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BMW E28 Electrical Sensors, Switches, & Relays

BMW E28 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.
You're currently viewing parts for your (E28) 5-Series 1982-1988. Reset your chassis
For accurate results, specify your model below.
OEM Bosch Coolant Temperature Sensor - E36 318i 325i M3 1992-1995, E30, E34, E28, E24

To make sure your temperature readings are as accurate as possible, replace your temperature sensor with a high quality OEM Bosch temperature sensor.

OEM replacement for BMW part # 13621709967, 13621709966, and 13621284397. Bosch coolant temperature sensor mounted in the cylinder head on models with the M42, M50 and S50 engines.

Bosch is one of the largest OEM producers of Genuine BMW and aftermarket parts in the world, providing parts for almost every major automotive manufacturer. Bosch has likely supplied many of the original electrical (and mechanical) parts for your BMW. Thanks to their quality, high durability, and reliability, you should expect a long service life from Bosch products.

As a leading source of high performance BMW parts and accessories since 1993, we at Turner Motorsport are honored to be the go-to supplier for tens of thousands of enthusiasts the world over. With over two decades of parts, service, and racing experience under our belt, we provide only quality performance and replacement parts.  All of our performance parts are those we would (and do!) install and run on our own cars, as well as replacement parts that are Genuine BMW or from OEM manufacturers. We only offer parts we know you can trust to perform!


This item fits the following BMWs:
1988-1991 E30 BMW 318i 318is 318ic M3
1992-1995 E36 BMW 318i 318is 318ti 318ic 325i 325is 325ic M3
3/1987-1988 E28 BMW 528e
1985-1988 E28 BMW535i 535is M5
1989-1995 E34 BMW 525i 535i M5
1985-1989 E24 BMW 635csi M6
1984-1987 E23 BMW 735i
1988-1992 E32 BMW 735i 735il

Bosch
Part #: 13621709967
Price: $20.15 (USD) 
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OEM Bosch Crankshaft Position Sensor - E30 E28 1986-1987

This flywheel position sensor provides the ECU with the engine speed signal. There are 2 of these sensors per car. Sold individually.

This item fits the following BMWs:
1986-1987 E30 BMW 325e 325es
1986-12/1986 E28 BMW 528e

Bosch
Part #: 12141710668
Price: $40.35 (USD) 
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OEM Bosch Flywheel Reference Sensor - E23, E24, E28, E30 M3

This is the flywheel reference sensor used on many 1980s BMW models, including E23, E24, E28, and E30 M3. There are usually 2-3 reference sensors mounted on the transmission bellhousing and this one part number is used for both sensors. BMW changed to one sensor part number that covers both of the old numbers (the only difference was the length of the cables). Even though the sensors are the same the ECU is interpreting their data differently. One is used for reading RPM and the other is for crankshaft position or cylinder identification (depending on the model). If the ECU cannot detect crankshaft position or rotation it will not trigger the ignition and start the car. Or if the signal is poor the engine could have misfires, poor running, or hard starting. So this is a vital sensor that you should not neglect! You might even want to keep a spare in your car or toolbox. Priced per sensor.

On the E30 M3 (and possibly others) the old sensors were referenced by markings on the sensor plug. Since the new BMW part number covers both sensors it might be a good idea to mark both ends yourself to help in identification later.

BMW part numbers 12141708619 and 1214708618 are now interchangable with 12141730773.

Bosch is one of the largest OEM producers of Genuine BMW and aftermarket parts in the world, providing parts for almost every major automotive manufacturer. Bosch has likely supplied many of the original electrical (and mechanical) parts for your BMW. Thanks to their quality, high durability, and reliability, you should expect a long service life from Bosch products.

As a leading source of high performance BMW parts and accessories since 1993, we at Turner Motorsport are honored to be the go-to supplier for tens of thousands of enthusiasts the world over. With over two decades of parts, service, and racing experience under our belt, we provide only quality performance and replacement parts.  All of our performance parts are those we would (and do!) install and run on our own cars, as well as replacement parts that are Genuine BMW or from OEM manufacturers. We only offer parts we know you can trust to perform!

This item fits the following BMWs:
1984-1985 E30 BMW 325e 325es
1988-1991 E30 BMW M3
1982-1985 E28 BMW 528e
1982-1988 E28 BMW 533i 535i 535is M5
1982-6/1987 E24 BMW 633csi 635csi
1988-1989 E24 BMW M6
1982-1987 E23 BMW 733i 735i

Bosch
Part #: 12141730773
Price: $56.51 (USD) 
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OEM Bosch Throttle Position Switch - E30 325e 325i, E34 525i M20

Replace a faulty throttle valve switch with this high quality OEM Bosch part. The throttle valve switch mounts onto the bottom of the throttle housing and relays the throttle position to the Motronic ECU. Bosch part number 0280120321 replaces BMW part # 13631710559.

