BMW Electrical Sensors, Switches, & Relays for BMW 3 Series E30 (1984-1991)

Bosch Starter Motor - E30 325e 325i 325is 325ix E34 525i

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T#:2275

Part#: SR443X

Ships in 2 Business Days

$ 230.99 USD

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$ 230.99 USD

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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 exacting assembly process and high level of durability you can expect a long service life from all Bosch products.

This genuine Bosch Starter motor fits the following BMWs:
1987-1991 E30 3 Series 325i 325is 325ix 325ic
1989-1987-1988 E30 3 Series 325e 325es 12/1986-1988
1989-1990 E34 5 Series 525i M20 engine only
1987-1988 E28 5 Series 528e 12/1986-1988

Includes $45 core charge to be refunded on return of your rebuildable core.

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OMP Battery Cut Off Switch / Kill Switch

T#:1614

Part#: EA-462

In Stock

$ 65.00 USD

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$ 65.00 USD

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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.

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Hella Crankshaft Position Sensor - E28, E30, E34

T#:591862

Part#: 12141720852

In Stock at Vendor

$ 118.99

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

$ 114.99 USD

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$ 114.99 USD

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

Bosch Starter Motor - E30 325e 325es E28 528e E21 323i

2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!

T#:2278

Part#: SR43X

In Stock at Vendor

$ 324.99

This product was last offered at the strikethrough price on
02-14-2026

$ 252.99 USD

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$ 252.99 USD

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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 exacting assembly process and high level of durability you can expect a long service life from all Bosch products.

This genuine Bosch Starter fits the following BMWs:
1984-1985 E30 3 Series 323i 325e 325es
1982-12/1986 E28 5 Series 528e
1977-1983E21 3 Series 320/6 323i

Includes $45.00 core charge to be refunded on return of your rebuildable core.

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OEM Bosch Remanufactured Starter - E30 E34 E46 E39 Z3

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T#:373255

Part#: 12417578684KT

Ships in 5 Business Days

$ 307.99

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

$ 300.99 USD

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$ 300.99 USD

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Includes a $71.50 core charge to be refunded after we receive your refundable core If your car won't turn over, there is a good chance your starter is shot. Bosch's OEM starter is a high-quality replacement that will give you peace of mind thanks to its long life-span. 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!

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Bosch Starter Motor for E36 E46 Z3 6 Cylinder (SR0448X)

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T#:338004

Part#: 12411712937

Ships on Aug 14, 2026

$ 283.99

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

Starting at $ 277.00 USD

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Starting at $ 277.00 USD

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E36/E46/M50/M52/M54 STARTER - THIS ONE IS THE "LATER" STYLE THAT DOES NOT REQUIRE NUTS. A refundable core charge will be added to your sale, refunded to you when we get your old starter back. Replaces Bosch part number SR0445X.

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 exacting assembly process and high level of durability you can expect a long service life from all Bosch products.

This item fits the following BMWs:
1990-1991 E30 BMW 318i 318is 318ic
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
1991-1995 E34 BMW 525i
1997-2003 E39 BMW 525i 528i 530i
2004-2005 E60 BMW 525i 530i
2004-2005 E83 BMW X3 2.5i X3 3.0i
1996-2002 Z3 BMW Z3 1.9 Z3 2.3 Z3 2.5i Z3 2.8 Z3 3.0i
1998-2000 Z3 BMW M Roadster M Coupe
2003-2005 E85 BMW Z4 2.5i Z4 3.0i

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

T#:338003

Part#: 12141720852

Ships on Oct 16, 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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Crankshaft Position Sensor

2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!

T#:594976

Part#: 12141721504

Back Ordered

$ 88.34 USD

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$ 88.34 USD

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

T#:401689

Part#: OILTEMPGAUGEBRKK

Ships on Nov 30, 2026

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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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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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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Oil Temperature Sensor And Gauge Kit - Green & White - Multiple BMWs ...

T#:401690

Part#: OILTEMPGAUGEKT1

Ships on Nov 30, 2026

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

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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Re-manufactured Starter Motor - Priced Each

2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!

T#:3471789

Part#: 124123547095KT

Back Ordered

$ 346.99

This product was last offered at the strikethrough price on
04-09-2026

$ 339.99 USD

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$ 339.99 USD

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Price Included a $40.00 Core Charge

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BMW Electrical Sensors, Switches, & Relays for BMW 3 Series E30 (1984-1991)

Sub-Categories

Bosch Starter Motor - E30 325e 325i 325is 325ix E34 525i

OMP Battery Cut Off Switch / Kill Switch

Hella Crankshaft Position Sensor - E28, E30, E34

Bosch Starter Motor - E30 325e 325es E28 528e E21 323i

OEM Bosch Remanufactured Starter - E30 E34 E46 E39 Z3

Bosch Starter Motor for E36 E46 Z3 6 Cylinder (SR0448X)

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

Crankshaft Position Sensor

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

Oil Temperature Sensor And Gauge Kit - Green & White - Multiple BMWs ...

Re-manufactured Starter Motor - Priced Each

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