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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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OBDI Conversion Part - Water Temp Sensor Wiring Adaptor

T#:508

Part#: TEN9989M50

In Stock

Sale - Save 25% $ 89.99

This product was last offered at the strikethrough price on
06-13-2026

$ 67.49 USD

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Sale - Save 25%

$ 89.99

This product was last offered at the strikethrough price on
06-13-2026

$ 67.49 USD

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Made in the USA

The TMS Water Temp Sensor Wiring Adaptor is needed when you are upgrading to OBD-I (1992-1995 components) on a 3.2 or 2.8 liter engine. These earlier engines use two separate water temp sensors in the head, one for the ECU and one for the instrument cluster. Most of the 3.2 and some of the 2.8 liter engines do not have two holes drilled in the head for the early water temp sensors. This is due to the fact that the 3.2 and 2.8 engines used a combined water temp sensor. So we designed a easy to use plug and play wiring harness. The benefits are: No cutting and splicing, no trying to fine plugs and pins. We also suggest using TMS "3.2 in a 3.0" Coolant Hose Adapter P/N: TEN9931007 to make your life easier.

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BMW E6X / E8X / E9X - N52 Replacement Starter Kit

T#:15777314

Part#: SR0492NKT2-KT

In Stock

Sale - Save 8% $ 296.99

This product was last offered at the strikethrough price on
03-17-2026

$ 273.79 USD

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Sale - Save 8%

$ 296.99

This product was last offered at the strikethrough price on
03-17-2026

$ 273.79 USD

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Is your car having trouble starting? Does your starter click when you turn the key? Sounds like it's time for a new starter motor! Includes new starter with no core charge, intake gaskets, throttle body gasket and hardware.

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Febi Camshaft Position Sensor - Intake - E39 E46 E53 E60 E83 Z3 Z4 ...

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T#:591868

Part#: 12147539165

Ships in 4 Business Days

$ 31.99 USD

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$ 31.99 USD

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Valeo Voltage Regulator - Valeo - E53, E60, E63, E64, E70

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T#:1196078

Part#: 12318510090

Ships in 1 Business Day

$ 91.37 USD

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$ 91.37 USD

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OEM replacement for you BMW alternator fixing charging issues

Voltage Regulator

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T#:594108

Part#: 12317603775

Ships in 1 Business Day

$ 71.22

This product was last offered at the strikethrough price on
05-04-2026

$ 70.45 USD

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$ 70.45 USD

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Have you noticed inconsistent electrical power in your interior lately? Your voltage regulator is responsible for maintaining a constant voltage out from the alternator.

Febi Outdoor Temperature Sensor / Probe

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T#:382731

Part#: 65816936953

Ships in 1 Business Day

$ 20.47 USD

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$ 20.47 USD

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Common fix for incorrect OBC temperature readings

Eccentric Shaft Sensor Kit

T#:15677508

Part#: 11127581215-KT

In Stock

Sale - Save 18% $ 270.16

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

$ 221.57 USD

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Qty

Sale - Save 18%

$ 270.16

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

$ 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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Alternator

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T#:594101

Part#: 12318570672

In Stock at Vendor

$ 1,094.99

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

$ 1,062.99 USD

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$ 1,062.99 USD

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Replacement Alternator from Valeo

Febi Crankshaft Position Sensor - E31, E38, E39, E52, E60, E63, E64, ...

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T#:382432

Part#: 13627839138

Ships on Oct 20, 2026

$ 53.99 USD

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$ 53.99 USD

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Referred to as the speed sensor & reference sensor

Febi Relay - Replaces White/Green

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T#:16375128

Part#: 61368373700

Ships on Oct 20, 2026

Sale - Save 28% $ 15.99

This product was last offered at the strikethrough price on
05-15-2026

$ 11.56 USD

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Qty

Sale - Save 28%

$ 15.99

This product was last offered at the strikethrough price on
05-15-2026

$ 11.56 USD

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This relay is often the fuel pump relay for many BMW models. To ensure the relay is correct for your car please check the pin locations

Bosch Starter Motor With Hardware

T#:56110332

Part#: SR0492NKT4

In Stock

$ 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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Febi Alternator Mount Bushing - E12, E21, E23, E24, E28, E30 ...

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T#:381815

Part#: 12311268433

In Stock

$ 2.99 USD

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$ 2.99 USD

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Reduces alternator vibration.

