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BMW Electrical Sensors, Switches, & Relays for BMW 5 Series E34 (1987-1995)

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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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Facet Crankshaft Position Sensor - E28, E30, E34

T#:554187

Part#: 12141720856

Ships in 2 Business Days

$ 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

Facet Engine Crankshaft Position Sensor - E24, E32, E34

T#:1195883

Part#: 12141720857

Ships in 2 Business Days

$ 77.99

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

$ 68.99 USD

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$ 68.99 USD

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Measures the speed and position of your engine's crankshaft.

Crankshaft Position Sensor - E34 535i E32 735i 735il

T#:1119

Part#: 12141720853

Ships in 3 Business Days

$ 63.99 USD

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$ 63.99 USD

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This crank shaft position sensor provides the ECU with the engine speed signal. It fits BMW E34 535i 1989-1991 E32 735i 735il 1988-1993 with M30 engine

Facet produces all of the goods they sell to be the best they can be in their market, while still remaining customer and environmentally focused. Since 1946 this company has delivered high-quality replacement auto parts by starting with extremely high quality raw materials and employing the most up to date automated manufacturing processes.

This item fits the following BMWs:
1989-1993 E34 BMW 535i
6/1987-1989 E24 BMW 633csi 635csi M6
1988-1993 E32 BMW 735i 735il

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Hitachi Voltage Regulator - BMW E31 E32 E34 E36

For vehicles with compact alternator

T#:48850064

Part#: 12311747920

Ships in 7 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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Facet Crankshaft Position Sensor - E31, E32, E34, E38

T#:387735

Part#: 12141729292

Ships in 1-2 days

$ 46.99 USD

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$ 46.99 USD

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

Facet Crankshaft Position Sensor - E36,E36 M3

T#:402844

Part#: 12141726065FAC

Ships in 1-2 days

$ 47.99 USD

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$ 47.99 USD

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The Crankshaft Position Sensor measures the speed and position of the crankshaft to determine the proper fuel and timing requirement for the best performance.

This item fits the following BMW Chassis:
E36 M3,E36

Fits BMW Engines including:
M50,S50

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Camshaft Position Sensor

T#:389865

Part#: 12141740959

Back Ordered

$ 64.99 USD

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$ 64.99 USD

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Facet Crankshaft Position Sensor - E28, E30, E34

T#:402192

Part#: 12141720852

Ships in 4 Business Days

$ 48.99 USD

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$ 48.99 USD

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

Crankshaft Position Sensor - E30 325e 325i 325is E34 525i

10X Entries Into Our F80 M3 Sweepstakes

T#:338003

Part#: 12141720852

Ships on Dec 2, 2026

Starting at $ 108.99 USD

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Starting at $ 108.99 USD

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This crank shaft position sensor (CPS) provides the engine computer with engine speed data via the harmonic balancer. It mounts off the engine block and reads the front crank pulley to tell the engine what position the engine internals are in. This sensor is crucial for starting the car as the ECU will not allow the engine to start without this signal. It fits all M20 engines in the E30 and E34. A lot of times the sensor is covered in oil, broken from a spinning belt, or the clearance to the pulley is not correct (should be .040"). Interchangeable with #12141720856.

Brand Options:
Original BMW - more expensive but higher quality and more consistent reliability. The sensor itself has a metal housing that is more durable and will not be affected by heat as much.
Aftermarket/Overseas manufacturer - cheaper than OE BMW but less quality and potentially less consistent. Plastic housing is more susceptible to damage from heat.

This item fits the following BMWs:
1987-1991 E30 BMW 325e 325es 325i 325is 325ix 325ic
1989-1990 E34 BMW 525i

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Liqui-Moly Battery Clamp Grease - 50 grams

10X Entries Into Our F80 M3 Sweepstakes
We Price Match - Give Us A Call or Chat!

T#:1195997

Part#: 20244

In Stock

31% off MSRP $ 7.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 5.50 USD

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31% off MSRP

$ 7.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 5.50 USD

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Excellent corrosion protection for your battery and other connections

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

10X Entries Into Our F80 M3 Sweepstakes

T#:401689

Part#: OILTEMPGAUGEBRKK

Ships on Jan 18, 2027

Sale - Save 2% $ 196.99

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

$ 193.26 USD

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Qty

Sale - Save 2%

$ 196.99

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

$ 193.26 USD

Add to Wish List

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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Hitachi Voltage Regulator - BMW E36 Z3 E34

For 100A Valeo alternators

T#:48850070

Part#: 12321739435

Back Ordered

$ 60.99 USD

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Qty

$ 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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