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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.

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Meyle Crankshaft Position Sensor - E36, E39, E46, E53, E60, E83, Z3, Z4
Meyle Crankshaft Position Sensor - E36, E39, E46, E53, E60, E83, Z3, ...
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Meyle - Corporate Logo
T#:369703
Part#: 12141709616
Ships on Sep 29, 2026
$ 46.99 USD
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$ 46.99 USD
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Does not include O-ring
Camshaft Position Sensor
Camshaft Position Sensor
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T#:591413
Part#: 12141742185
In Stock at Vendor
$ 108.99

This product was last offered at the strikethrough price on
05-07-2026

$ 104.99 USD
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When this sensor fails, it will become impossible to start your car, leaving you stranded.
Hitachi Voltage Regulator - BMW E31 E32 E34 E36
Hitachi Voltage Regulator - BMW E31 E32 E34 E36
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T#:48850064
Part#: 12311747920
Ships in 7 Business Days
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$ 37.99 USD
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$ 37.99 USD
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This voltage regulator is a crucial component that controls the alternator's output, preventing overcharging by adjusting the current to maintain a safe range of vehicle voltage, thereby protecting the battery and electrical system. Symptoms of failure include dim lights, battery warnings, or a dead battery, often requiring replacement, which can be internal or external to the alternator.
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Alternator Pulley - E82 E90 E92 E60
Alternator Pulley - E82 E90 E92 E60
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T#:19332
Part#: 12317570152
Ships in 1-2 days
$ 66.99 USD
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$ 66.99 USD
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This OEM alternator pulley has a ratcheting mechanism inside that can wear out, causing a rattling sound. This mechanism allows the alternator to freewheel to a degree. This is only for the Valeo brand alternator/

