under a lot of pressure at this point, the oil loss can be a serious concern. It's a simple replacement when doing most oil change work.

This Oil Pressure Switch fits the following BMWs:
1985-1991 E30 318i, 318is, 325e, 325i, M3
1992-1999 E36 318i/is, 325i/is, 328i/is, 323is, M3
1992-1997 E31 840i, 850i
1988-1994 E32 735i, 735iL, 740i, 740iL
1989-1995 E34 525i, 530i, 535i, 540i, M5
1995-2001 E38 740i, 740iL, 750i, 750iL
1996-2002 Z3 Roadster/Coupe 1.9, 2.3, 2.5, 2.8, 3.0, 3.2
1997-2003 E39 525i, 528i, 530i, 540i, M5
1999-2005 E46 323, 325, 328, 330, M3
2000-2003 Z8 roadster
2001-2006 E53 X5 X5 3.0i, X5 4.4i, X5 4.6is, X5 4.8is
2002+ E65/E66 745i, 745li, 750i, 750li, 760i, B7 Alpina
2003+ Z4 Roadster/Coupe Z4 2.5, 3.0, 3.0si
2004+ E60 525i, 530i, 535i, 545i, 550i, M5
2005+ E63/E64 645Ci, 650i, M6
2005+ E83 X3 X3 2.5, X3 3.0
2006+ E90/E92 325, 328, 330, 335
2007+ E70 X5 X5 3.0i, X5 4.8i

Show More Show Less

Bremmen Parts Outdoor Temperature Sensor / Probe - 65816936953 ...

10X Entries Into Our F80 M3 Sweepstakes 10X Entries For Our Spin To Win Sweepstakes!

T#:30728992

Part#: 65816936953

In Stock

Sale - Save 30% $ 13.99

This product was last offered at the strikethrough price on
11-07-2026

$ 9.79 USD

Add to Wish List

Qty

Sale - Save 30%

$ 13.99

This product was last offered at the strikethrough price on
11-07-2026

$ 9.79 USD

Add to Wish List

Febi Relay - Replaces White/Green

We Price Match - Give Us A Call or Chat!

T#:16375128

Part#: 61368373700

Ships on Feb 10, 2027

Sale - Save 28% $ 15.99

This product was last offered at the strikethrough price on
05-15-2026

$ 11.56 USD

Add to Wish List

Qty

Sale - Save 28%

$ 15.99

This product was last offered at the strikethrough price on
05-15-2026

$ 11.56 USD

Add to Wish List

This relay is often the fuel pump relay for many BMW models. To ensure the relay is correct for your car please check the pin locations

Febi Outdoor Temperature Sensor / Probe

We Price Match - Give Us A Call or Chat!

T#:382731

Part#: 65816936953

Ships in 1 Business Day

$ 20.79

This product was last offered at the strikethrough price on
10-21-2026

$ 19.99 USD

Add to Wish List

Qty

$ 19.99 USD

Add to Wish List

Common fix for incorrect OBC temperature readings

SEG Automotive Alternator - SEG Automotive 0124.525.588 - 12317541694...

T#:54851984

Part#: 12317541694

Ships in 1 Business Day

$ 521.99

This product was last offered at the strikethrough price on
07-16-2026

$ 470.99 USD

Add to Wish List

Qty

$ 470.99 USD

Add to Wish List

SEG Automotive Alternator - SEG Automotive 0124.515.223 - 12317519618...

T#:54851980

Part#: 12317519618

Ships on Dec 7, 2026

$ 503.99

This product was last offered at the strikethrough price on
07-16-2026

$ 500.99 USD

Add to Wish List

Qty

$ 500.99 USD

Add to Wish List

Oil Pressure Switch

5X Entries Into Our F80 M3 Sweepstakes 2X Entries For Our Spin To Win Sweepstakes!
We Price Match - Give Us A Call or Chat!

T#:5944185

Part#: 12618611273

Ships on Dec 4, 2026

$ 6.99 USD

Add to Wish List

Qty

$ 6.99 USD

Add to Wish List

This Meyle Oil Pressure Switch is the ideal service replacement to keep your BMW or European powerhouse performing reliably on the street or track.

SEG Automotive New 150A Alternator - 0124.525.561 - E21, E30, E36, E4...

