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

Add to Wish List

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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FAE Crankshaft Position Sensor

T#:583140

Part#: 13627525015

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$ 45.99 USD

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$ 45.99 USD

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Having a crank but no starting issue? This sensor is often the culprit

FAE Reference Sensor - E23, E24, E28, E30

T#:583144

Part#: 12141708619

Ships on Sep 8, 2026

$ 46.99 USD

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$ 46.99 USD

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Referred to as the speed sensor & crankshaft position sensor

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.

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

AAF Oil Pressure Sensor Relocate Kit - M20

T#:7593105

Part#: 116177

Ships in 3 Business Days

$ 71.99 USD

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$ 71.99 USD

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Since 2010, Advanced Auto Fabrication has been producing and developing both parts and full fledged race cars. Their knowledge base covers a wide range of vehicles both domestic and imported. In the specific case of BMW, the team at AAF has a particular affinity for building and designing components for BMW race cars. AAF's Oil Pressure Sensor Relocation Kit allows for an aftermarket low pressure switch as well as oil pressure sensor, or two 1/8' NPT pressure sensors to be installed. This can allow a gauge or light to be on the dash and still log oil pressure in a data logger. This kit also moves the oil pressure sensor away from the engine and onto the chassis (or any other spot) where is it much easier to access, or install larger size diameter sensors. Fits all M20 Engines. Features: 4AN Stainless Steel Braided Line Banjo Bolt and Fitting (installs onto block) 3 Way 1/8' NPT Tee Fitting, for hose from block and 2 sensors. Note: This kit does not come with sensors – the factory low pressure switch can NOT be used. An aftermarket 1/8″ NPT low pressure switch can be used with the factory wire.

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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

AAF Jump Post Relocation Bracket - E46

T#:7608844

Part#: 11648

In Stock at Vendor

$ 28.99 USD

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$ 28.99 USD

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Since 2010, Advanced Auto Fabrication has been producing and developing both parts and full fledged race cars. Their knowledge base covers a wide range of vehicles both domestic and imported. In the specific case of BMW, the team at AAF has a particular affinity for building and designing components for BMW race cars. The AAF E46 Jump Post Relocation Bracket makes it easy to adjust camber/caster on your race car by getting the factory jump post out of the way! In race car applications, the desired camber and caster settings can cause the strut tops and shock adjusters to interfere with the factory jump post. This kit takes just a few minutes to install and makes using strut braces and adjusting camber plates just that much safer and faster.

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FAE Crankshaft Position Sensor - E34, E36

T#:375961

Part#: 12141726066

Ships in 1-2 days

$ 56.99

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

$ 55.00 USD

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$ 55.00 USD

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Having a crank but no starting issue? This sensor is often the culprit

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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Water / Oil Temperature Sensor - E46, E90 E92 E39 and more

T#:7256

Part#: 13621433076

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$ 14.99 USD

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$ 14.99 USD

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This coolant / oil temperature sensor is mounted in the cylinder head and/or the oil filter housing and/or water pump/ thermostat housing. Also used as an oil temperature sensor on cars with SMG transmissions.

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Stop Light Switch

T#:31092548

Part#: 61316967601

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$ 13.99 USD

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$ 13.99 USD

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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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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

FAE Air Temperature Sensor - E36, E38, E39, E46, E53, E83

T#:596540

Part#: 13621739510

Ships on Sep 1, 2026

$ 12.99 USD

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$ 12.99 USD

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Monitors intake air temperature

FAE Oil Pressure Switch - E10, E12, E21, E23, E24, E28, E30

T#:16202

Part#: 61311354274

Ships on Sep 9, 2026

$ 7.13 USD

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$ 7.13 USD

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OIL PRESSURE SWITCH

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.