This item fits the following BMWs:
2008+ E82 BMW 128i with N51 engine
2006-2007 E90 BMW 325i 325xi 330i 330xi - Sedan
2006-2007 E90 BMW 328i 328xi - Sedan with N51 engine
2006-2007 E91 BMW 325xi - Wagon
2007-2007 E92 BMW 328i 328xi 328i xDrive - Coupe with N51 engine
2006-2007 E60 BMW 525i 525xi 530i 530xi
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Knock Sensor
Knock Sensor
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Meyle - Corporate Logo
T#:35964551
Part#: 13627568422
In Stock
$ 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.
Meyle Crankshaft Position Sensor - M60
Meyle Crankshaft Position Sensor - M60
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T#:5958675
Part#: 12141731887
Ships on Nov 9, 2026
$ 59.99 USD
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$ 59.99 USD
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Wulf Gaertner Autoparts AG manufactures and markets automotive spare parts under its MEYLE brand. Since its foundation in 1958, Wulf Gaertner Autoparts has been an owner-operated, unlisted family business on the aftermarket scene. Since 1995, Wulf Gaertner Autoparts AG has been manufacturing and trading under its MEYLE brand. They pride themselves on top-grade quality-tested spare parts for passenger cars, vans and commercial vehicles. 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. Installs exactly in the place of your old sensor and will eliminate your car's idle, performance, and misfiring problems.
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Hitachi Engine Crankshaft Position Sensor - BMW N52 N54 S85 S65 S63
Hitachi Engine Crankshaft Position Sensor - BMW N52 N54 S85 S65 S63 ...
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Hitachi - Corporate Logo
T#:48815471
Part#: 13627525015
Ships in 7 Business Days
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$ 66.99 USD
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$ 66.99 USD
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The crankshaft position sensor transmits the crankshaft's position to the computer. This helps the computer to calculate proper spark and fuel control. If you're struggling with CELs, hard starts or no starts, stalling, and/or a rough idle, you may need to replace the crank position sensor.
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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,...
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Hitachi - Corporate Logo
T#:48850055
Part#: 12147518628
Ships in 3 Business Days
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$ 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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Hitachi Camshaft Position Sensor - BMW E9X F3X F8X N20 N52 N55 S55
Hitachi Camshaft Position Sensor - BMW E9X F3X F8X N20 N52 N55 S55 ...
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Hitachi - Corporate Logo
T#:48815454
Part#: 13627525014
Ships in 7 Business Days
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$ 40.00 USD
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$ 40.00 USD
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The camshaft position sensor communicates the position of the camshaft to the computer. This helps the computer to calculate proper spark and fuel control. If you're struggling with CELs, hard starts or no starts, stalling, and/or a rough idle, you may need to replace the cam position sensor.
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Hitachi Crankshaft Sensor - BMW B46 B48 B58
Hitachi Crankshaft Sensor - BMW B46 B48 B58
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T#:48850081
Part#: 13627806782
Ships in 7 Business Days
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$ 81.99 USD
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$ 81.99 USD
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Tells the computer whether the timing is correct in the engine.
Hitachi Engine Camshaft Position Sensor - BMW S63M N63B/N63M/N63R S68X/S68T
Hitachi Engine Camshaft Position Sensor - BMW S63M N63B/N63M/N63R S68...
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Hitachi - Corporate Logo
T#:48850059
Part#: 13628697982
Ships in 7 Business Days
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$ 48.99 USD
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$ 48.99 USD
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The camshaft position sensor communicates the position of the camshaft to the computer. This helps the computer to calculate proper spark and fuel control. If you're struggling with CELs, hard starts or no starts, stalling, and/or a rough idle, you may need to replace the cam position sensor.
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Hitachi Camshaft Position Sensor - Intake - BMW M52TU M54
Hitachi Camshaft Position Sensor - Intake - BMW M52TU M54
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Hitachi - Corporate Logo
T#:48850072
Part#: 12147539165
In Stock at Vendor
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$ 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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Hitachi Engine Crankshaft Position Sensor - BMW F2X F3X
Hitachi Engine Crankshaft Position Sensor - BMW F2X F3X
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Hitachi - Corporate Logo
T#:48850074
Part#: 13627582842
Ships in 7 Business Days
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$ 184.99 USD
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$ 184.99 USD
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Engine cranks but doesn't start? This sensor is often the issue.
Hitachi Voltage Regulator - BMW E88 N52
Hitachi Voltage Regulator - BMW E88 N52
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Hitachi - Corporate Logo
T#:48815477
Part#: 12317550469
Ships in 7 Business Days
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$ 79.99 USD
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$ 79.99 USD
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Supplies power to your car's electronics and recharges the battery.
Knock Sensor
Knock Sensor
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Meyle - Corporate Logo
T#:55353615
Part#: 12141716055
Special Order: No Guaranteed ETA
New Item
$ 28.99 USD
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$ 28.99 USD
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This Meyle replacement knock sensor is the perfect solution for keeping your high-performance engine safe and running at its absolute peak.
Crankshaft Pulse Sensor
Crankshaft Pulse Sensor
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Meyle - Corporate Logo
T#:55030835
Part#: 3148100018
Ships on Oct 30, 2026
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$ 15.99 USD
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$ 15.99 USD
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Keep your ultimate driving machine running the way it was engineered to with this reliable replacement.
Crankshaft Position Sensor
Crankshaft Position Sensor
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Meyle - Corporate Logo
T#:55030834
Part#: 3148100013
Ships on Oct 30, 2026
New Item
$ 36.99 USD
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$ 36.99 USD
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This Meyle Crankshaft Position Sensor is the perfect solution for restoring the critical engine speed data your ECU relies on.
Meyle Crankshaft Position Sensor - E31, E38, E39, E52, E60, E63, E64, E90, E92, E93
Meyle Crankshaft Position Sensor - E31, E38, E39, E52, E60, E63, E64,...
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Meyle - Corporate Logo
T#:579358
Part#: 3148990000
Special Order: No Guaranteed ETA
$ 37.99 USD
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$ 37.99 USD
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Referred to as the speed sensor & reference sensor
Temperature Sensor
Temperature Sensor
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Meyle - Corporate Logo
