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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Genuine BMW Pulse Generator/Crankshaft Position Sensor - 12141726065 ...
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Genuine BMW - Corporate Logo
T#:185064
Part#: 12141726065
Ships in 1 day
4% off MSRP $ 249.99

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$ 238.99 USD
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4% off MSRP
$ 249.99

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

$ 238.99 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.

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

Fits BMW Engines including:
M50,S50

 

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Main / ECU Relay - White - E30 E36 E39 E38 X5
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Genuine BMW - Corporate Logo
T#:10642
Part#: 61361729004
In Stock
4% off MSRP $ 25.01

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

$ 23.99 USD
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4% off MSRP
$ 25.01

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

$ 23.99 USD
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This is a Genuine BMW main relay for a variety of BMW models. The main relay powers vital systems in the car when the key is turned to the Start position. Things like the ECU and fuel pump require power from the main relay before they can work. The main relay is constantly powered so checking for power is easy with a test light. It should also make a 'click' sound when the ignition switch is turned. 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.
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.
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Genuine BMW 5 Prong Salmon Relay - Multiple BMWs
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Genuine BMW - Corporate Logo
T#:5390
Part#: 12631742690
In Stock
7% off MSRP $ 24.65

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$ 22.99 USD
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7% off MSRP
$ 24.65

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

$ 22.99 USD
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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!
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Genuine BMW White Green Relay - Multiple BMWs
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Genuine BMW - Corporate Logo
T#:11798
Part#: 61368373700
In Stock
4% off MSRP $ 24.65

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

$ 23.59 USD
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4% off MSRP
$ 24.65

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

$ 23.59 USD
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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.

New Alternator - 140amp | BMW E36 E34 M50 M52 S50 S52
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Bavarian Autosport - Corporate Logo
T#:25042544
Part#: 12311744567
In Stock
Sale - Save 15% $ 219.99

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

$ 186.99 USD
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Sale - Save 15%
$ 219.99

This product was last offered at the strikethrough price on
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$ 186.99 USD
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Crankshaft Position Sensor - E36 (OBDI), E34 M50/S50
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Bavarian Autosport - Corporate Logo
T#:579816
Part#: 52380
In Stock
Sale - Save 20% $ 48.99

This product was last offered at the strikethrough price on
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$ 39.19 USD
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Sale - Save 20%
$ 48.99

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$ 39.19 USD
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Common cause of misfires, poor fuel economy, or a crank no start situation. If your M50 or S50 has any of these symptoms, this crankshaft position sensor from Bavarian Autosport is a likely fix.

ECS Heavy Duty Ground Cable Upgrade (12421737755) - E30, E36, E39, E4...
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ECS - Corporate Logo
T#:49996974
Part#: 059235LA01
Ships in 4 Business Days
New Item
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This product was last offered at the strikethrough price on
02-04-2026

$ 23.19 USD
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$ 29.99

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If you're experiencing hard starting, flaky charging, or other electrical issues, your engine ground strap may be the culprit. On older BMWs, the engine ground strap is a thin, non-insulated cable that spans from the engine mount arm to the frame horn. Despite the seemingly simple nature of this part, on older cars, it is known to cause massive headaches. Due to its non-insulated design, years of exposure to water, dirt, and road salt will cause the wire to corrode, ultimately leading to complete failure. A break in this cable will cause an open circuit, resulting in issues with the vehicle's electrical system and potentially leading to a no-start condition.

To solve this issue, ECS has engineered an exact-fit, upgraded ground strap for your BMW! Unlike its OEM counterpart, this design features insulated, large-gauge copper wire for dependable conductivity and long-lasting durability. Additionally, factory-style lugs are zinc-coated, crimped, and soldered, ensuring protection against corrosion and oxidation.

Whether you're replacing a visibly corroded strap or proactively preventing failure, this solution from ECS is sure to provide lasting performance and protection.

FEATURES

Direct-fit replacement and upgrade for E30 (318i/is), E36, E39, E46, and others Solves intermittent grounding issues caused by aging OEM straps Clean, stealthy design that fits seamlessly in factory engine bays Factory length and lug orientation for drop-in fitment 2 AWG tinned copper cable for excellent conductivity and corrosion resistance Zinc-coated lugs, crimped and soldered to resist moisture and oxidation Black UL1015-grade insulation withstands oil, heat, and abrasion Discreet ECS label for a clean, OEM+ look Replaces OEM part numbers 12421737755 and 12421714262.

