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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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Crankshaft Position Sensor
Crankshaft Position Sensor
Facet - Corporate Logo
T#:6366585
Part#: 12141721861
In Stock
$ 64.11

This product was last offered at the strikethrough price on
05-03-2026

$ 57.99 USD
Limited Qty Sale
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$ 64.11

This product was last offered at the strikethrough price on
05-03-2026

$ 57.99 USD
Limited Qty Sale
Free Shipping on orders $49 and up
Add to Wish List
Facet Crankshaft Position Sensor - E28, E30, E34
Facet Crankshaft Position Sensor - E28, E30, E34
Facet - Corporate Logo
T#:554187
Part#: 12141720856
Ships in 1 Business Day
$ 45.99 USD
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$ 45.99 USD
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Having a crank but no starting issue? This sensor is often the culprit
Facet Engine Crankshaft Position Sensor - E24, E32, E34
Facet Engine Crankshaft Position Sensor - E24, E32, E34
Facet - Corporate Logo
T#:1195883
Part#: 12141720857
Ships in 1 Business Day
$ 77.99

This product was last offered at the strikethrough price on
05-03-2026

$ 69.99 USD
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$ 69.99 USD
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Measures the speed and position of your engine's crankshaft.
Facet Crankshaft Position Sensor - E36
Facet Crankshaft Position Sensor - E36
Facet - Corporate Logo
T#:378157
Part#: 12141247259
Ships in 2 Business Days
$ 70.00

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

$ 63.99 USD
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$ 63.99 USD
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Having a crank but no starting issue? This sensor is often the culprit
Facet Engine Crankshaft Position Sensor - E31, E32
Facet Engine Crankshaft Position Sensor - E31, E32
Facet - Corporate Logo
T#:591363
Part#: 12141720291
Ships in 1 Business Day
$ 75.99

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

$ 67.99 USD
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$ 67.99 USD
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Measures the speed and position of your engine's crankshaft.
Crankshaft Position Sensor - E34 535i E32 735i 735il
Crankshaft Position Sensor - E34 535i E32 735i 735il
Facet - Corporate Logo
T#:1119
Part#: 12141720853
Ships in 1 Business Day
$ 63.99 USD
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$ 63.99 USD
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This crank shaft position sensor provides the ECU with the engine speed signal. It fits BMW E34 535i 1989-1991 E32 735i 735il 1988-1993 with M30 engine

Facet produces all of the goods they sell to be the best they can be in their market, while still remaining customer and environmentally focused. Since 1946 this company has delivered high-quality replacement auto parts by starting with extremely high quality raw materials and employing the most up to date automated manufacturing processes.

This item fits the following BMWs:
1989-1993 E34 BMW 535i
6/1987-1989 E24 BMW 633csi 635csi M6
1988-1993 E32 BMW 735i 735il
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Facet MAP Sensor - BMW N20 N26 S55 S63
Facet MAP Sensor - BMW N20 N26 S55 S63
Facet - Corporate Logo
T#:39059259
Part#: 13627843531
Ships in 1 Business Day
$ 118.99

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

$ 114.99 USD
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$ 114.99 USD
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This is a replacement Manifold Absolute Pressure sensor Located on the charge air cooler. The MAP controls the amount of fuel that goes through the injectors based on the pressure of air at the intake manifold. If your vehicle is giving you a MAP code, replace it immediately to ensure you get the best gas mileage and performance. It is common for this part to fail slowly and cause poor fuel mileage and hampered performance. When it fails, the vehicle will stutter and stall as it falls into a limp mode. One way to check if your MAP is bad is to unplug the connector before starting your car. If it idles well (compared to a previous poor idle), your MAP sensor likely needs to be replaced. If you let this maintenance part go, your fuel economy will suffer as too much fuel is going into the engine and not being burned. A great way to give your vehicle an efficiency boost.
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Hitachi Voltage Regulator - BMW E31 E32 E34 E36
Hitachi Voltage Regulator - BMW E31 E32 E34 E36
Hitachi - Corporate Logo
T#:48850064
Part#: 12311747920
Ships in 6 Business Days
$ 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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Facet Intake Air Temperature Sensor - BMW E9X M3 S65
Facet Intake Air Temperature Sensor - BMW E9X M3 S65
Facet - Corporate Logo
T#:43885733
Part#: 13627792203
Ships in 1 Business Day
$ 28.99

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

$ 25.99 USD
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$ 25.99 USD
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This sensor provides your BMW's control unit with intake temperature readings, enabling it to run optimally in any condition. If this sensor has failed, your BMW may be suffering from more performance loss than you realize. Replace your IAT sensor to ensure proper temperature readings and restore lost performance!
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Facet Crankshaft Position Sensor - E36,E36 M3
Facet Crankshaft Position Sensor - E36,E36 M3
Facet - Corporate Logo
T#:402844
Part#: 12141726065FAC
Ships in 1-2 days
$ 47.99 USD
Free Shipping on orders $49 and up
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$ 47.99 USD
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The Crankshaft Position Sensor measures the speed and position of the crankshaft to determine the proper fuel and timing requirement for the best performance.