T#:637028
Part#: 12621710511
Ships on Nov 9, 2026
$ 15.99 USD
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$ 15.99 USD
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Meyle Camshaft Position Sensor - E38 E39 E53 M62 (09/1998 and up)
Meyle Camshaft Position Sensor - E38 E39 E53 M62 (09/1998 and up) ...
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Meyle - Corporate Logo
T#:35829319
Part#: 12147539166
Special Order: No Guaranteed ETA
$ 32.99 USD
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$ 32.99 USD
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When this sensor fails, it will become impossible to start your car, leaving you stranded.
Camshaft Sensor
Camshaft Sensor
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Meyle - Corporate Logo
T#:36540587
Part#: 12141485845
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$ 32.99 USD
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$ 32.99 USD
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Coolant Temperature Sensor
Coolant Temperature Sensor
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Meyle - Corporate Logo
T#:5886984
Part#: 13627823993
Special Order: No Guaranteed ETA
$ 34.99 USD
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$ 34.99 USD
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Part of the EGR cooling system. Located in the coolant line near the aux water pump.
Meyle Crankshaft Pulse Sensor - BMW EXX, FXX
Meyle Crankshaft Pulse Sensor - BMW EXX, FXX
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Meyle - Corporate Logo
T#:52762518
Part#: 314810014
Special Order: No Guaranteed ETA
New Item
$ 19.99 USD
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$ 19.99 USD
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Revitalize your vehicle’s performance and reliability with the MEYLE Crankshaft Pulse Sensor.
MEYLE Crank Position Sensor - BMW E46, E90
MEYLE Crank Position Sensor - BMW E46, E90
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Meyle - Corporate Logo
T#:52621846
Part#: MPS0126
Special Order: No Guaranteed ETA
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$ 29.99 USD
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$ 29.99 USD
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The Meyle MPS0126 Crankshaft Position Sensor is a robust replacement for aging or failing factory sensors that often trigger P0335 or P0339 trouble codes.
Coolant Temperature Sensor
Coolant Temperature Sensor
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Meyle - Corporate Logo
T#:5958757
Part#: 12621747281
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$ 12.99 USD
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$ 12.99 USD
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MEYLE-ORIGINAL: True to OE coolant temperature sensor. Wulf Gaertner Autoparts AG manufactures and markets automotive spare parts under its MEYLE brand. Since its foundation in 1958, Wulf Gaertner Autoparts has been an owner-operated, unlisted family business on the aftermarket scene. Since 1995, Wulf Gaertner Autoparts AG has been manufacturing and trading under its MEYLE brand. They pride themselves on top-grade quality-tested spare parts for passenger cars, vans and commercial vehicles. Comparable OE Cross Reference - 12621747281 12621710535
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Meyle Camshaft Position Sensor - BMW i3
Meyle Camshaft Position Sensor - BMW i3
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Meyle - Corporate Logo
T#:52762526
Part#: 3148100005
Special Order: No Guaranteed ETA
New Item
$ 30.99 USD
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$ 30.99 USD
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The MEYLE Camshaft Position Sensor restores the "timing" of your engine, ensuring your fuel is injected at the perfect millisecond.
Oil Pressure Switch
Oil Pressure Switch
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Meyle - Corporate Logo
T#:5944185
Part#: 12618611273
Special Order: No Guaranteed ETA
$ 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.
Hitachi Crankshaft Position Sensor - BMW M52 S52 M54
Hitachi Crankshaft Position Sensor - BMW M52 S52 M54
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Hitachi - Corporate Logo
T#:48815470
Part#: 12141709616
Back Ordered
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$ 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
Meyle Outdoor Temperature Sensor / Probe
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Meyle - Corporate Logo
T#:579266
Part#: 3009190001
Special Order: No Guaranteed ETA
$ 44.99 USD
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$ 44.99 USD
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Common fix for incorrect OBC temperature readings
Hitachi Crankshaft Position Sensor - BMW N20 N26 2.0L
Hitachi Crankshaft Position Sensor - BMW N20 N26 2.0L
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T#:48815475
Part#: 13627595860
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$ 68.99 USD
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$ 68.99 USD
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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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Accessory Drive Belt Kit - E34, E83
Accessory Drive Belt Kit - E34, E83
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Ina - Corporate Logo
T#:42167237
Part#: FB0198K
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$ 145.99 USD
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$ 145.99 USD
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Ideal for scheduled maintenance or as a preventive repair, the Accessory Drive Belt Kit offers dependable performance and peace of mind for BMW owners looking to maintain factory-quality operation and longevity
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OEM INA Alternator Pulley - Overrunning Type - E82, E88, E9x, F10, F22, F23, F25, F3x, F87
OEM INA Alternator Pulley - Overrunning Type - E82, E88, E9x, F10, F2...
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Ina - Corporate Logo
T#:42167226
Part#: EA0141
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$ 67.99 USD
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$ 67.99 USD
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Whether you're replacing a failing alternator pulley or performing preventive maintenance, this Alternator Pulley ensures your BMW continues to perform with factory precision and reliability.
Hitachi Voltage Regulator - BMW E36 Z3 E34
Hitachi Voltage Regulator - BMW E36 Z3 E34
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Hitachi - Corporate Logo
T#:48850070
Part#: 12321739435
Back Ordered
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$ 60.99 USD
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$ 60.99 USD
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Alternator voltage regulators are a crucial component that controls the alternator's output, preventing overcharging by adjusting the current to keep vehicle voltage within a safe range, protecting the battery and electrical system. Symptoms of failure include dim lights, battery warnings, or a dead battery, often requiring replacement, which can be internal or external to the alternator
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OEM INA Alternator Pulley - E60, E90
OEM INA Alternator Pulley - E60, E90
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Ina - Corporate Logo
T#:42167235
Part#: EA0202
Back Ordered
$ 46.99

This product was last offered at the strikethrough price on
06-19-2026

$ 33.99 USD
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$ 33.99 USD
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Whether you have a failing component or are performing preventive maintenance, this INA Alternator Pulley from Turner Motorsport is the perfect choice to keep your BMW’s electrical and accessory systems operating at peak performance.
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