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Braille Performance Lightweight AGM Battery - B14115 - 11.5lbs ...
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Braille - Corporate Logo
T#:558037
Part#: B14115
Ships in 5 Business Days
$ 204.99 USD
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When building a car for the track, one of the most important factors to consider is weight. Stock batteries can weigh up to almost 50 pounds and are unnecessarily large, designed to power a host of systems not normally used in a track car (radios, lighting, etc.). What can you do to cut weight the weight without affecting your cars operation? This is where Braille Battery comes in with their long line of performance lightweight battery options! Designed to provide the highest cranking power possible while being up to 75% lighter, Braille Battery is one of the foremost leaders in automotive racing batteries with nothing but high quality, high output batteries in mind!
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Genuine BMW Oil Pressure Switch - M12x1.5
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Genuine BMW - Corporate Logo
T#:183226
Part#: 12618611273
In Stock
17% off MSRP $ 34.59

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

$ 28.79 USD
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17% off MSRP
$ 34.59

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

$ 28.79 USD
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Genuine BMW Oil Pressure Switch - M12X1,5
This item fits the following BMW Chassis:
E39 M5,E46 M3,E82 1M Coupe,E85 Z4M,E53 48IS,E36,E38,E39,E46,E53 X5,E63,E65,E70 X5,E71 X6,E82,E83 X3,E85 Z4,E86 Z4,E89 Z4,E90,E92,E93,F01,F02,F06,F10,F12,F13,F15,F16,F25 X3,F30,F31,i3

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Braille Performance Lightweight Advanced AGM Battery - B2015 - 15lbs ...
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Braille - Corporate Logo
T#:558038
Part#: B2015
Ships in 8 Business Days
$ 237.99 USD
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When building a car for the track, one of the most important factors to consider is weight. Stock batteries can weigh up to almost 50 pounds and are unnecessarily large, designed to power a host of systems not normally used in a track car (radios, lighting, etc.). What can you do to cut weight the weight without affecting your cars operation? This is where Braille Battery comes in with their long line of performance lightweight battery options! Designed to provide the highest cranking power possible while being up to 75% lighter, Braille Battery is one of the foremost leaders in automotive racing batteries with nothing but high quality, high output batteries in mind! The B2015 is Braille's most popular non-carbon racing battery and is able to start larger engines easily for racing and offers daily driving capability for most 4 and 6 cylinders engine vehicles. Physical Specifications: BCI Group: All sizes Weight: 15lbs / 6.8kg Length: 6.8" / 173mm Width: 3.4" / 86mm Height: 6.1" / 155mm Polarity: Right Side Positive Performance Specifications: Voltage: 12 Full Charge Voltage: 13.2 Pulse Cranking Amps (PCA): 1067 Amp Hour (AH): 21 Life Cycle @ 10% DOD: 3100 *THIS BATTERY REQUIRES A CUSTOM MOUNTING SOLUTION. The size and weight are significantly smaller than a stock battery and will not be held in place by the stock battery mount*
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Bosch Starter Motor - E30 325e 325i 325is 325ix E34 525i
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Bosch - Corporate Logo
T#:2275
Part#: SR443X
In Stock
$ 228.99 USD
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$ 228.99 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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Schwaben Automatic Battery Tender
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Schwaben - Corporate Logo
T#:378277
Part#: 005979SCH01A
In Stock
Sale - Save 30% $ 100.99

This product was last offered at the strikethrough price on
05-02-2026

$ 70.69 USD
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$ 100.99

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This Schwaben Battery Charger is designed to work on 6 or 12 volt Lead-acid batteries only, includes WET, MF,AGM and GEL types. Do not use on dry cell batteries commonly used in appliances. Charger features, Charging voltage auto select. Selectable Charging current,8 LED indicators, No risk of overcharging, overheating protection, Short circuit protection.
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Bosch Air Temperature Sensor - E31, E32, E34, E36, E38
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Bosch - Corporate Logo
T#:555413
Part#: 13621725323
In Stock
$ 44.99

This product was last offered at the strikethrough price on
03-09-2026

$ 34.33 USD
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$ 34.33 USD
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Located on the intake manifold or intake box
OEM Hella Crankshaft Position Sensor - E36 325i 325is 325ic M3 1992-1...
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Hella - Corporate Logo
T#:2082
Part#: 12141726066
In Stock
$ 117.99

This product was last offered at the strikethrough price on
01-05-2026

$ 96.99 USD
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$ 96.99 USD
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This crank shaft position sensor provides the ECU with the engine speed signal. A faulty sensor could cause reduced performance, ignition issue, or even damage directly to internal components of your engine. An OEM Hella replacement ensures long life and is the best option to get your engine running smoothly again. It fits BMW E36 325i 325is 325ic M3 1992-1995 and E34 525i 1991-1995 with M50 engine.

