BMW Electrical Sensors, Switches, & Relays

New Alternator - 140amp | BMW E36 E34 M50 M52 S50 S52

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T#:25042544

Part#: 12311744567

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05-03-2026

$ 186.99 USD

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New Alternator - 180 Amp

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T#:26438187

Part#: 12317558220

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06-30-2026

$ 265.49 USD

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Crankshaft Position Sensor - E36 (OBDI), E34 M50/S50

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T#:579816

Part#: 52380

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$ 39.19 USD

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Common cause of misfires, poor fuel economy, or a crank no start situation. If your M50 or S50 has any of these symptoms, this crankshaft position sensor from Bavarian Autosport is a likely fix.

New Alternator - 120A

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T#:25042543

Part#: 12317501690

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$ 169.59 USD

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Alternator - 180amp

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T#:26438185

Part#: 12317837981

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$ 259.24 USD

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Bav Auto Camshaft Position Sensor - BMW E36 E39 Z3 M52 S52

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T#:639841

Part#: 12141703221

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05-03-2026

$ 30.39 USD

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Faulty camshaft sensors can lead to a number of issues such as hard starts, stalling at low speeds, and check engine (SES) lights. Restore your BMW's smooth operation and reliability by replacing it with a high-quality camshaft sensor from Bav Auto! From 1974 to 2019, Bavarian Autosport was one of the premier vendors for BMW and MINI auto parts. We are happy to preserve the Bav Auto legacy by continuing to carry their high-quality products into the future. All Bav Auto parts will remain unchanged in design and sourced from the same OEM suppliers to ensure long-lasting reliability. We trust these parts, accessories, and upgrades so confidently that we back every Bavarian Autosport branded component with a 2-year warranty.

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Alternator - 120amp

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T#:25042542

Part#: 12317831436

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Sale - Save 20% $ 222.99

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05-03-2026

$ 178.39 USD

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$ 222.99

This product was last offered at the strikethrough price on
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$ 178.39 USD

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Bav Auto Intake Air Temperature Sensor - BMW E9X M3 S65

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T#:639824

Part#: 13627792203

Ships on Jan 26, 2027

$ 24.99 USD

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$ 24.99 USD

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This sensor provides your BMW's control unit with intake temperature readings in order 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! From 1974 to 2019, Bavarian Autosport was one of the premier vendors for BMW and MINI auto parts. We are happy to preserve the Bav Auto legacy by continuing to carry their high-quality products into the future. All Bav Auto parts will remain unchanged in design and sourced from the same OEM suppliers to ensure long-lasting reliability. We trust these parts, accessories, and upgrades so confidently that we back every Bavarian Autosport branded component with a 2-year warranty.

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Bav Auto Camshaft Position Sensor - E38 740i 740iL 750iL

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T#:639840

Part#: 12141742185

Back Ordered

Sale - Save 15% $ 66.99

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05-03-2026

$ 56.94 USD

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Faulty camshaft sensors can lead to a number of issues such as hard starts, stalling at low speeds, and check engine (SES) lights. Restore your BMW's smooth operation and reliability by replacing it with a high-quality camshaft sensor from Bav Auto! From 1974 to 2019, Bavarian Autosport was one of the premier vendors for BMW and MINI auto parts. We are happy to preserve the Bav Auto legacy by continuing to carry their high-quality products into the future. All Bav Auto parts will remain unchanged in design and sourced from the same OEM suppliers to ensure long-lasting reliability. We trust these parts, accessories, and upgrades so confidently that we back every Bavarian Autosport branded component with a 2-year warranty.

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Hitachi Voltage Regulator - BMW E31 E32 E34 E36

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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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Bav Auto Crankshaft Position Sensor - Multiple BMWs

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T#:639826

Part#: 13627525015

Special Order: No Guaranteed ETA

$ 67.99 USD

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This crankshaft position sensor provides the ECU with the engine speed signal. It is mounted in either the engine block or the bell housing of the transmission on most cars. From 1974 to 2019, Bavarian Autosport was one of the premier vendors for BMW and MINI auto parts. We are happy to preserve the Bav Auto legacy by continuing to carry their high-quality products into the future. All Bav Auto parts will remain unchanged in design and sourced from the same OEM suppliers to ensure long-lasting reliability. We trust these parts, accessories, and upgrades so confidently that we back every Bavarian Autosport branded component with a 2-year warranty.

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Voltage Regulator

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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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Elring Eccentric Shaft Sensor Seal Plug - N52 3.0L

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T#:348099

Part#: 11127528242

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$ 8.99 USD

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$ 8.99 USD

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Rubber seals are often hardened and damaged by excessive heat and constant temperature changes causing them to become brittle and crack or split. If your seal has split, replace it with a new Elring seal for long reliability and to prevent further problems.

