Current BMW:

(E90) 3-Series Sedan 2006 on Clear BMW chassis

BMW E90 Electrical (Sensors, Switches, Relays)

This category includes BMW electric sensors senders swiches and relays. These items include BMW camshaft sensors BMW crankshaft sensors, relays and other engine related electrical items.

Available for the following BMWs: (click icon to change BMW)

Crank Sensor Adaptor - S54 Sensor into N52 Engine (more info)
Made in the USA

Allows the use of a factory S54 crank reference sensor on an N52 based engine. We use this sensor when running non-factory engine management (such as Bosch or MoTeC) on our E90 racecars. This is designed specifically for our E90 328i Grand Am Cup legal racecar with Bosch Motorsport engine management.

The N52 engine crank sensor is a Hall effect type sensor and the S54 engine crank sensor is an inductive (Mag) type sensor. The advantages to using an inductive type sensor are:

Inductive sensor has no active electronics and thus does not require a power supply to operate, making the sensor more reliable.
Will hold up to higher operating temperatures better than a Hall effect type sensor, making the sensor more reliable.
Will withstand higher vibration levels then a Hall effect type sensor, making the sensor more reliable.
There are still a lot of aftermarket ECU’s that cannot operate a Hall effect type sensor, making the use of a Inductive sensor mandatory.
A plus to running the S54 crank sensor (BMW P/N 12 14 7 830 789) is that it has been around for a long time and most aftermarket ECU manufacturers will all ready know the correct operating parameters for the sensor, saving you time and frustration.

Part #: TEN9088001

Price: $39.95 (USD)

Crankshaft Position Sensor - E9X M3 E39 540i M5 E60 M5 E63 M6 E38 740i (more info)
This crank shaft position sensor provides the ECU with the engine speed signal. It is mounted in the bell housing of the transmission on most cars. This sensor fits BMW E90 E92 E93 M3, E39 540i M5, E60 M5, E63 M6, E38 740i 740il 750il 1997-2001, E31 840ci 850ci, E52 Z8.

This item fits the following BMWs:
2008+ E9X BMW M3
1997-2003 E39 BMW 540i M5
2006-2010 E60 BMW M5
2006+ E63 BMW M6
1997-2001 E38 BMW 740i 740il 750il
1997-1998 E31 BMW 840ci 850ci
2000-2003 E52 BMW Z8

Part #: 13627839138 (13-62-7-839-138)

Price: $77.95 (USD)

Oil Pressure Switch (fits most BMWs) (more info)
Having your oil pressure light come on can mean very serious problems. Or it could just be this switch that fails several times over a car's lifespan. By no means should you ignore the warning light but replacing this sensor could be the actual culprit. The other problem with this switch is that oil can leak past its seal. With the oil under a lot of pressure at this point, the oil loss can be a serious concern. It's a simple replacement when doing most oil change work.

This Oil Pressure Switch fits the following BMWs:
1985-1991 E30 318i, 318is, 325e, 325i, M3
1992-1999 E36 318i/is, 325i/is, 328i/is, 323is, M3
1992-1997 E31 840i, 850i
1988-1994 E32 735i, 735iL, 740i, 740iL
1989-1995 E34 525i, 530i, 535i, 540i, M5
1995-2001 E38 740i, 740iL, 750i, 750iL
1996-2002 Z3 Roadster/Coupe 1.9, 2.3, 2.5, 2.8, 3.0, 3.2
1997-2003 E39 525i, 528i, 530i, 540i, M5
1999-2005 E46 323, 325, 328, 330, M3
2000-2003 Z8 roadster
2001-2006 E53 X5 X5 3.0i, X5 4.4i, X5 4.6is, X5 4.8is
2002+ E65/E66 745i, 745li, 750i, 750li, 760i, B7 Alpina
2003+ Z4 Roadster/Coupe Z4 2.5, 3.0, 3.0si
2004+ E60 525i, 530i, 535i, 545i, 550i, M5
2005+ E63/E64 645Ci, 650i, M6
2005+ E83 X3 X3 2.5, X3 3.0
2006+ E90/E92 325, 328, 330, 335
2007+ E70 X5 X5 3.0i, X5 4.8i

Part #: 12617568480 (12-61-7-568-480)

Price: $10.95 (USD)

Relay - 5 prong - Salmon Colored (more info)
This relay is used for the SMG system on the E46 M3 and various applications including secondary air systems on other BMW's. If you find that your SMG-equipped E46 M3 is not starting, this is one of the first places to check as it controls power to the hydraulic unit (the car will not start without hydraulics). Buy one to fix the issue and buy a second so you're not stranded in the future!! You may also want to pick up the green fuel system relay as a spare too (see below).

This item fits the following BMWs:
1996-1998 E36 BMW 318i 318is 318ti 318ic 323is 323ic 328i 328is 328ic M3
1999-2005 E46 BMW 323i 323ci 325i 325ci 325xi 328i 328ci 330i 330ci 330xi M3
2006-3/2007 E90 BMW 325i 325xi 328i 328xi 330i 330xi 335i 335xi M3 - Sedan
2007-3/2007 E92 BMW 328i 328xi 328i xDrive 335i 335is 335xi 335i xDrive M3 - Coupe
2007-3/2007 E93 BMW 328i 335i M3 - Convertible
1997-2003 E39 BMW 528i 540i M5
2004-2007 E60 BMW 525i 525xi 530i 530xi 545i 550i M5
2004-2011 E63 BMW 645ci 650i M6
1995-2001 E38 BMW 740i 740il 750il
2002-2008 E65 BMW 745i 745li 750i 750li 760i 760li
2000-2006 E53 BMW X5 3.0i X5 4.4i X5 4.6is X5 4.8is
1997-2002 Z3 BMW Z3 1.9 Z3 2.3 Z3 2.5i Z3 2.8 Z3 3.0i M Roadster M Coupe
2006-2008 Z4 BMW Z4 M Roadster M Coupe

Part #: 12631742690 (12-63-1-742-690)

Price: $11.95 (USD)

Sparco/OMP Battery Cut Off Switch / Kill Switch (more info)
Sparco/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.

Part #: EA-462

Price: $62.00 (USD)