Hella is a premium manufacturer that supplies automotive parts to numerous car brands across the world. Everything from electrical to mechanical genuine parts have been made and supplied directly to BMW before the vehicles ever leave the production floor. Their high quality, long lasting parts have made them a trusted brand chosen to help keep your BMW on the road for many years to come.

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:
1992-1995 E36 BMW 325i 325is 325ic M3
1991-1995 E34 BMW 525i

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Genuine BMW Ground Cable
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Genuine BMW - Corporate Logo
T#:39357
Part#: 12421737755
In Stock
5% off MSRP $ 42.99

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

$ 40.99 USD
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5% off MSRP
$ 42.99

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

$ 40.99 USD
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Genuine BMW Ground Cable - L=380Mm
This item fits the following BMW Chassis:
E36 M3,E46 M3,E85 Z4M,E30,E34,E36,E38,E39,E46,E85 Z4,E86 Z4


Facet Engine Crankshaft Position Sensor - E24, E32, E34
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Facet - Corporate Logo
T#:1195883
Part#: 12141720857
In Stock
$ 77.99

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

$ 64.99 USD
Limited Qty Sale
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$ 77.99

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

$ 64.99 USD
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Measures the speed and position of your engine's crankshaft.

Braille Lightweight Advanced AGM Battery - B3121 - 21lbs
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Braille - Corporate Logo
T#:558042
Part#: B3121
Ships in 5 Business Days
$ 270.99 USD
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When building a car for the track, one of the most important factors to consider is weight. Stock batteries can weigh up to almost 50 pounds and are unnecessarily large, designed to power a host of systems not normally used in a track car (radios, lighting, etc.). What can you do to cut weight the weight without affecting your car's operation? This is where Braille Battery comes in with their long line of performance lightweight battery options! Designed to provide the highest cranking power possible while being up to 75% lighter, Braille Battery is one of the foremost leaders in automotive racing batteries with nothing but high quality, high output batteries in mind! The B3121 battery from Braille is their lightest do-everything battery available, offering 1380 pulse cranking amps that can crank over V8 engines with ease while still coming in at under 22 pounds, half of the weight of a standard Group 34 battery! This is thanks to their Advanced AGM racing technology that allows them to put a ton of power into a very small package. Physical Specifications: BCI Group: All sizes Weight: 21lbs / 9.5kg Length: 6.6" / 168mm Width: 5.2" / 132mm Height: 6.8" / 173mm Polarity: Right Side Positive Terminal Type: Steel terminal block with M6 bolt Performance Specifications: Voltage: 12v Recharge Voltage: 14.4V – 14.6V Maintenance charge voltage: 13.8V 5s Pulse Cranking Amps (PCA): 1380 10s PDC: 124 Amp Hour (Ah): 31 Watt Hour (Wh): 372 Life Cycle @ 10% DOD: 3100 Charging Temperature 0C to 50C Discharge Temperature range -40C to +60C Storage temperature -40C to +60C *THIS BATTERY REQUIRES A CUSTOM MOUNTING SOLUTION. The size and weight are significantly smaller than a stock battery and will not be held in place by the stock battery mount*
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100 Piece Mini Car Fuse Assortment
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ATD Tools - Corporate Logo
T#:383674
Part#: ATD382
Ships in 6 Business Days
$ 31.99 USD
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You never know when you will blow a fuse so it always good to have extra

OEM Bosch Voltage Regulator (Bosch Alternator) - 12311726022 ...
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Bosch - Corporate Logo
T#:19326
Part#: 12311726022
In Stock at Vendor
$ 71.99

This product was last offered at the strikethrough price on
01-28-2026

$ 63.99 USD
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$ 63.99 USD
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This is the voltage regulator found on the back of the alternator. It's a normal wear item and the contacts are the first thing to check if you believe the alternator is not charging the battery (lights flickering or dim, battery light on in the dash, the engine quits without warning, or other electrical failures). The voltage regulator manages the voltage flowing through the car, especially to and from the battery. There are two carbon contacts on the regulator that control the magnetic field when the alternator is spinning and these contacts wear over time. A new set of contacts will be about 13mm in length. Anything less than 5mm and the voltage regulator should be replaced, regardless if that is the cause of your electrical problems or not. Most older mechanics will tell you to keep a spare regulator in your toolbox.

