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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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Rein N52 N54 Alternator Mounting Screw Set - 12310392568 - E9x, E8x, E60, E61, F10 5 Series, E83, F25, E70
Rein N52 N54 Alternator Mounting Screw Set - 12310392568 - E9x, E8x, ...
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Rein - Corporate Logo
T#:14795
Part#: 12310392568
In Stock
$ 20.99 USD
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BMW Set Of Alu. Screws Generator -
This item fits the following BMW Chassis:
E70 X5,E82,E83 X3,E85,E86,E89 Z4,E90,E92,E93,F10,F25 X3

Fits BMW Engines including:
N51,N52,N52N

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Hitachi Voltage Regulator - BMW E31 E32 E34 E36
Hitachi Voltage Regulator - BMW E31 E32 E34 E36
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Hitachi - Corporate Logo
T#:48850064
Part#: 12311747920
Ships in 7 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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Voltage Regulator
Voltage Regulator
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Beru - Corporate Logo
T#:596879
Part#: 12321350052
Back Ordered
$ 41.99

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

$ 39.71 USD
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$ 39.71 USD
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If you are having issues with voltage peaking, lights fading in and out as your driving, or your battery keeps dying despite the car running, It could be the result of a faulty voltage regulator. Voltage regulators control the amount of power coming from the alternator.
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Oil Pressure Switch (fits most BMWs)
Oil Pressure Switch (fits most BMWs)
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Rein - Corporate Logo
T#:363
Part#: 12617568480
In Stock
$ 7.99

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

$ 5.39 USD
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$ 5.39 USD
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Having your oil pressure light come on can mean very serious problems. Or it could just be this switch that fails several times over a car's lifespan. By no means should you ignore the warning light but replacing this sensor could be the actual culprit. The other problem with this switch is that oil can leak past its seal. With the oil under a lot of pressure at this point, the oil loss can be a serious concern. It's a simple replacement when doing most oil change work.

This Oil Pressure Switch fits the following BMWs:
1985-1991 E30 318i, 318is, 325e, 325i, M3
1992-1999 E36 318i/is, 325i/is, 328i/is, 323is, M3
1992-1997 E31 840i, 850i
1988-1994 E32 735i, 735iL, 740i, 740iL
1989-1995 E34 525i, 530i, 535i, 540i, M5
1995-2001 E38 740i, 740iL, 750i, 750iL
1996-2002 Z3 Roadster/Coupe 1.9, 2.3, 2.5, 2.8, 3.0, 3.2
1997-2003 E39 525i, 528i, 530i, 540i, M5
1999-2005 E46 323, 325, 328, 330, M3
2000-2003 Z8 roadster
2001-2006 E53 X5 X5 3.0i, X5 4.4i, X5 4.6is, X5 4.8is
2002+ E65/E66 745i, 745li, 750i, 750li, 760i, B7 Alpina
2003+ Z4 Roadster/Coupe Z4 2.5, 3.0, 3.0si
2004+ E60 525i, 530i, 535i, 545i, 550i, M5
2005+ E63/E64 645Ci, 650i, M6
2005+ E83 X3 X3 2.5, X3 3.0
2006+ E90/E92 325, 328, 330, 335
2007+ E70 X5 X5 3.0i, X5 4.8i
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Rein Relay - 61311378297 - E30, E36, E46, E9x, E8x, E28, E34, E39, E60, E61, F07, F10 5 Series, E24, E63 E64 F12 F13 6 Series, E23, E32, E38, E65 E66 F01 F02 7 Series, E31, E83, E53, E70, E71, E52
Rein Relay - 61311378297 - E30, E36, E46, E9x, E8x, E28, E34, E39, E6...
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Rein - Corporate Logo
T#:381382
Part#: 61311378297
Ships in 4 Business Days
$ 20.99 USD
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$ 20.99 USD
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Replacement relay for the typical white-green and orange relays found in your vehicle
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
$ 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 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
$ 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 Engine Crankshaft Position Sensor - 13627582842 - E9x, F3x, F8x, E8x, F22, F23, F87, F07, F10 5 Series, F12 F13 6 Series, F01 F02 7 Series, E84, F25, F26, E70, F15, E71, F16
Hitachi Engine Crankshaft Position Sensor - 13627582842 - E9x, F3x, F...
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Hitachi - Corporate Logo
T#:48850074
Part#: 13627582842
Ships in 7 Business Days
$ 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 Crankshaft Sensor - 13627806782 - F3x, F22, F23, G30 5 Series, F48, F39, G01, G02
Hitachi Crankshaft Sensor - 13627806782 - F3x, F22, F23, G30 5 Series...
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Hitachi - Corporate Logo
T#:48850081
Part#: 13627806782
Ships in 7 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 - 13627525015 - E9x, E8x, E60, E61, F10 5 Series, E63 E64 F12 F13 6 Series, F01 F02 7 Series, E83, F25, E70, E71
Hitachi Engine Crankshaft Position Sensor - 13627525015 - E9x, E8x, E...
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Hitachi - Corporate Logo
T#:48815471
Part#: 13627525015
Ships in 2 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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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
$ 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 Voltage Regulator - 12317550469 - E88 128i
Hitachi Voltage Regulator - 12317550469 - E88 128i
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Hitachi - Corporate Logo
T#:48815477
Part#: 12317550469
Ships in 7 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 - 13628697982 - F90, G30 5 Series, G90, G11 7 Series, G70, F91, F92, F93, G14 G15 G16 8 Series, G05, F95, G06, F96, G07, G99, G09
Hitachi Engine Camshaft Position Sensor - 13628697982 - F90, G30 5 Se...
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Hitachi - Corporate Logo
T#:48850059
Part#: 13628697982
Ships in 7 Business Days
$ 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 Crankshaft Position Sensor - BMW N20 N26 2.0L
Hitachi Crankshaft Position Sensor - BMW N20 N26 2.0L
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Hitachi - Corporate Logo
T#:48815475
Part#: 13627595860
Back Ordered
$ 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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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
$ 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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Rein Starter Mounting Hardware - 12410392577 - E9x, E8x, E60, E61, F10 5 Series, E83, F25, E70
Rein Starter Mounting Hardware - 12410392577 - E9x, E8x, E60, E61, F1...
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Rein - Corporate Logo
T#:594380
Part#: 12410392577
In Stock
$ 10.99 USD
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$ 10.99 USD
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Modern starter and water pump fasteners are torque-to-yield, meaning they stretch and can only be safely used once. Replace your hardware for peace of mind.
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
$ 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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