Bosch is one of the largest OEM producers of Genuine BMW and aftermarket parts in the world, providing parts for almost every major automotive manufacturer. Bosch has likely supplied many of the original electrical (and mechanical) parts for your BMW. Thanks to their quality, high durability, and reliability, you should expect a long service life from Bosch products.

As a leading source of high performance BMW parts and accessories since 1993, we at Turner Motorsport are honored to be the go-to supplier for tens of thousands of enthusiasts the world over. With over two decades of parts, service, and racing experience under our belt, we provide only quality performance and replacement parts.  All of our performance parts are those we would (and do!) install and run on our own cars, as well as replacement parts that are Genuine BMW or from OEM manufacturers. We only offer parts we know you can trust to perform!

This item fits the following BMWs:
1984-1991 E30 BMW 325i 325ic 325is 325ix
1988 E30 BMW 325e 325es
1988 E28 BMW 528e
1989-1990 E34 BMW 525i

Bosch
Part #: 13631710559
Price: $57.52 (USD) 
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HARD Motorsport Battery Disconnect / Kill Switch Sticker Hard Motorsport Batter disconnect sticker required by many motorsports sanctioning bodies.
HARD Motorsport
Part #: HARD.BATTSTICKER
Price: $7.00 (USD) 
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Relay - Black 7-prong - Fuel Pump Relay This is the fuel pump relay for some E21, E23, E24, E28, and E30 models. The fuel pump relay gets power from the main relay and then powers on the fuel pump. If your fuel pump is not powering on (a buzzing noise is the telltale sign) then the relay may be at fault. It's easy to test with a jumper wire and test light. Note: relays look similar but can perform different functions, and electrical parts are non-returnable, so make sure you confirm this is the relay you need.

According to BMW, this part supercedes these previous BMW relay part numbers: 12621735424, 12631735424, 12631378238, 61311459577 and Bosch part number 0 332 019 456. However, see the note below when replacing a 4 or 5-prong relay)!

Note: this is a 7-prong relay that should only be used to replace a relay with similar wiring. The BMW ETK and RealOEM (and other sites) call for this relay in place of the factory 4 or 5 prong relays but that is not always the case. The 7-prong relay requires an RPM signal to energize the fuel pump and most cars that used a 4 pin relay do not have that signal so the pump will never turn on. If you are replacing a E30 4-pin relay first try the green relay #61368373700. It's more likely the better option (and cheaper).

Please remember that electrical parts are not returnable.
Kaehler
Part #: 13631276264
Price: $39.95 (USD) 
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OEM Bosch Fuel Pump Relay -- e30 e36 e46 e28 e34 e39 e24 e23 e32 e38 e31 z3

If you have a faulty fuel pump relay, fuel will not be pumped to the engine and your engine may not start. Replace your relay with this high quality Bosch replacement to restore fuel pump operation.

Bosch is one of the largest OEM producers of Genuine BMW and aftermarket parts in the world, providing parts for almost every major automotive manufacturer. Bosch has likely supplied many of the original electrical (and mechanical) parts for your BMW. Thanks to their quality, high durability, and reliability, you should expect a long service life from Bosch products.

As a leading source of high performance BMW parts and accessories since 1993, we at Turner Motorsport are honored to be the go-to supplier for tens of thousands of enthusiasts the world over. With over two decades of parts, service, and racing experience under our belt, we provide only quality performance and replacement parts.  All of our performance parts are those we would (and do!) install and run on our own cars, as well as replacement parts that are Genuine BMW or from OEM manufacturers. We only offer parts we know you can trust to perform!

This 4 prong relay fits many BMW's and fulfulls a variety of functions. Please check your relay pins configuration to ensure the proper fitment. Fits BMW 2002, e30 e36 e46 e28 e34 e39 e24 e23 e32 e38 e31 z3


This item fits the following BMWs:
1970-1976 2002 BMW 1600 2002 2002tii
1984-1991 E30 BMW 318i 318is 318ic 325e 325es 325i 325ic 325is 325ix M3
1992-1998 E36 BMW 318i 318is 318ti 318ic 323is 323ic 325i 325is 325ic 328i 328is 328ic M3
1999-2005 E46 BMW 323i 323ci 325i 325ci 325xi 328i 328ci 330i 330ci 330xi M3
1982-1988 E28 BMW 524td 528e 533i 535i 535is M5
1989-1995 E34 BMW 525i 530i 535i 540i M5
1997-2003 E39 BMW 525i 528i 530i 540i M5
1982-1989 E24 BMW 633csi 635csi M6
1981-1987 E23 BMW 733i 735i
1988-1994 E32 BMW 735i 735il 740i 740il 750il
1995-2001 E38 BMW 740i 740il 750il
1990-1999 E31 BMW 840i 840ci 850i 850ci 850csi
1997-2002 Z3 BMW Z3 1.9 Z3 2.3 Z3 2.5i Z3 2.8 Z3 3.0i M coupe M Roadster

Bosch
Part #: 61311373585
Price: $10.05 (USD) 
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Engine Coolant Temperature Sensor (Maroon Plug) - E30 318is, 325e/es 325i/is/ix This is the is the engine coolant temperature sensor that provides information to the instrument cluster temperature gauge. The insulator has a tan insulator.

