BMW Electrical Sensors, Switches, & Relays

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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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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Burger Motorsport 4 BAR TMAP Sensor & Adapter - BMW N55/N54/S55 (2007...

T#:34885402

Part#: 4BAR TMAP

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$ 139.99 USD

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$ 139.99 USD

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Use these plug and play adapters to quickly adapt a 4bar TMAP sensor to your N54/N55/S55 BMW, raising the boost maximum boost range from 20psi factory up to 43psi.

Braille Performance Lightweight AGM Battery - B14115 - 11.5lbs ...

T#:558037

Part#: B14115

Ships in 5 Business Days

$ 204.99 USD

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$ 204.99 USD

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When building a car for the track, one of the most important factors to consider is weight. Stock batteries can weigh up to almost 50 pounds and are unnecessarily large, designed to power a host of systems not normally used in a track car (radios, lighting, etc.). What can you do to cut weight the weight without affecting your cars operation? This is where Braille Battery comes in with their long line of performance lightweight battery options! Designed to provide the highest cranking power possible while being up to 75% lighter, Braille Battery is one of the foremost leaders in automotive racing batteries with nothing but high quality, high output batteries in mind!

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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 10 Business Days

$ 31.99 USD

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$ 31.99 USD

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Braille Performance Lightweight Advanced AGM Battery - B2015 - 15lbs ...

T#:558038

Part#: B2015

Ships in 7 Business Days

$ 237.99 USD

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$ 237.99 USD

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When building a car for the track, one of the most important factors to consider is weight. Stock batteries can weigh up to almost 50 pounds and are unnecessarily large, designed to power a host of systems not normally used in a track car (radios, lighting, etc.). What can you do to cut weight the weight without affecting your cars operation? This is where Braille Battery comes in with their long line of performance lightweight battery options! Designed to provide the highest cranking power possible while being up to 75% lighter, Braille Battery is one of the foremost leaders in automotive racing batteries with nothing but high quality, high output batteries in mind! The B2015 is Braille's most popular non-carbon racing battery and is able to start larger engines easily for racing and offers daily driving capability for most 4 and 6 cylinders engine vehicles. Physical Specifications: BCI Group: All sizes Weight: 15lbs / 6.8kg Length: 6.8" / 173mm Width: 3.4" / 86mm Height: 6.1" / 155mm Polarity: Right Side Positive Performance Specifications: Voltage: 12 Full Charge Voltage: 13.2 Pulse Cranking Amps (PCA): 1067 Amp Hour (AH): 21 Life Cycle @ 10% DOD: 3100 *THIS BATTERY REQUIRES A CUSTOM MOUNTING SOLUTION. The size and weight are significantly smaller than a stock battery and will not be held in place by the stock battery mount*

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Braille Lightweight Advanced AGM Battery - B3121 - 21lbs

T#:558042

Part#: B3121

Ships in 6 Business Days

$ 270.99 USD

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$ 270.99 USD

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When building a car for the track, one of the most important factors to consider is weight. Stock batteries can weigh up to almost 50 pounds and are unnecessarily large, designed to power a host of systems not normally used in a track car (radios, lighting, etc.). What can you do to cut weight the weight without affecting your car's operation? This is where Braille Battery comes in with their long line of performance lightweight battery options! Designed to provide the highest cranking power possible while being up to 75% lighter, Braille Battery is one of the foremost leaders in automotive racing batteries with nothing but high quality, high output batteries in mind! The B3121 battery from Braille is their lightest do-everything battery available, offering 1380 pulse cranking amps that can crank over V8 engines with ease while still coming in at under 22 pounds, half of the weight of a standard Group 34 battery! This is thanks to their Advanced AGM racing technology that allows them to put a ton of power into a very small package. Physical Specifications: BCI Group: All sizes Weight: 21lbs / 9.5kg Length: 6.6" / 168mm Width: 5.2" / 132mm Height: 6.8" / 173mm Polarity: Right Side Positive Terminal Type: Steel terminal block with M6 bolt Performance Specifications: Voltage: 12v Recharge Voltage: 14.4V – 14.6V Maintenance charge voltage: 13.8V 5s Pulse Cranking Amps (PCA): 1380 10s PDC: 124 Amp Hour (Ah): 31 Watt Hour (Wh): 372 Life Cycle @ 10% DOD: 3100 Charging Temperature 0C to 50C Discharge Temperature range -40C to +60C Storage temperature -40C to +60C *THIS BATTERY REQUIRES A CUSTOM MOUNTING SOLUTION. The size and weight are significantly smaller than a stock battery and will not be held in place by the stock battery mount*

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Braille Performance Intensity Carbon Lithium-ION Battery - i48CX - 10...

This item is classified as Hazardous Materials and requires special shipping and handling. We cannot ship this item out of the US or with priority shi

T#:558047

Part#: I48CX

Ships in 4 Business Days

$ 1,164.99 USD

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$ 1,164.99 USD

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The ultra-lightweight, standard height I48CX lithium-ION battery from Braille Battery is a popular choice among BMW enthusiasts looking for a drop-in replacement battery that shaves off a ton of weight, 35 pounds in total! Thanks to the Group 48 design of this battery, no modifications are needed for installation. This is perfect for anyone looking to drive their car both on and off of the track, without any negative side effects, and wants a battery with a 10-15 year life span!

