BMW Electrical Sensors, Switches, & Relays

Vitesco Technologies MAP Sensor - BMW N20 N26 S55 S63

T#:39059260

Part#: 13627843531

In Stock

$ 93.99

This product was last offered at the strikethrough price on
06-28-2026

$ 90.99 USD

Add to Wish List

Qty

$ 90.99 USD

Add to Wish List

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.

Show More Show Less

Vitesco Mass Air Flow Sensor - N55, N52

T#:33512934

Part#: 13627593624

In Stock

$ 210.99 USD

Add to Wish List

Qty

$ 210.99 USD

Add to Wish List

The MAF of your vehicle decides the quantity of fuel that is fed to the injectors according to the volume of air coming through the intake.

OMP Battery Cut Off Switch / Kill Switch

T#:1614

Part#: EA-462

In Stock

$ 65.00 USD

Add to Wish List

Qty

$ 65.00 USD

Add to Wish List

OMP Battery Cut Off Switch / Kill Switch, for use in racecars as an emergency "kill switch", to depower the electrical system in the event of a crash or other emergency. This cut off switch is FIA approved, has 6 poles and alternator protection, as well as a removable key.

Show More Show Less

Hitachi Voltage Regulator - BMW E31 E32 E34 E36

T#:48850064

Part#: 12311747920

Ships in 6 Business Days

$ 37.99 USD

Add to Wish List

Qty

$ 37.99 USD

Add to Wish List

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.

Show More Show Less

Alternator Pulley - E82 E90 E92 E60

We Price Match - Give Us A Call or Chat!

T#:19332

Part#: 12317570152

Ships in 1 day

$ 66.99 USD

Add to Wish List

Qty

$ 66.99 USD

Add to Wish List

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

Show More Show Less

BMW B58 3.0L Oxygen Sensor - Downstream

T#:5229442

Part#: 11788611294

Ships in 2 Business Days

$ 159.99

This product was last offered at the strikethrough price on
04-10-2026

$ 138.99 USD

Add to Wish List

Qty

$ 138.99 USD

Add to Wish List

BMW B58 3.0L Oxygen Sensor - Downstream is essential for maintaining optimal engine performance and fuel efficiency. Turner Motorsport offers this high-quality replacement sensor designed to precisely measure exhaust oxygen levels, allowing the vehicle's computer to accurately adjust the air/fuel ratio and monitor emissions. A degraded oxygen sensor can lead to decreased engine performance, reduced fuel efficiency, and increased harmful emissions, potentially triggering the Check Engine Light and causing a failure in emissions testing.

Ensures Optimal Engine Performance: Accurately measures exhaust oxygen levels for precise air/fuel ratio adjustments.
Improves Fuel Efficiency: Helps maintain proper fuel mixture, reducing fuel consumption.
Reduces Harmful Emissions: Keeps emissions in check, ensuring compliance with environmental standards.
Prevents Check Engine Light Activation: Helps avoid unnecessary warning lights and potential emissions test failures.
Quality Replacement: High-grade sensor designed specifically for the BMW B58 3.0L engine.

Show More Show Less

Flasher/Hazard Light Relay

T#:31125654

Part#: 61361388533

Special Order: No Guaranteed ETA

$ 33.99 USD

Add to Wish List

Qty

$ 33.99 USD

Add to Wish List

Voltage Regulator

T#:596879

Part#: 12321350052

In Stock at Vendor

$ 41.99

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

$ 40.99 USD

Add to Wish List

Qty

$ 40.99 USD

Add to Wish List

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.

Show More Show Less

Pressure Differential Sensor

T#:39329319

Part#: 13628657300

In Stock

$ 52.99

This product was last offered at the strikethrough price on
07-02-2026

$ 51.99 USD

Add to Wish List

Qty

$ 51.99 USD

Add to Wish List

Oil Level Sensor

T#:39261793

Part#: 12615A740A3

In Stock

Sale - Save 5% $ 243.99

This product was last offered at the strikethrough price on
07-02-2026

$ 231.79 USD

Add to Wish List

Qty

Sale - Save 5%

$ 243.99

This product was last offered at the strikethrough price on
07-02-2026

$ 231.79 USD

Add to Wish List

Flasher/Hazard Light Relay

T#:31522987

Part#: 61311371909

In Stock

$ 20.37

This product was last offered at the strikethrough price on
07-15-2026

$ 18.57 USD

Add to Wish List

Qty

$ 18.57 USD

Add to Wish List

Hitachi Camshaft Position Sensor - BMW E9X F3X F8X N20 N52 N55 S55 ...

T#:48815454

Part#: 13627525014

Ships in 6 Business Days

$ 40.00 USD

Add to Wish List

Qty

$ 40.00 USD

Add to Wish List

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.

Show More Show Less

Hitachi Engine Camshaft Position Sensor - BMW S63M N63B/N63M/N63R S68...

T#:48850059

Part#: 13628697982

Ships in 6 Business Days

$ 48.99 USD

Add to Wish List

Qty

$ 48.99 USD

Add to Wish List

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.

Show More Show Less

Walker MAP Sensor - BMW N20 N26 S55 S63

T#:39059258

Part#: 13627843531

In Stock at Vendor

$ 163.99

This product was last offered at the strikethrough price on
04-10-2026

$ 135.99 USD

Add to Wish List

Qty

$ 135.99 USD

Add to Wish List

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.