This item fits the following BMWs:
1986-1991 E30 BMW 325e 325es 325i 325ic 325is 325ix M3
1991 E30 BMW 318i 318is 318ic
1986-1988 E28 BMW 528e
FAE
Part #: 12621710512
Price: $9.95 (USD) 
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Upgraded Engine Power & Ground Wire Kit - 2002 E12 E24 E28 E30

Replace your worn, frayed, and corroded ground wires with upgraded cables from CATuned to stave off electrical problems. Made in the USA, these cables utilized crimped & soldered connections for durability, and are made from #2 welding wire. Capable of delivering high current loads, they will also reduce strain and wear on your starter and alternator. This 2 pc. kit includes a replacement "starter to alternator" power cable and 10-inch "engine to chassis" ground cable.

 

CATuned
Part #: 2KIT10
Price: $45.00 (USD) 
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Camshaft Position Sensor - Priced Each

This flywheel position sensor provides the ECU with the engine speed signal. There are 2 of these sensors per car. Sold individually.
When doing any sort of repair or maintenance there is no replacement for genuine factory parts. Turner Motorsport carries the Genuine BMW brand with pride and has the parts you need to complete your next project with confidence.

This item fits the following BMWs:
1986-1987 E30 BMW 325e 325es
1986-12/1986 E28 BMW 528e

Genuine BMW
Part #: 12141730773
Price: $162.49 (USD) 
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Relay - White Green - Most BMWs 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. The following are alternate part numbers for this item. 12631735424, 61368366600, 12631714976, 61311350315, 61311378297, 61361378238, 61360153636.
When doing any sort of repair or maintenance there is no replacement for genuine factory parts. Turner Motorsport carries the Genuine BMW brand with pride and has the parts you need to complete your next project with confidence.

When doing any sort of repair or maintenance there is no replacement for genuine factory parts. Turner Motorsport carries the Genuine BMW brand with pride and has the parts you need to complete your next project with confidence.

This item fits the following BMWs:
2008+ E82 BMW 128i 135i 1M Coupe
1984-1991 E30 BMW 318i 318is 318ic 325e 325es 325i 325ic 325is 325ix M3
1992-1998 E36 BMW 318i 318is 318ti 318ic 323is 323ic 325i 325is 325ic 328i 328is 328ic M3
1999-2005 E46 BMW 323i 323ci 325i 325ci 325xi 328i 328ci 330i 330ci 330xi M3
2006-2012 E90 BMW 325i 325xi 328i 328xi 328i xDrive 330i 330xi 335d 335i 335xi 335i xDrive M3 - Sedan
2006-2012 E91 BMW 325xi 328i 328xi 328i xDrive - Wagon
2007-2013 E92 BMW 328i 328xi 328i xDrive 335i 335is 335xi 335i xDrive M3 - Coupe
2007-2013 E93 BMW 328i 335i M3 - Convertible
1989-1995 E34 BMW 525i 530i 535i 540i M5
1997-2003 E39 BMW 525i 528i 530i 540i M5
2004-2010 E60 BMW 525i 525xi 530i 530xi 528i 528xi 528i xDrive 535i 535xi 535i xDrive 545i 550i M5
2004-2011 E63 BMW 645ci 650i M6
1988-1994 E32 BMW 735i 735il 740i 740il 750il
1995-2001 E38 BMW 740i 740il 750il
2002-2008 E65 BMW 745i 745li 750i 750li 760i 760li
1990-1999 E31 BMW 840i 840ci 850i 850ci 850csi
2004-2010 E83 BMW X3 2.5i X3 3.0i X3 3.0si
2000-2006 E53 BMW X5 3.0i X5 4.4i X5 4.6is X5 4.8is
2007-2013 E70 BMW X5 3.0si X5 4.8i X5 xDrive30i X5 xDrive35d X5 xDrive35i X5 xDrive48i X5M
2008+ E71 BMW X6 xDrive35i X6 xDrive50i X6M
1997-2002 Z3 BMW Z3 1.9 Z3 2.3 Z3 2.5i Z3 2.8 Z3 3.0i M Roadster M Coupe
2003-2008 E85 BMW Z4 2.5i Z4 3.0i Z4 3.0si Z4 M Roadster M Coupe
Genuine BMW
Part #: 61368373700
Price: $16.03 (USD) 
$18.84 (Sale - Save 5%)
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Genuine BMW Adapter Voice Recogn. - 84110018038

When doing any sort of repair or maintenance there is no replacement for genuine factory parts. Turner Motorsport carries the Genuine BMW brand with pride and has the parts you need to complete your next project with confidence.