T#:58965212

Part#: 0124.525.561

Ships on Dec 7, 2026

$ 487.99 USD

Add to Wish List

Qty

$ 487.99 USD

Add to Wish List

SEG Automotive, the company behind Bosch's starter motor and generator business, builds this brand-new 150-amp alternator with a freewheel pulley that smooths out belt loads for a quieter, longer-lasting accessory drive.

Show More Show Less

SEG Automotive New 120A Alternator - 0124.515.052 - E46, E39 525i 530...

T#:58965210

Part#: 0124.515.052

Ships on Dec 7, 2026

$ 485.99 USD

Add to Wish List

Qty

$ 485.99 USD

Add to Wish List

A strong charging system keeps everything from your ignition to your stereo working at its best, and a failing alternator can undermine all of it.

SEG Automotive New Alternator - 0124.525.523 - E46 325i 325Ci 330Ci, ...

T#:58965213

Part#: 0124.525.523

Ships on Dec 7, 2026

$ 495.99 USD

Add to Wish List

Qty

$ 495.99 USD

Add to Wish List

Your BMW's charging system powers everything from ignition to infotainment, so a weak alternator affects the whole car.

Starter Motor

10X Entries Into Our F80 M3 Sweepstakes 10X Entries For Our Spin To Win Sweepstakes!

T#:55030826

Part#: 12412354693

Ships on Dec 15, 2026

Sale - Save 10% $ 129.99

This product was last offered at the strikethrough price on
11-07-2026

$ 116.99 USD

Add to Wish List

Qty

Sale - Save 10%

$ 129.99

This product was last offered at the strikethrough price on
11-07-2026

$ 116.99 USD

Add to Wish List

Febi Alternator - 12317501690 - E46, E39 525i 528i 530i, E53 X5 ...

T#:56544002

Part#: 12317501690

Special Order: No Guaranteed ETA

$ 245.99 USD

Add to Wish List

Qty

$ 245.99 USD

Add to Wish List

Trust Febi Bilstein for clean power output and dependable performance every time you start your engine.

Febi Crankshaft Sensor With Sealing Ring - 12141709616 - E36, E46, E3...

T#:56507847

Part#: 12141709616

Special Order: No Guaranteed ETA

$ 14.99 USD

Add to Wish List

Qty

$ 14.99 USD

Add to Wish List

Keep your BMW’s engine management system operating at peak performance with this replacement crankshaft position sensor from Febi Bilstein.

Febi M54 Starter Motor - 12412354693 - E46, E39, E60, E83

T#:56724716

Part#: 12412354693

Special Order: No Guaranteed ETA

$ 147.99 USD

Add to Wish List

Qty

$ 147.99 USD

Add to Wish List

This Febi Bilstein starter motor delivers the cranking performance your BMW needs for instant ignition response every time you turn the key.

Meyle Air Temperature Sensor - 13621739510 - E36, E46, E39, E38, E83,...

5X Entries Into Our F80 M3 Sweepstakes 2X Entries For Our Spin To Win Sweepstakes!

T#:55281743

Part#: 13621739510

Ships on Dec 4, 2026

$ 21.99 USD

Add to Wish List

Qty

$ 21.99 USD

Add to Wish List

Meyle Camshaft Position Sensor - 12147518628 - 3, 5, 6, 7 Series, X3,...

5X Entries Into Our F80 M3 Sweepstakes 2X Entries For Our Spin To Win Sweepstakes!

T#:59991931

Part#: 12147518628

Ships on Dec 4, 2026

$ 33.99 USD

Add to Wish List

Qty

$ 33.99 USD

Add to Wish List

Meyle S54 M3 Crankshaft Speed Sensor - 13627548994 - E46 M3

5X Entries Into Our F80 M3 Sweepstakes 2X Entries For Our Spin To Win Sweepstakes!

T#:59991872

Part#: 13627548994

Ships on Dec 4, 2026

$ 41.99 USD

Add to Wish List

Qty

$ 41.99 USD

Add to Wish List

Meyle Outdoor Temperature Sensor / Probe

5X Entries Into Our F80 M3 Sweepstakes 2X Entries For Our Spin To Win Sweepstakes!
We Price Match - Give Us A Call or Chat!

T#:579266

Part#: 3009190001

Back Ordered

$ 44.99 USD

Add to Wish List

Qty

$ 44.99 USD

Add to Wish List

Common fix for incorrect OBC temperature readings

Select Vehicle

Purpose

Category

Electrical System

Brand

View All Brands

Price

Special Offers