AUTOTECKNIC Dry Carbon Fiber Battery Terminal Cover - G87 M2 ...

T#:21012623

Part#: ATK-BM-0420-G87

Ships in 7 Business Days

$ 495.00 USD

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$ 495.00 USD

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The boldly styled G87 already touts carbon features but carbon fiber is not very often displayed in the engine bay. If you are looking to give your engine bay some carbon spark, AUTOTECKNIC introduces you to their dry carbon battery terminal cover to beautify your engine bay and bring a smile to your face every time you open the hood of your S58 monster! Made from high-quality carbon, this product is sure to stand the test of time!

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Remanufactured Alternator - 170A

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T#:594098

Part#: 12317802929

Ships on Aug 11, 2026

$ 323.99 USD

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$ 323.99 USD

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Replacement Alternator from Valeo

MINI N14 N18 Alternator - 120 Amp 439617

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T#:28803228

Part#: 12317619254

In Stock

$ 374.99 USD

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$ 374.99 USD

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MINI N14 N18 Alternator is an essential component for powering the electrical system of your Mini. Engineered to provide reliable performance, this alternator ensures your Mini stays running smoothly. Upgrade your Mini with this genuine alternator for dependable power generation.

Powers the electrical system
Reliable performance
Ensures smooth operation
Genuine Mini part

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Febi Camshaft Position Sensor

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T#:368897

Part#: 12147518628

In Stock at Vendor

$ 48.99

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

$ 40.99 USD

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$ 40.99 USD

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A faulty cam sensor can lead to issues like difficulty starting and stalling at low speeds. Replacing the cam sensor often resolves many drivability problems. Requires O-ring #12141748398 (not included).

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Febi Engine Oil Level Sensor - 12617607909

T#:54816237

Part#: 12617607909

Special Order: No Guaranteed ETA

$ 121.99

This product was last offered at the strikethrough price on
06-10-2026

$ 95.99 USD

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$ 95.99 USD

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Reliable German replacement sensor keeps your BMW oil levels monitored.

Crankshaft Position Sensor

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T#:16175684

Part#: 13627525015

Special Order: No Guaranteed ETA

$ 46.99 USD

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$ 46.99 USD

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Crankshaft Position Sensor

T#:56254775

Part#: 13627582842

Special Order: No Guaranteed ETA

$ 19.99 USD

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$ 19.99 USD

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This Febi Crankshaft Position Sensor ensures your ECU receives ultra-fast, precise engine speed and position data under all driving conditions.

Engine Oil Level Sensor - 12618608780

T#:54816234

Part#: 1000540

Special Order: No Guaranteed ETA

$ 116.99

This product was last offered at the strikethrough price on
06-10-2026

$ 89.00 USD

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$ 89.00 USD

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When BMW threw out the mechanical dipstick, they shifted the responsibility of protecting your engine entirely to the electronic oil level sensor. On the street or the track, knowing your oil level is non-negotiable. If your dashboard sensor readout is throwing errors or lagging, your N52, N54, N55, S55, or N63 engine is operating in the dark. This Febi Bilstein engine oil level sensor is an excellent, cost-effective alternative to expensive dealership parts counter pieces. Febi is an industry-trusted German manufacturer, ensuring this sensor reads with the exact same precision and calibration as original equipment. Keep your ultimate driving machine properly monitored and safe from oil starvation. Key Features Premium German Engineering: Manufactured by Febi Bilstein to match original BMW operational tolerances. Critical Engine Protection: Restores accurate iDrive/instrument cluster oil volume and temperature readouts. Exact Factory Fit: Features the correct 3-pin oval plug orientation for a seamless plug-and-play install. Track-Day Insurance: Ensures your electronic monitoring system functions flawlessly under heavy load. Turner Tip: Oil level sensors are notorious for failing due to age and repeated heat cycles. Because this sensor installs directly into the bottom of the oil pan, make this swap part of your next oil service kit checklist.

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Crankshaft Position Sensor

T#:56254756

Part#: 13627809334

Special Order: No Guaranteed ETA

$ 46.99 USD

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Qty

$ 46.99 USD

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Maintain the crisp throttle response and reliable performance of your BMW with this Febi Bilstein Crankshaft Position Sensor.

Alternator

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T#:594102

Part#: 12311247288

Back Ordered

$ 547.99

This product was last offered at the strikethrough price on
05-08-2026

$ 532.99 USD

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Qty

$ 532.99 USD

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Replacement Alternator from Valeo

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