Genuine BMW Adapter - Voice Recogn.
 

 

Genuine BMW
Part #: 84110018038
Price: $9.50 (USD) 
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OEM Bosch Flywheel Reference Sensor (Cyl ID, CPS, RPM) - E23, E24, E28, E30 M3

This is the flywheel reference sensor used on many 1980s BMW models, including E23, E24, E28, and E30 M3. There are usually 2-3 reference sensors mounted on the transmission bellhousing and this one part number is used for both sensors. BMW changed to one sensor part number that covers both of the old numbers (the only difference was the length of the cables). Even though the sensors are the same the ECU is interpreting their data differently. One is used for reading RPM and the other is for crankshaft position or cylinder identification (depending on the model). If the ECU cannot detect crankshaft position or rotation it will not trigger the ignition and start the car. Or if the signal is poor the engine could have misfires and poor running. So this is a vital sensor that you should not neglect! You might even want to keep a spare in your car or toolbox.

On the E30 M3 (and possibly others) the old sensors were referenced by markings on the sensor plug. Since the new BMW part number covers both sensors it might be a good idea to mark both ends yourself to help in identification later.

Bosch is one of the largest OEM producers of Genuine BMW and aftermarket parts in the world, providing parts for almost every major automotive manufacturer. Bosch has likely supplied many of the original electrical (and mechanical) parts for your BMW. Thanks to their quality, high durability, and reliability, you should expect a long service life from Bosch products.

As a leading source of high performance BMW parts and accessories since 1993, we at Turner Motorsport are honored to be the go-to supplier for tens of thousands of enthusiasts the world over. With over two decades of parts, service, and racing experience under our belt, we provide only quality performance and replacement parts.  All of our performance parts are those we would (and do!) install and run on our own cars, as well as replacement parts that are Genuine BMW or from OEM manufacturers. We only offer parts we know you can trust to perform!

BMW part numbers 12141708619 and 1214708618 are now interchangable with 12141730773.

This item fits the following BMWs:
1988-1991 E30 BMW M3
1982-1988 E28 BMW 533i 535i 535is
1982-6/1987 E24 BMW 633csi 635csi
1988-1989 E24 BMW M6
1982-1987 E23 BMW 733i 735i

Bosch
Part #: 12141708619
Price: $61.09 (USD) 
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Upgraded Engine Ground Wire - 2002 E12 E24 E28 E30 Replace your worn, frayed, and corroded ground wires with upgraded cables from CATuned to stave off electrical problems. Made in the USA, these cables utilized crimped & soldered connections for durability, and are made from #2 welding wire. Capable of delivering high current loads, they will also reduce strain and wear on your starter and alternator.
CATuned
Part #: 2GND10
Price: $20.00 (USD) 
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OMP Battery Cut Off Switch / Kill Switch OMP Battery Cut Off Switch / Kill Switch, for use in racecars as an emergency "kill switch", to depower the electrical system in the event of a crash or other emergency. This cut off switch is FIA approved, has 6 poles and alternator protection, as well as a removable key.
OMP
Part #: EA-462
Price: $69.95 (USD) 
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Engine Coolant Temperature Sensor (Blue or White Plug) - E30 E28 E24 E23 This is a Bosch coolant temperature sensor (#0280130026) for the fuel injection system. It has a white tip and is rated at 20 degree Celsius & 2500 Ohm.

This item fits the following BMWs:
1984-1985 E30 BMW 318i
1984-1991 E30 BMW 325e 325es 325i 325ic 325is 325ix
1976-1981 E12 BMW 528i 530i
1982-3/1987 E28 BMW 528e 533i
1980-1984 E24 BMW 633csi
1980-1984 E23 BMW 733i
FAE
Part #: 13621357414
Price: $9.95 (USD) 
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Relay switch - E21 E28 Genuine BMW SWITCH BLOWER.--

When doing any sort of repair or maintenance there is no replacement for genuine factory parts. Turner Motorsport carries the Genuine BMW brand with pride and has the parts you need to complete your next project with confidence.

This item fits the following BMWs:
BMW 3 Series - 320/6

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Genuine BMW
Part #: 61311377251
Price: $29.18 (USD) 
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