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

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T#:369703

Part#: 12141709616

In Stock

$ 46.99 USD

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$ 46.99 USD

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Does not include O-ring

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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Meyle Exhaust Camshaft Position Sensor - BMW S54 S62

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T#:55497462

Part#: 3148000038

In Stock

$ 27.99

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

$ 25.99 USD

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$ 25.99 USD

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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.

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Hitachi Camshaft Position Sensor - Intake - BMW M52TU M54

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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Knock Sensor

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T#:35964551

Part#: 13627568422

Back Ordered

$ 75.99 USD

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$ 75.99 USD

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

Febi Camshaft Position Sensor

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

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T#:20155632

Part#: 12147539165

Ships on Dec 1, 2026

$ 52.99 USD

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$ 52.99 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.

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

Hitachi Camshaft Position Sensor - E39, E46, E53, E60, E63, E64, E65,...

T#:48850055

Part#: 12147518628

Ships in 3 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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Oil Pressure Switch

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T#:5944185

Part#: 12618611273

Ships on Dec 7, 2026

$ 6.99 USD

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$ 6.99 USD

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

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.

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

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T#:55281743

Part#: 13621739510

Ships on Dec 7, 2026

$ 21.99 USD

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Qty

$ 21.99 USD

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

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T#:59991931

Part#: 12147518628

Ships on Dec 7, 2026

$ 33.99 USD

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$ 33.99 USD

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Meyle S54 M3 Crankshaft Speed Sensor - 13627548994 - E46 M3

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T#:59991872

Part#: 13627548994

Ships on Dec 7, 2026

$ 41.99 USD

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$ 41.99 USD

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Hitachi Crankshaft Position Sensor - BMW M52 S52 M54

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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Meyle Outdoor Temperature Sensor / Probe

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T#:579266

Part#: 3009190001

Back Ordered

$ 44.99 USD

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Qty

$ 44.99 USD

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Common fix for incorrect OBC temperature readings

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