Show More Show Less

Hitachi Camshaft Position Sensor - Intake - BMW M52TU M54

T#:48850072

Part#: 12147539165

In Stock at Vendor

$ 41.99 USD

Add to Wish List

Qty

$ 41.99 USD

Add to Wish List

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)

Show More Show Less

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

T#:48850055

Part#: 12147518628

Ships in 2 Business Days

$ 71.99 USD

Add to Wish List

Qty

$ 71.99 USD

Add to Wish List

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.

Show More Show Less

Hitachi Engine Crankshaft Position Sensor - BMW N52 N54 S85 S65 S63 ...

T#:48815471

Part#: 13627525015

Ships in 6 Business Days

$ 66.99 USD

Add to Wish List

Qty

$ 66.99 USD

Add to Wish List

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.

Show More Show Less

Hitachi Engine Crankshaft Position Sensor - BMW F2X F3X

T#:48850074

Part#: 13627582842

Ships in 6 Business Days

$ 184.99 USD

Add to Wish List

Qty

$ 184.99 USD

Add to Wish List

Engine cranks but doesn't start? This sensor is often the issue.

Hitachi Crankshaft Sensor - BMW B46 B48 B58

T#:48850081

Part#: 13627806782

Ships in 6 Business Days

$ 81.99 USD

Add to Wish List

Qty

$ 81.99 USD

Add to Wish List

Tells the computer whether the timing is correct in the engine.

Hitachi Voltage Regulator - BMW E88 N52

T#:48815477

Part#: 12317550469

Ships in 6 Business Days

$ 79.99 USD

Add to Wish List

Qty

$ 79.99 USD

Add to Wish List

Supplies power to your car's electronics and recharges the battery.

Oil Level Sensor

T#:39329321

Part#: 12615A740A2

In Stock

$ 225.99 USD

Add to Wish List

Qty

$ 225.99 USD

Add to Wish List

Hitachi Crankshaft Position Sensor - BMW M52 S52 M54

T#:48815470

Part#: 12141709616

Back Ordered

$ 32.99 USD

Add to Wish List

Qty

$ 32.99 USD

Add to Wish List

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.

Show More Show Less

Hitachi Crankshaft Position Sensor - BMW N20 N26 2.0L

T#:48815475

Part#: 13627595860

Back Ordered

$ 68.99 USD

Add to Wish List

Qty

$ 68.99 USD

Add to Wish List

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.

Show More Show Less

OEM INA Alternator Pulley - Overrunning Type - E82, E88, E9x, F10, F2...

T#:42167226

Part#: EA0141

Back Ordered

$ 71.99 USD

Add to Wish List

Qty

$ 71.99 USD

Add to Wish List

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

T#:48850070

Part#: 12321739435

Back Ordered

$ 60.99 USD

Add to Wish List

Qty

$ 60.99 USD

Add to Wish List

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

Show More Show Less

Accessory Drive Belt Kit - E34, E83

T#:42167237

Part#: FB0198K

Back Ordered

$ 166.99 USD

Add to Wish List

Qty

$ 166.99 USD

Add to Wish List

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

Show More Show Less

OEM INA Alternator Pulley - E60, E90

T#:42167235

Part#: EA0202

Back Ordered

$ 46.99

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

$ 33.99 USD

Add to Wish List

Qty

$ 33.99 USD

Add to Wish List

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.

Show More Show Less

Project Cars

SELECT YOUR BMW

BMW Electrical Sensors, Switches, & Relays

Sub-Categories

Vitesco Technologies MAP Sensor - BMW N20 N26 S55 S63

Vitesco Mass Air Flow Sensor - N55, N52

OMP Battery Cut Off Switch / Kill Switch

Hitachi Voltage Regulator - BMW E31 E32 E34 E36

Alternator Pulley - E82 E90 E92 E60

BMW B58 3.0L Oxygen Sensor - Downstream

Flasher/Hazard Light Relay

Voltage Regulator

Pressure Differential Sensor

Oil Level Sensor

Flasher/Hazard Light Relay

Hitachi Camshaft Position Sensor - BMW E9X F3X F8X N20 N52 N55 S55 ...

Hitachi Engine Camshaft Position Sensor - BMW S63M N63B/N63M/N63R S68...

Walker MAP Sensor - BMW N20 N26 S55 S63

Hitachi Camshaft Position Sensor - Intake - BMW M52TU M54

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

Hitachi Engine Crankshaft Position Sensor - BMW N52 N54 S85 S65 S63 ...

Hitachi Engine Crankshaft Position Sensor - BMW F2X F3X

Hitachi Crankshaft Sensor - BMW B46 B48 B58

Hitachi Voltage Regulator - BMW E88 N52

Oil Level Sensor

Hitachi Crankshaft Position Sensor - BMW M52 S52 M54

Hitachi Crankshaft Position Sensor - BMW N20 N26 2.0L

OEM INA Alternator Pulley - Overrunning Type - E82, E88, E9x, F10, F2...

Hitachi Voltage Regulator - BMW E36 Z3 E34

Accessory Drive Belt Kit - E34, E83

OEM INA Alternator Pulley - E60, E90

Select Vehicle

Purpose

Category

Brand

Price

Special Offers

Shipping

Narrow Results