The carbon contacts can be replaced on their own but requires desoldering the old ones from the base and then soldering the new ones on. It may be easier to just replace the unit as a whole.

This is the OEM voltage regulator, made by Bosch or Hella. It's the one with the white base and fits most Bosch alternators from 1977-1995 (Valeo and other alternators look very different and have a black cover and base). This part number replaces the previous BMW part numbers - 12311271664, 12321279548, 12311722755, 12321711399 and Bosch part numbers 1197311021 and 1197311028.
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Innovate LC-2 Wideband O2 Controller Kit
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Innovate Motorsports - Corporate Logo
T#:28836410
Part#: 38770
In Stock
$ 212.99 USD
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Features & Benefits:

Two configurable linear 0-5V analog outputs Ability to calibrate O2 sensors for maximum accuracy Includes LC-2 controller and Bosch wideband O2 sensor Comes with a program cable, manual, and a 10 ft. sensor cable Includes a 1-inch mild steel exhaust bung Innovate MTS serial in/out capability Integrated dual-color status LED (green/red) Patented DirectDigital™ wideband sensor control Positive lock connectors for all connections Real-time display data on screen or with the powerful LogWorks software Range:

AFR (Air-Fuel Ratio) range from 7.4:1 to 22.4:1 (0.5 to 1.5 lambda)

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Genuine BMW Alternator Pulley - 66mm - M20 2.5L
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Genuine BMW - Corporate Logo
T#:19315
Part#: 12311288238
Ships in 1 day
5% off MSRP $ 109.99

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

$ 103.99 USD
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5% off MSRP
$ 109.99

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

$ 103.99 USD
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Genuine BMW Pulley - D=66mm

This item fits the following BMW Chassis:
E30 M3,E30,E34

Fits BMW Engines including:
M10,M20,S14


Genuine BMW Crankshaft position sensor - 528e, E30 M20 2.7L, E34 M20 ...
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Genuine BMW - Corporate Logo
T#:185063
Part#: 12141720856
Ships in 1 day
8% off MSRP $ 217.99

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

$ 199.99 USD
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8% off MSRP
$ 217.99

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

$ 199.99 USD
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This item has been superseded to 12141720852
Genuine BMW Relay In Zinc Yellow - 61361389105 - E34,E36,E46,E83 ...
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Genuine BMW - Corporate Logo
T#:10639
Part#: 61361389105
In Stock
4% off MSRP $ 22.99

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

$ 21.99 USD
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4% off MSRP
$ 22.99

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

$ 21.99 USD
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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 Relay In Zinc Yellow
This item fits the following BMW Chassis:
E36 M3,E34 M5,E46 M3,E34,E36,E46,E83 X3
 

 

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Facet Crankshaft Position Sensor - E28, E30, E34
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Facet - Corporate Logo
T#:554187
Part#: 12141720856
Ships in 1 Business Day
$ 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


Camshaft Position Sensor
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Hella - Corporate Logo
T#:594791
Part#: 12141726548
In Stock at Vendor
$ 83.99

This product was last offered at the strikethrough price on
05-19-2026

$ 78.99 USD
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$ 78.99 USD
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Camshaft Position Sensor
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Bremi - Corporate Logo
T#:598679
Part#: 12141740959
In Stock at Vendor
$ 66.99

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

$ 64.99 USD
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$ 64.99 USD
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Genuine BMW Crankshaft Position Sensor - E34 M5
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Genuine BMW - Corporate Logo
T#:38286
Part#: 12141312895
Ships in 1 day
8% off MSRP $ 249.99

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

$ 228.99 USD
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8% off MSRP
$ 249.99

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

$ 228.99 USD
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Genuine BMW Pulse Generator
This item fits the following BMW Chassis:
E34 M5,E34

Fits BMW Engines including:
S38


Genuine BMW Engine Ground Cable
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Genuine BMW - Corporate Logo
T#:31246
Part#: 11121736201
Ships in 2 Business Days
$ 25.99 USD
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Genuine BMW Earth Strap
This item fits the following BMW Chassis:
E39 M5,E34,E38,E39,E53 X5 X5

Fits BMW Engines including:
M60,M62,S62


Superior Bass Sports Horn Kit 330Hz + 400Hz 112Db
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PIAA - Corporate Logo
T#:31158805
Part#: 85115
Ships on Jul 30, 2026
$ 77.99 USD
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Superior Bass Sports Horn Kit 330Hz + 400Hz 112Db

The Superior Bass Sports Horn Kit 330Hz + 400Hz 112Db is designed to make sure your presence is known with powerful, attention-grabbing sound. These high-performance sports horns feature:

  • Impressive Loudness: Delivers a powerful 112 decibels, ensuring you’re heard in any situation.
  • Dual Frequency: Includes 330Hz and 400Hz horns for a dynamic and distinct sound.
  • Lightweight & Durable: Constructed for easy installation with weather-resistant covers, built to withstand the elements.
  • Easy Installation: Quick and straightforward to install, enhancing vehicle safety with minimal effort.

