BMW Electrical Sensors, Switches, & Relays

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

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T#:25042544

Part#: 12311744567

In Stock

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05-03-2026

$ 186.99 USD

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$ 219.99

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$ 186.99 USD

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New Alternator - 180 Amp

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T#:26438187

Part#: 12317558220

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Sale - Save 15% $ 294.99

This product was last offered at the strikethrough price on
06-30-2026

$ 250.74 USD

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$ 294.99

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$ 250.74 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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Sale - Save 20% $ 48.99

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05-03-2026

$ 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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05-03-2026

$ 169.59 USD

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$ 211.99

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$ 169.59 USD

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

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T#:639841

Part#: 12141703221

In Stock

Sale - Save 20% $ 37.99

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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 - 180amp

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T#:26438185

Part#: 12317837981

In Stock

Sale - Save 15% $ 304.99

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05-03-2026

$ 259.24 USD

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$ 304.99

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$ 259.24 USD

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N52 Valvetronic Camshaft Adjuster Replacement Kit

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T#:5416764

Part#: 11377548388TMSKT

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Sale - Save 19% $ 220.99

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05-03-2026

$ 179.28 USD

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05-03-2026

$ 179.28 USD

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Includes new Valvetronic motor, gasket, and hardware. The Valv-tronic adjuster unit changes the the timing shaft to adjust the valve timing.

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

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$ 178.39 USD

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Bosch Starter Motor With Hardware

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T#:56110332

Part#: SR0492NKT4

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$ 273.99

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08-14-2026

$ 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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Bav Auto Intake Air Temperature Sensor - BMW E9X M3 S65

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T#:639824

Part#: 13627792203

Ships on Jan 28, 2027

Sale - Save 15% $ 24.99

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10-28-2026

$ 21.24 USD

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$ 24.99

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$ 21.24 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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Valvetronic Camshaft Adjuster replacement kit

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T#:15677492

Part#: 11127556161-KT

In Stock

Sale - Save 19% $ 220.99

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05-03-2026

$ 179.28 USD

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$ 220.99

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$ 179.28 USD

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Valv-tronic adjuster unit, Changes the the timing shaft to adjust the valve timing.

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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$ 66.99

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$ 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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Eccentric Shaft Sensor Kit

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T#:5416787

Part#: 11377524879TMSKT

In Stock

Sale - Save 18% $ 270.99

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05-03-2026

$ 221.57 USD

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Includes a new sensor as well as valve cover and eccentric gaskets for a complete service. The eccentric shaft sensor is known to fail and can be a costly repair at the dealer. Often caused by oil getting into the connection for the wiring harness and damaging the sensor and causing a check engine light. With this kit you get the the sensor along with new valve cover and eccentric shaft adjuster gaskets to ensure a complete leak free job.

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Eccentric Shaft Sensor Kit

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T#:15677508

Part#: 11127581215-KT

In Stock

Sale - Save 18% $ 270.16

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05-03-2026

$ 221.57 USD

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$ 270.16

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$ 221.57 USD

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The eccentric shaft sensor is known to fail and can be a costly repair at the dealer. Often caused by oil getting into the connection for the wiring harness and damaging the sensor and causing a check engine light. With this kit you get the the sensor along with new valve cover and eccentric shaft adjuster gaskets to ensure a complete leak free job.

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MINI Alternator - SEG Automotive 0125.711.078

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T#:54851993

Part#: 12317613445

In Stock

$ 564.99

This product was last offered at the strikethrough price on
07-16-2026

$ 563.99 USD

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$ 563.99 USD

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SEG Automotive Alternator - SEG Automotive 0121.715.118 - 12317560985...

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T#:54851991

Part#: 12317560985

Ships in 1 Business Day

$ 1,049.99

This product was last offered at the strikethrough price on
07-16-2026

$ 961.99 USD

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$ 961.99 USD

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SEG Automotive Starter - SEG Automotive 0001.108.460 - 12417610344 - ...

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T#:55857741

Part#: 12417610344

Ships in 1 Business Day

$ 368.99

This product was last offered at the strikethrough price on
07-16-2026

$ 340.99 USD

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$ 340.99 USD

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MINI Alternator - SEG Automotive 0124.325.157

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T#:54851988

Part#: 12317550319

Ships in 1 Business Day

$ 473.99

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07-16-2026

$ 436.99 USD

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$ 436.99 USD

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SEG Automotive Alternator - SEG Automotive 0124.515.223 - 12317519618...

