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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

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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

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Sale - Save 30%

$ 64.99

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

$ 45.49 USD

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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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New Alternator - 120A

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T#:25042543

Part#: 12317501690

In Stock

Sale - Save 20% $ 211.99

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

$ 169.59 USD

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Sale - Save 20%

$ 211.99

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

$ 169.59 USD

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

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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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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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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

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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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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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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 ...

Includes o-ring.

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T#:591868

Part#: 12147539165

In Stock

$ 31.99 USD

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$ 31.99 USD

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Alternator - 120amp

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T#:25042542

Part#: 12317831436

In Stock

Sale - Save 25% $ 222.99

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

$ 167.24 USD

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Sale - Save 25%

$ 222.99

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

$ 167.24 USD

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Exhaust Camshaft Sensor - E46 E39 E38 E60 E63 E65 X3 X5 Z3 Z4 ...

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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

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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

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

T#:54388428

Part#: H240

Ships on Dec 1, 2026

$ 21.99 USD

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$ 21.99 USD

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Febi Camshaft Position Sensor

We Price Match - Give Us A Call or Chat!

T#:368897

Part#: 12147518628

Ships in 2 Business Days

$ 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 ...

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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

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T#:16375128

Part#: 61368373700

Ships on Feb 11, 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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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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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

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T#:382731

Part#: 65816936953

Ships in 2 Business Days

$ 20.79

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

$ 19.99 USD

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$ 19.99 USD

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Common fix for incorrect OBC temperature readings

Battery Tender Plus Advanced Battery Charging System

T#:49892371

Part#: BTT0210128

In Stock at Vendor

9% off MSRP $ 64.99

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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9% off MSRP

$ 64.99

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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Starter Motor

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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

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

T#:56544002

Part#: 12317501690

Special Order: No Guaranteed ETA

$ 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, E3...

T#:56507847

Part#: 12141709616

Special Order: No Guaranteed ETA

$ 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

T#:56724716

Part#: 12412354693

Special Order: No Guaranteed ETA

$ 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 ...

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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
11-07-2026

$ 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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