Elring is one of the biggest OEM names in the manufacturing of high quality gaskets that are available for very affordable prices. Elring has supplied many automotive names for years with the gaskets that seal your car's components from day 1 so you can rest assured that these components will last for a long time to come!

Fits the following BMW engines:
N52 3.0L

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Hitachi Camshaft Position Sensor - Intake - BMW M52TU M54

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T#:48850072

Part#: 12147539165

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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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Battery Tender Plus Advanced Battery Charging System

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T#:49892371

Part#: BTT0210128

In Stock at Vendor

$ 69.99 USD

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

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T#:48815454

Part#: 13627525014

Ships in 6 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 - 13627525015 - E9x, E8x, E...

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T#:48815471

Part#: 13627525015

Ships in 1 Business Day

$ 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 Engine Crankshaft Position Sensor - 13627582842 - E9x, F3x, F...

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T#:48850074

Part#: 13627582842

Ships in 6 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 Camshaft Position Sensor - E39, E46, E53, E60, E63, E64, E65,...

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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 - 13627806782 - F3x, F22, F23, G30 5 Series...

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T#:48850081

Part#: 13627806782

Ships in 6 Business Days

$ 81.99 USD

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

Hitachi Voltage Regulator - 12317550469 - E88 128i

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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.

Bav Auto Temperature Sensor - BMW E39 E46 E9X E60 F01/02

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T#:639833

Part#: 13621433076

In Stock

Sale - Save 20% $ 14.99

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

$ 11.99 USD

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This is the coolant temperature sensor used in many BMW models from the late-1990s to the mid-2010s. The engine computer relies on the coolant temp to set the fuel mapping for the engine. As the car warms up the computer changes the fuel mixture. If your car is running a bit rich (too much fuel) it could be because this sensor is failing and not sending the correct info to the computer. This sensor is located in a variety of places depending on the engine. But it's one of those easy replacement items 'while you're in there' when doing a water pump or thermostat replacement. From 1974 to 2019, Bavarian Autosport was one of the premier vendors for BMW and MINI auto parts. We are happy to preserve the Bav Auto legacy by continuing to carry their high-quality products into the future. All Bav Auto parts will remain unchanged in design and sourced from the same OEM suppliers to ensure long-lasting reliability. We trust these parts, accessories, and upgrades so confidently that we back every Bavarian Autosport branded component with a 2-year warranty.

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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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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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17 X 23 X 3 / FPM RD

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T#:15015283

Part#: 13627792257

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$ 3.99

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

$ 1.99 USD

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$ 1.99 USD

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Replacement camshaft position sensor o-ring for N57/N57/M57 Diesels

Hitachi Crankshaft Position Sensor - BMW M52 S52 M54

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T#:48815470

Part#: 12141709616

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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

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T#:48850070

Part#: 12321739435

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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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BMW Electrical Sensors, Switches, & Relays

Sub-Categories

New Alternator - 140amp | BMW E36 E34 M50 M52 S50 S52

New Alternator - 180 Amp

Crankshaft Position Sensor - E36 (OBDI), E34 M50/S50

New Alternator - 120A

Alternator - 180amp

Bav Auto Camshaft Position Sensor - BMW E36 E39 Z3 M52 S52

Alternator - 120amp

Bav Auto Intake Air Temperature Sensor - BMW E9X M3 S65

Bav Auto Camshaft Position Sensor - E38 740i 740iL 750iL

Hitachi Voltage Regulator - BMW E31 E32 E34 E36

Bav Auto Crankshaft Position Sensor - Multiple BMWs

Voltage Regulator

Elring Eccentric Shaft Sensor Seal Plug - N52 3.0L

Hitachi Camshaft Position Sensor - Intake - BMW M52TU M54

Battery Tender Plus Advanced Battery Charging System

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

Hitachi Engine Crankshaft Position Sensor - 13627525015 - E9x, E8x, E...

Hitachi Engine Crankshaft Position Sensor - 13627582842 - E9x, F3x, F...

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

Hitachi Crankshaft Sensor - 13627806782 - F3x, F22, F23, G30 5 Series...

Hitachi Voltage Regulator - 12317550469 - E88 128i

Bav Auto Temperature Sensor - BMW E39 E46 E9X E60 F01/02

Hitachi Crankshaft Position Sensor - BMW N20 N26 2.0L

17 X 23 X 3 / FPM RD

Hitachi Crankshaft Position Sensor - BMW M52 S52 M54

Hitachi Voltage Regulator - BMW E36 Z3 E34

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