The kit is a must-have for anyone looking to enhance their vehicle’s horn performance and visibility on the road.

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Genuine BMW Socket repair kit
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Genuine BMW - Corporate Logo
T#:207094
Part#: 61132359996
In Stock
$ 29.99 USD
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Genuine BMW Rep. Kit For Socket Housing - 4 Pol.
This item fits the following BMW Chassis:
E46 M3,E46,E85 Z4,E90,F30,F31,F32,F33,F34,F36,F80 M3,F82 M4,F83


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
Braille Performance GreenLite Lithium-ION Battery - G30 - 5.5lbs ...
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Braille - Corporate Logo
T#:558046
Part#: G30
Ships in 7 Business Days
$ 522.99 USD
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The G30 lithium battery from Braille is designed for the Import Tuner market (4 and 6 cylinder) for track use and has enough power for small black V8 race cars and hot rods with light electrical demands/accessories and standard compression. The G30 comes in the popular ETX 30 Group size, just like the B3121 AGM, so it is small and light enough to mount in a variety of locations. Incorporated in this battery is the same technology used in their race winning batteries used by nearly every OEM developer in classes ranging from SCCA to Formula 1.
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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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Genuine BMW Camshaft Position Sensor - E34 E36 M50 S50
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Genuine BMW - Corporate Logo
T#:183200
Part#: 12141740383
Ships in 1 day
8% off MSRP $ 247.99

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

$ 226.99 USD
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8% off MSRP
$ 247.99

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

$ 226.99 USD
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Genuine BMW Camshaft Position Sensor
This item fits the following BMW Chassis:
E36 M3,E36

Fits BMW Engines including:
M50,S50

Bass Tone Sports Horn Kit 400Hz + 500Hz, 115Db
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PIAA - Corporate Logo
T#:31589317
Part#: 85110
Ships in 9 Business Days
$ 77.99 USD
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OMP Battery Cut Off Switch / Kill Switch
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OMP - Corporate Logo
T#:1614
Part#: EA-462
Back Ordered
$ 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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Camshaft Position Sensor - E30, E34
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Genuine BMW - Corporate Logo
T#:205376
Part#: 12121722570
In Stock
8% off MSRP $ 246.99

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

$ 226.99 USD
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8% off MSRP
$ 246.99

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

$ 226.99 USD
Limited Qty Sale
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Genuine Bmw Pulse Generator -12121722570
Ambient (Outside) Temperature Sensor
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URO - Corporate Logo
T#:376060
Part#: 65811383204
In Stock
$ 32.99 USD
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$ 32.99 USD
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If your old, original sensor has failed, you will not get a correct temperature reading. Replace it and restore function to your BMW.
Hella Hella Horn - Low Tone
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Hella - Corporate Logo
T#:590880
Part#: 2768082
In Stock
$ 36.99 USD
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Disc Type Low-Tone, 12 V, 335 Hz with Bracket

Genuine BMW Starter Solenoid Switch
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Genuine BMW - Corporate Logo
T#:39196
Part#: 12417515393
In Stock
19% off MSRP $ 132.99

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

$ 107.99 USD
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19% off MSRP
$ 132.99

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

$ 107.99 USD
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Genuine BMW Solenoid Switch - Bosch
This item fits the following BMW Chassis:
E39,E46,E83 X3,E85

Fits BMW Engines including:
M54,M56


Hella Hella Horn - High Tone
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Hella - Corporate Logo
T#:592707
Part#: 2768551
In Stock
$ 30.99 USD
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Disc Type High-Tone, 12 V, 400 Hz with Bracket
URO Camshaft Position Sensor - E34 E36 | M20 M50 S50 Engines ...
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URO - Corporate Logo
T#:37925937
Part#: 12141740383
In Stock
$ 33.99 USD
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URO Camshaft Position Sensor - E34 E36 | M20 M50 S50 Engines

The URO Camshaft Position Sensor - E34 E36 | M20 M50 S50 Engines is a high-quality replacement component designed to restore proper engine operation and eliminate trouble codes or check engine lights. Replacing a failed original camshaft position sensor instantly improves engine performance by ensuring accurate timing signals for optimal fuel injection and ignition. With a direct-fit OE replacement design, this sensor offers easy installation, allowing for a seamless plug-and-play setup. Manufactured using premium polymer and metal materials, it withstands high engine temperatures, ensuring reliable performance over the long term.