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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

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

Braille Performance GreenLite Lithium-ION Battery - G30 - 5.5lbs ...

T#:558046

Part#: G30

Ships on Sep 1, 2026

$ 522.99 USD

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$ 522.99 USD

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The G30 lithium battery from Braille is designed for the Import Tuner market (4 and 6 cylinder) for track use and has enough power for small black V8 race cars and hot rods with light electrical demands/accessories and standard compression. The G30 comes in the popular ETX 30 Group size, just like the B3121 AGM, so it is small and light enough to mount in a variety of locations. Incorporated in this battery is the same technology used in their race winning batteries used by nearly every OEM developer in classes ranging from SCCA to Formula 1.

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Burger Motorsports 2007-2012 TypeA 4BAR Adapter - E82/88 E9X E6X N54 ...

T#:599636

Part#: TYPEA4BARADAPTER

Ships in 2 Business Days

$ 35.00 USD

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$ 35.00 USD

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Use these plug and play adapters to quickly adapt a 4bar TMAP sensor to your N54/N55/S55 BMW, raising the boost maximum boost range from 20psi factory up to 43psi. For very high boost applications, this 4 BAR adapter can be used which requires Bosch 4 BAR sensor (Part # 281002576). SENSOR NOT INCLUDED, Please see T#587716

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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

Burger Motorsports 2013+ TypeB 4BAR Adapter - F2X F3X N54 N55 S55 ...

T#:599637

Part#: TYPEB4BARADAPTER

Back Ordered

$ 35.00 USD

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$ 35.00 USD

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Use these plug and play adapters to quickly adapt a 4bar TMAP sensor to your N54/N55/S55 BMW, raising the boost maximum boost range from 20psi factory up to 43psi. For very high boost applications, this 4 BAR adapter can be used which requires Bosch 4 BAR sensor (Part # 281002576). SENSOR NOT INCLUDED, Please see T#587716

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

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T#:382432

Part#: 13627839138

Ships on Nov 11, 2026

$ 53.99 USD

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$ 53.99 USD

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Referred to as the speed sensor & reference sensor

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

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$ 40.99 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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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.

Febi Relay - Replaces White/Green

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T#:16375128

Part#: 61368373700

Ships on Nov 11, 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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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

Intensity Lithium-ION Battery - i34RX - 11.5lbs

T#:54388454

Part#: I34RX

Ships in 6 Business Days

$ 949.99 USD

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$ 949.99 USD

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Whether you're building a dedicated track weapon or upgrading your street machine for ultimate reliability, unsprung and upper-chassis weight is the enemy of performance. Positioned high up in the engine bay or rear corners, a heavy factory battery negatively impacts your car's center of gravity.

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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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120 pc Fuse Assortment

T#:1809154

Part#: W5368

Ships in 1 Business Day

$ 13.68 USD

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$ 13.68 USD

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A must for any toolbox.

Morimoto Standalone Can-Bus Wiring Harness - H4 / 9003 - Priced Each ...

T#:54388428

Part#: H240

Ships on Sep 1, 2026

$ 21.99 USD

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$ 21.99 USD

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Remanufactured Alternator - 170A

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T#:594098

Part#: 12317802929

Ships on Sep 1, 2026

$ 541.55 USD

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$ 541.55 USD

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Replacement Alternator from Valeo

MINI N14 N18 Alternator - 120 Amp 439617

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T#:28803228

Part#: 12317619254

Ships on Sep 9, 2026

$ 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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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.

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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Connecting Cable For Starter Battery - Positive

T#:56724702

Part#: 61129259425

Special Order: No Guaranteed ETA

$ 52.99 USD

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$ 52.99 USD

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This starter battery connector cable is built to exacting OE specifications, delivering consistent power transfer from the battery.

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.

Febi Camshaft Position Sensor

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T#:368897

Part#: 12147518628

Special Order: No Guaranteed ETA

$ 48.99 USD

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$ 48.99 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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Starter Motor

T#:56544032

Part#: 12412354701

Special Order: No Guaranteed ETA

$ 146.99 USD

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$ 146.99 USD

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Built by Febi Bilstein, this complete assembly ensures seamless integration into your vehicle’s electrical and flywheel system.

Crankshaft Sensor With Sealing Ring

T#:56507847

Part#: 12141709616

Special Order: No Guaranteed ETA

$ 14.99 USD

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$ 14.99 USD

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Keep your BMW’s engine management system operating at peak performance with this replacement crankshaft position sensor from Febi Bilstein.

Alternator

T#:56544002

Part#: 12317501690

Special Order: No Guaranteed ETA

$ 245.99 USD

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$ 245.99 USD

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Trust Febi Bilstein for clean power output and dependable performance every time you start your engine.

Starter Motor

T#:56724716

Part#: 12412354693

Special Order: No Guaranteed ETA

$ 147.99 USD

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$ 147.99 USD

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This Febi Bilstein starter motor delivers the cranking performance your BMW needs for instant ignition response every time you turn the key.

Crankshaft Position Sensor

T#:56254756

Part#: 13627809334

Special Order: No Guaranteed ETA

$ 46.99 USD

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$ 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.

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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