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T#:54851980

Part#: 12317519618

Ships in 1 Business Day

$ 503.99

This product was last offered at the strikethrough price on
07-16-2026

$ 462.99 USD

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$ 462.99 USD

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SEG Automotive Alternator - SEG Automotive 0124.525.588 - 12317541694...

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T#:54851984

Part#: 12317541694

Ships in 1 Business Day

$ 521.99

This product was last offered at the strikethrough price on
07-16-2026

$ 474.99 USD

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$ 474.99 USD

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MINI Starter - SEG Automotive 0001.106.026

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T#:54851997

Part#: 12411489995

Ships in 1 Business Day

$ 432.99

This product was last offered at the strikethrough price on
07-16-2026

$ 406.99 USD

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$ 406.99 USD

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SEG Automotive B46 B48 New Starter Motor - 0001.170.202 - F3x 330i 43...

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T#:58965208

Part#: 0001.170.202

Ships on Nov 23, 2026

$ 216.99 USD

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$ 216.99 USD

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The smart choice for F-chassis owners who want their car starting on the first try, every time.

Starter Motor

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T#:59001784

Part#: 12417616698

Ships on Nov 23, 2026

$ 275.99 USD

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$ 275.99 USD

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On a MINI built for quick, spirited driving, there is no reason to put up with slow or hesitant cranking.

SEG Automotive New 150A Alternator - 0124.525.561 - E21, E30, E36, E4...

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T#:58965212

Part#: 0124.525.561

Ships on Nov 23, 2026

$ 487.99 USD

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$ 487.99 USD

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SEG Automotive, the company behind Bosch's starter motor and generator business, builds this brand-new 150-amp alternator with a freewheel pulley that smooths out belt loads for a quieter, longer-lasting accessory drive.

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SEG Automotive N47 N57 Starter Motor - 0001.148.508 - F3x, F10 5 Seri...

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T#:58965209

Part#: 0001.148.508

Ships on Nov 23, 2026

$ 274.99 USD

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$ 274.99 USD

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A healthy starter is what gets your BMW from parked to pulling away without a second thought.

Starter Motor

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T#:59001789

Part#: 12417570487

Ships on Nov 23, 2026

$ 325.99 USD

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$ 325.99 USD

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This SEG Automotive unit is built as a direct replacement for the factory 0.9 kW starter on the R50 Hatch and R52 Convertible.

SEG Automotive New 120A Alternator - 0124.515.052 - E46, E39 525i 530...

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T#:58965210

Part#: 0124.515.052

Ships on Nov 23, 2026

$ 485.99 USD

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$ 485.99 USD

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A strong charging system keeps everything from your ignition to your stereo working at its best, and a failing alternator can undermine all of it.

SEG Automotive Starter - 12418589891 - G30 540d xDrive

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T#:59001787

Part#: 12418589891

Ships on Nov 23, 2026

$ 276.99 USD

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$ 276.99 USD

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Modern G-chassis BMWs deliver serious performance, and none of it matters if the engine won't start.

SEG Automotive New Alternator - 0124.525.523 - E46 325i 325Ci 330Ci, ...

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T#:58965213

Part#: 0124.525.523

Ships on Nov 23, 2026

$ 495.99 USD

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$ 495.99 USD

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Your BMW's charging system powers everything from ignition to infotainment, so a weak alternator affects the whole car.

SEG Automotive Alternator - 12311711204 - E24 635CSi

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T#:59001785

Part#: 12311711204

Ships on Nov 23, 2026

$ 726.99 USD

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$ 726.99 USD

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The E24 M635CSi is one of BMW's great grand tourers, and keeping one healthy means a charging system you can count on.

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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$ 14.99

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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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Oil Temperature Sensor And Gauge Kit - Blue & Red - Multiple BMWs ...

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T#:401689

Part#: OILTEMPGAUGEBRKK

Back Ordered

Sale - Save 2% $ 196.99

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05-03-2026

$ 193.26 USD

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$ 196.99

This product was last offered at the strikethrough price on
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$ 193.26 USD

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The EVO series from ProSport Gauges is an award winning, industry leading option for those looking to push their car's limits. They allowing you to monitor crucial engine functions in one quick glance with advanced precision. Featuring a dual color readout, you can customize your readout to your liking. Offering a user friendly readout with a digital reading in the center with a bar-graph style sweep around the gauge as well.

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