Key Benefits:

  • Restores engine performance: Replacing the faulty camshaft position sensor restores the proper operation of the engine and eliminates engine codes or check engine lights.
  • Direct-fit installation: The sensor is designed for easy, plug-and-play installation without the need for modifications.
  • Durable construction: Built with high-quality polymer and metal materials to resist intense engine heat and maintain reliable function.
  • Optimized operation: Alloy conductors minimize electrical resistance, ensuring precise operation at all engine RPMs.
  • Long-lasting reliability: Designed and tested for superior durability, ensuring long-term, reliable engine performance.
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Precision Raceworks Ethanol Sensor Breakout Harness
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Precision Raceworks - Corporate Logo
T#:35559424
Part#: 201-0411
In Stock
$ 35.99

This product was last offered at the strikethrough price on
01-22-2026

$ 34.99 USD
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$ 34.99 USD
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n Ethanol Sensor Breakout Harness provides a clean wiring solution by splitting the signal from your ethanol content sensor between two analyzers, such as an ECU/controller and a gauge or Bluetooth display, without modifying your existing harness.his setup enables real-time ethanol level monitoring and facilitates comprehensive DME/ECU adjustments for enhanced automotive performance.citeturn0search0
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OEM Schaeffler Alternator Bearing - BMW E21 E30 E36 E12 E28 E34 E23 E...
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Schaeffler - Corporate Logo
T#:41965072
Part#: 6201-Z
Ships in 7 Business Days
$ 30.99 USD
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Offered by OEM Schaeffler, this bearing replaces BMW part number 12311739203, which is found in numerous BMW alternators manufactured prior to 1996. This bearing helps to stabilize the shaft of the alternator, allowing it to spin freely. If you are experiencing a loud squeaking or grinding noise from your alternator, there is a good chance one of the internal bearings has failed and needs to be replaced.
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Hella Air Horn Kit
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Hella - Corporate Logo
T#:592708
Part#: 3001651
In Stock at Vendor
$ 143.99

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

$ 139.99 USD
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$ 139.99 USD
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Get noticed with this air horn kit from Hella!

Valeo New Alternator - 80 Amp - E34, E36
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Valeo - Corporate Logo
T#:377737
Part#: 12311744564
In Stock at Vendor
$ 549.99

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

$ 533.99 USD
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$ 533.99 USD
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Brand new unit with no core charge
Crankshaft Position Sensor - E34 535i E32 735i 735il
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Facet - Corporate Logo
T#:1119
Part#: 12141720853
In Stock at Vendor
$ 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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Hella Crankshaft Position Sensor - E28, E30, E34
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Hella - Corporate Logo
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


AAF Oil Pressure Sensor Relocate Kit - M20
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Advanced Auto Fabrication - Corporate Logo
T#:7593105
Part#: 116177
Ships in 3 Business Days
$ 69.99 USD
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Since 2010, Advanced Auto Fabrication has been producing and developing both parts and full fledged race cars. Their knowledge base covers a wide range of vehicles both domestic and imported. In the specific case of BMW, the team at AAF has a particular affinity for building and designing components for BMW race cars. AAF's Oil Pressure Sensor Relocation Kit allows for an aftermarket low pressure switch as well as oil pressure sensor, or two 1/8' NPT pressure sensors to be installed. This can allow a gauge or light to be on the dash and still log oil pressure in a data logger. This kit also moves the oil pressure sensor away from the engine and onto the chassis (or any other spot) where is it much easier to access, or install larger size diameter sensors. Fits all M20 Engines. Features: 4AN Stainless Steel Braided Line Banjo Bolt and Fitting (installs onto block) 3 Way 1/8' NPT Tee Fitting, for hose from block and 2 sensors. Note: This kit does not come with sensors – the factory low pressure switch can NOT be used. An aftermarket 1/8″ NPT low pressure switch can be used with the factory wire.
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Camshaft Position Sensor
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Hamburg Tech - Corporate Logo
T#:46684761
Part#: 12121722570
Ships in 1 Business Day
$ 114.99 USD
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