This item fits the following BMW Chassis:
E36 M3,E36

Fits BMW Engines including:
M50,S50

 

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Facet Crankshaft Position Sensor - E31, E32, E34, E38
Facet Crankshaft Position Sensor - E31, E32, E34, E38
Facet - Corporate Logo
T#:387735
Part#: 12141729292
Ships in 1-2 days
$ 46.99 USD
Free Shipping on orders $49 and up
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$ 46.99 USD
Free Shipping on orders $49 and up
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Having a crank but no starting issue? This sensor is often the culprit
Facet Crankshaft Position Sensor - E36
Facet Crankshaft Position Sensor - E36
Facet - Corporate Logo
T#:1195837
Part#: 12141734818
Ships in 1-2 days
$ 56.99

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

$ 55.99 USD
Free Shipping on orders $49 and up
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$ 55.99 USD
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Having a crank but no starting issue? This sensor is often the culprit
Camshaft Position Sensor
Camshaft Position Sensor
Facet - Corporate Logo
T#:389865
Part#: 12141740959
Back Ordered
$ 64.99 USD
Free Shipping
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$ 64.99 USD
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Facet Crankshaft Position Sensor - E28, E30, E34
Facet Crankshaft Position Sensor - E28, E30, E34
Facet - Corporate Logo
T#:402192
Part#: 12141720852
In Stock
$ 48.99 USD
Free Shipping on orders $49 and up
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$ 48.99 USD
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Having a crank but no starting issue? This sensor is often the culprit
Facet Ping Sensor
Facet Ping Sensor
Facet - Corporate Logo
T#:1195838
Part#: 13627566785
Ships in 1 Business Day
$ 109.99

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

$ 98.99 USD
Free Shipping on orders $49 and up
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$ 98.99 USD
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Sometimes referred to as a knock sensor
Hitachi Voltage Regulator - BMW E88 N52
Hitachi Voltage Regulator - BMW E88 N52
Hitachi - Corporate Logo
T#:48815477
Part#: 12317550469
Ships in 6 Business Days
$ 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.
Hitachi Engine Camshaft Position Sensor - BMW S63M N63B/N63M/N63R S68X/S68T
Hitachi Engine Camshaft Position Sensor - BMW S63M N63B/N63M/N63R S68...
Hitachi - Corporate Logo
T#:48850059
Part#: 13628697982
Ships in 6 Business Days
$ 48.99 USD
Add to Wish List
$ 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
Hitachi - Corporate Logo
T#:48850072
Part#: 12147539165
Ships in 1 Business Day
$ 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
Hitachi - Corporate Logo
T#:48850074
Part#: 13627582842
Ships in 6 Business Days
$ 184.99 USD
Free Shipping on orders $49 and up
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$ 184.99 USD
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Engine cranks but doesn't start? This sensor is often the issue.
Hitachi Camshaft Position Sensor - BMW E9X F3X F8X N20 N52 N55 S55
Hitachi Camshaft Position Sensor - BMW E9X F3X F8X N20 N52 N55 S55 ...
Hitachi - Corporate Logo
T#:48815454
Part#: 13627525014
Ships in 6 Business Days
$ 40.00 USD
Free Shipping on orders $49 and up
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$ 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 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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Hitachi Crankshaft Sensor - BMW B46 B48 B58
Hitachi Crankshaft Sensor - BMW B46 B48 B58
Hitachi - Corporate Logo
T#:48850081
Part#: 13627806782
Ships in 6 Business Days
$ 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 Crankshaft Position Sensor - BMW N52 N54 S85 S65 S63
Hitachi Engine Crankshaft Position Sensor - BMW N52 N54 S85 S65 S63 ...
Hitachi - Corporate Logo
T#:48815471
Part#: 13627525015
Ships in 6 Business Days
$ 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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Ping / Knock Sensor
Ping / Knock Sensor
Facet - Corporate Logo
T#:31522954
Part#: 12141487246
In Stock
$ 44.99

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

$ 34.99 USD
Limited Qty Sale
Free Shipping on orders $49 and up
Add to Wish List
$ 44.99

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

$ 34.99 USD
Limited Qty Sale
Free Shipping on orders $49 and up
Add to Wish List
Hitachi Crankshaft Position Sensor - BMW N20 N26 2.0L
Hitachi Crankshaft Position Sensor - BMW N20 N26 2.0L
Hitachi - Corporate Logo
T#:48815475
Part#: 13627595860
Back Ordered
$ 68.99 USD
Free Shipping on orders $49 and up
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$ 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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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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Hitachi Voltage Regulator - BMW E36 Z3 E34
Hitachi Voltage Regulator - BMW E36 Z3 E34
Hitachi - Corporate Logo
T#:48850070
Part#: 12321739435
Back Ordered
$ 60.99 USD
Free Shipping on orders $49 and up
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$ 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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