Bosch BMW Electrical Sensors, Switches, & Relays for BMW 8 Series E31 (1991-1997)

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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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OEM Bosch BMW Knock Sensor - M62 E39 E38 E31
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Bosch - Corporate Logo
T#:397564
Part#: 12141741648
In Stock
$ 64.99 USD
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$ 64.99 USD
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Knock sensors detect pings in the engine and adjust ignition timing to restore perfect operation. Faulty knock sensors will throw engine codes or even lead to engine damage. Replace your sensor with a reliable, high quality Bosch sensor to ensure proper engine ignition timing.

Bosch # 12141741648 OEM replacement for BMW part # 12141741648.

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 s  eupplied 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!

Fits the following vehicles:
1996-09/1999 E39 BMW 540i
1995-09/1999 E38 BMW 740i 740iL
1990-1999 E31 BMW 840Ci

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Bosch Knock Sensor - E31, E32, E34, E38
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Bosch - Corporate Logo
T#:579188
Part#: 261231074
In Stock at Vendor
$ 111.99

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

$ 108.00 USD
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$ 108.00 USD
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Controls the timing and air/fuel mixture of your engine
Bosch Alternator - 1993-1995 V8 - E34 530i/540i & E32 740i/740il ...
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Bosch - Corporate Logo
T#:1976
Part#: AL0742X
In Stock at Vendor
$ 475.99

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

$ 464.99 USD
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$ 464.99 USD
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Replacement Bosch alternator for the 1993-1995 V8 engine (M60), found in the E34 530i & 540i, and E32 740i/740iL (thru 1994). Bosch is an original equipment supplier to BMW, and is the finest and most recognized German brand of alternator available. Buy only the best alternator for your BMW -- buy a Bosch alternator.

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.

A refundable core charge must be applied to this alternator. Upon receipt of your rebuildable alternator core, you will be refunded the core charge.

This Bosch Alternator fits the following BMWs:
1994-1995 E34 5 Series V8 530i & 540i
1992-1995 E32 7 Series V8 740i & 740iL
1994-1995 E31 8 Series V8 840C/ 840i

Includes $65.00 core charge to be refunded on return of your rebuildable core.

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Bosch Alternator - 120 Amp - E31 E38 E39
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Bosch - Corporate Logo
T#:186964
Part#: AL0733X
In Stock
$ 496.99

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

$ 319.99 USD
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$ 319.99 USD
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120 amp Bosch alternator for many BMW M62 V8's with 7 Poly Groove Pulley. Bosch is an original equipment supplier to BMW, and is the finest and most recognized German brand of alternator available. Buy only the best alternator for your BMW -- buy a Bosch alternator. Can be used in place of bmw part number. 12311433266

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.

A refundable core charge must be applied to this alternator. Upon receipt of your rebuildable alternator core, you will be refunded the core charge.

This Bosch Alternator fits the following BMWs:
1997-1998 E39 5 Series 540i
1997-1998 E38 BMW 740i 740il
1996-1999 E31 BMW 840i 840ci

Includes $65.00 core charge to be refunded on return of your rebuildable core.

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Bosch Starter Motor - E39 E38 E32 E34 X5 E53
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Bosch - Corporate Logo
T#:2024
Part#: SR0446X
Ships on Jul 29, 2026
$ 461.99 USD
Free Shipping
$ 461.99 USD
Free Shipping

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:
1992-1994 E32 7 Series 740i, 740il
1993-1995 E34 5 Series 530i, 530i wagon, 540i
1995-2001 E38 7 Series 740i, 740il
1997-2003 E39 5 Series 540i M5
2000-2003 E53 X5 X5 4.4i X5 4.6is - M62 engine
2000-2003 Z8 Z8

 

Includes $100.00 core charge to be refunded on return of your rebuildable core.

 

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Bosch Knock Sensor - E31, E32, E34, E38
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
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Bosch - Corporate Logo
T#:13073
Part#: 12141702163
In Stock at Vendor
$ 78.99

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

$ 76.99 USD
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$ 76.99 USD
Free Shipping
Bosch BMW PING SENSOR:121060