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

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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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Oil Level Sensor - E46 E39 E60 E38 X3 X5 Z3 Z4 Z8
Oil Level Sensor - E46 E39 E60 E38 X3 X5 Z3 Z4 Z8
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Bremmen Parts - Corporate Logo
T#:395203
Part#: 12617508003
In Stock
Sale - Save 30% $ 64.99

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11-07-2026

$ 45.49 USD
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$ 64.99

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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
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Bremmen Crankshaft Position Sensor - E36 E46 E39 E60 X3 X5 Z3 Z4
Bremmen Crankshaft Position Sensor - E36 E46 E39 E60 X3 X5 Z3 Z4 ...
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Bremmen Parts - Corporate Logo
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
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$ 40.99

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

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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.
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Camshaft Position Sensor - E46 M3, Z4M, Z3M S54
Camshaft Position Sensor - E46 M3, Z4M, Z3M S54
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Bremmen Parts - Corporate Logo
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
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$ 91.99

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

$ 64.39 USD
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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.

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Febi Camshaft Position Sensor - Intake - E39 E46 E53 E60 E83 Z3 Z4
Febi Camshaft Position Sensor - Intake - E39 E46 E53 E60 E83 Z3 Z4 ...
Includes o-ring.
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Febi - Corporate Logo
T#:591868
Part#: 12147539165
In Stock
$ 31.99 USD
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$ 31.99 USD
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Exhaust Camshaft Sensor - E46 E39 E38 E60 E63 E65 X3 X5 Z3 Z4
Exhaust Camshaft Sensor - E46 E39 E38 E60 E63 E65 X3 X5 Z3 Z4 ...
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Packaged by Turner - Corporate Logo
T#:338260
Part#: 12147518628HK
In Stock
Starting at $ 79.98 USD
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Starting at $ 79.98 USD
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This is the exhaust cam position sensor for cars with M52, M54, N62 engines. Choose either Genuine BMW or Hella brand. Hella manufactures the highest quality parts and is an OEM supplier to BMW. Includes BMW part numbers 12147518628 and 12141748398. Replaces BMW part number 12141438082.

This item fits the following BMWs:
1999-2005 E46 BMW 323i 323ci 325i 325ci 325xi 328i 328ci 330i 330ci 330xi
1999-2003 E39 BMW 525i 528i 530i
2004-2005 E60 BMW 525i 530i 545i
2004-2005 E63 BMW 645ci
2002-2005 E65 BMW 745i 745li
2004-2006 E83 BMW X3 2.5i X3 3.0i
2000-2006 E53 BMW X5 3.0i
2004-2006 E53 BMW X5 4.4i 4.8i
1999-2002 Z3 BMW Z3 2.3 Z3 2.5i Z3 2.8 Z3 3.0i
2003-2006 E85 BMW Z4 2.5i Z4 3.0i
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Bremmen Camshaft Position Sensor - E46 E39 E60 E83 Z3 Z4
Bremmen Camshaft Position Sensor - E46 E39 E60 E83 Z3 Z4
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Bremmen Parts - Corporate Logo
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
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Sale - Save 20%
$ 32.99

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

$ 26.39 USD
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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
Hitachi Camshaft Position Sensor - Intake - BMW M52TU M54
Hitachi Camshaft Position Sensor - Intake - BMW M52TU M54
Hitachi - Corporate Logo
T#:48850072
Part#: 12147539165
In Stock
$ 41.99 USD
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$ 41.99 USD
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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. Uses O-ring # 12 141 748 398 (not included)
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Febi Camshaft Position Sensor
Febi Camshaft Position Sensor
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Febi - Corporate Logo
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
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$ 40.99 USD
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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).
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Bremmen Parts Outdoor Temperature Sensor / Probe - 65816936953
Bremmen Parts Outdoor Temperature Sensor / Probe - 65816936953 ...
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Bremmen Parts - Corporate Logo
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
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$ 13.99

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

$ 9.79 USD
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Febi Relay - Replaces White/Green
Febi Relay - Replaces White/Green
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Febi - Corporate Logo
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
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$ 15.99

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

$ 11.56 USD
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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
Febi Outdoor Temperature Sensor / Probe
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Febi - Corporate Logo
T#:382731
Part#: 65816936953
Ships in 1 Business Day
$ 20.79

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

$ 20.00 USD
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$ 20.00 USD
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Common fix for incorrect OBC temperature readings
Hitachi Camshaft Position Sensor - E39, E46, E53, E60, E63, E64, E65, E66, E83, Z3, Z4
Hitachi Camshaft Position Sensor - E39, E46, E53, E60, E63, E64, E65,...
Hitachi - Corporate Logo
T#:48850055
Part#: 12147518628
Ships in 2 Business Days
$ 71.99 USD
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$ 71.99 USD
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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.
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Starter Motor
Starter Motor
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Bremmen Parts - Corporate Logo
T#:55030826
Part#: 12412354693
Ships on Dec 15, 2026
New Item
Sale - Save 10% $ 129.99

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

$ 116.99 USD
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$ 129.99

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

$ 116.99 USD
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Febi Alternator - 12317501690 - E46, E39 525i 528i 530i, E53 X5
Febi Alternator - 12317501690 - E46, E39 525i 528i 530i, E53 X5 ...
Febi - Corporate Logo
T#:56544002
Part#: 12317501690
Special Order: No Guaranteed ETA
New Item
$ 245.99 USD
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$ 245.99 USD
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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, E39, E60, E83, E53
Febi Crankshaft Sensor With Sealing Ring - 12141709616 - E36, E46, E3...
Febi - Corporate Logo
T#:56507847
Part#: 12141709616
Special Order: No Guaranteed ETA
New Item
$ 14.99 USD
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$ 14.99 USD
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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
Febi M54 Starter Motor - 12412354693 - E46, E39, E60, E83
Febi - Corporate Logo
T#:56724716
Part#: 12412354693
Special Order: No Guaranteed ETA
New Item
$ 147.99 USD
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$ 147.99 USD
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This Febi Bilstein starter motor delivers the cranking performance your BMW needs for instant ignition response every time you turn the key.
Oil Temperature Sensor And Gauge Kit - Blue & Red - Multiple BMWs
Oil Temperature Sensor And Gauge Kit - Blue & Red - Multiple BMWs ...
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Packaged by Turner - Corporate Logo
T#:401689
Part#: OILTEMPGAUGEBRKK
Back Ordered
Sale - Save 3% $ 199.99

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

$ 193.26 USD
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Sale - Save 3%
$ 199.99

This product was last offered at the strikethrough price on
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$ 193.26 USD
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The EVO series from ProSport Gauges is an award winning, industry leading option for those looking to push their car's limits. They allowing you to monitor crucial engine functions in one quick glance with advanced precision. Featuring a dual color readout, you can customize your readout to your liking. Offering a user friendly readout with a digital reading in the center with a bar-graph style sweep around the gauge as well.
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Hitachi Crankshaft Position Sensor - BMW M52 S52 M54
Hitachi Crankshaft Position Sensor - BMW M52 S52 M54
Hitachi - Corporate Logo
T#:48815470
Part#: 12141709616
Back Ordered
$ 32.99 USD
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$ 32.99 USD
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NOTE: Does not include o-ring seal - see BMW # 12141748398 This is the crankshaft 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 Hitachi sensor to restore peak performance.
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