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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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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
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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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Genuine BMW Wiring Harness, Actuator Con - 61129241328
Genuine BMW Wiring Harness, Actuator Con - 61129241328
Genuine BMW - Corporate Logo
T#:139452
Part#: 61129241328
In Stock
Sale - Save 64% $ 316.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 114.00 USD
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$ 316.99

This product was last offered at the strikethrough price on
05-02-2026

$ 114.00 USD
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Genuine BMW Wiring Harness, Actuator Control Module -
This item fits the following BMW Chassis:
F10,F12,F13

Bosch Starter Motor With Hardware
Bosch Starter Motor With Hardware
Packaged by Turner - Corporate Logo
T#:56110332
Part#: SR0492NKT4
In Stock
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$ 261.99 USD
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$ 261.99 USD
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At the core is a brand-new Bosch Starter Motor, engineered to withstand extreme operating conditions while delivering immediate cranking speed. This kit includes also the required Genuine BMW Aluminum Mounting Screw Set.
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Genuine BMW Terminal Socket - Mcon 2.8 - Multiple BMWs
Genuine BMW Terminal Socket - Mcon 2.8 - Multiple BMWs
Genuine BMW - Corporate Logo
T#:40627
Part#: 12527567482
In Stock
Sale - Save 55% $ 1.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 0.89 USD
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Sale - Save 55%
$ 1.99

This product was last offered at the strikethrough price on
05-02-2026

$ 0.89 USD
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Used in a wide variety of BMW connectors, these terminal sockets can come in handy when working on your wiring components.
Knock Sensor
Knock Sensor
Bosch - Corporate Logo
T#:54388475
Part#: 13627636937
In Stock
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$ 29.99 USD
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$ 29.99 USD
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Keep your ignition timing razor-sharp and your engine safe from destructive detonation. This replacement Knock Sensor acts as your engine's first line of defense, constantly listening for pre-ignition "pinging" or knocking.
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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
New Item
$ 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 - 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
New Item
$ 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 - BMW F2X F3X
Hitachi Engine Crankshaft Position Sensor - BMW F2X F3X
Hitachi - Corporate Logo
T#:48850074
Part#: 13627582842
Ships in 6 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 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
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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 - Intake - BMW M52TU M54
Hitachi Camshaft Position Sensor - Intake - BMW M52TU M54
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 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
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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 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
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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 Voltage Regulator - BMW E88 N52
Hitachi Voltage Regulator - BMW E88 N52
Hitachi - Corporate Logo
T#:48815477
Part#: 12317550469
Ships in 6 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.
Genuine BMW Battery Management Electronics Control Module - BMW G09 G60 G70
Genuine BMW Battery Management Electronics Control Module - BMW G09 G...
Genuine BMW - Corporate Logo
T#:55785659
Part#: 61278882634
Ships in 3 Business Days
New Item
3% off MSRP $ 1,572.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 1,532.99 USD
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3% off MSRP
$ 1,572.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 1,532.99 USD
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When this critical high-voltage module succumbs to internal hardware failure or water intrusion, your PHEV BMW will instantly lock out its charging capabilities and disable all electric driving modes to protect the vehicle's complex electrical grid. Don't let a failed module keep your hybrid system sidelined. This Genuine BMW replacement unit is the exact factory-spec computer required to replace your corrupted original, fully restoring accurate electric range reporting, optimal cell balancing, and crucial factory safety parameters to your high-voltage accumulator pack.
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Genuine BMW Communication Wiring Harness CSC - Right - BMW G05 X5, G09 XM
Genuine BMW Communication Wiring Harness CSC - Right - BMW G05 X5, G0...
Genuine BMW - Corporate Logo
T#:49508960
Part#: 61278884872
Ships in 3 Business Days
New Item
5% off MSRP $ 259.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 247.99 USD
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5% off MSRP
$ 259.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 247.99 USD
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Genuine BMW communication wiring harness
Terminal Repair Kit
Terminal Repair Kit
Genuine BMW - Corporate Logo
T#:55281756
Part#: 61138TRKT
Ships in 3 Business Days
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$ 42.36 USD
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$ 42.36 USD
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This terminal repair kit is the ideal companion for refreshing damaged wiring pins and keeping your chassis' electrical system functioning flawlessly.
Genuine BMW Basic Cotrol Unit DME 8CT0-NOX
Genuine BMW Basic Cotrol Unit DME 8CT0-NOX
Genuine BMW - Corporate Logo
T#:49543753
Part#: 12145B32771
Ships in 5 Business Days
New Item
3% off MSRP $ 2,409.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 2,333.99 USD
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3% off MSRP
$ 2,409.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 2,333.99 USD
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Replaces faulty or broken cotrol unit
Ground Cable - B48/S58
Ground Cable - B48/S58
Genuine BMW - Corporate Logo
T#:50311456
Part#: 12425B586B0
Ships in 9 Business Days
New Item
3% off MSRP $ 60.99

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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3% off MSRP
$ 60.99

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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Your vehicle’s ground strap plays a vital role in maintaining a healthy electrical system. Exposure to heat, corrosion, and constant vibration can degrade the strap over time, resulting in weak or inconsistent electrical connections. When the ground strap begins to fail, symptoms can include hard starting, flickering or dim lights, warning messages, erratic sensor behavior, or complete no-start situations. Replacing a worn ground strap restores proper current flow, protects sensitive electronics, and keeps your engine and electrical systems operating reliably.
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Wire Pinning Kit - MLK 1.2 Female Jack
Wire Pinning Kit - MLK 1.2 Female Jack
Genuine BMW - Corporate Logo
T#:55281746
Part#: 125275WRKT
Ships in 9 Business Days
New Item
$ 37.40 USD
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$ 37.40 USD
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This Genuine BMW wiring repair kit is the ideal solution to refresh worn-out terminal connections in your Ultimate Driving Machine.
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
New Item
$ 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 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
New Item
$ 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 Voltage Regulator - BMW E36 Z3 E34
Hitachi Voltage Regulator - BMW E36 Z3 E34
Hitachi - Corporate Logo
T#:48850070
Part#: 12321739435
Back Ordered
New Item
$ 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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