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

Clear BMW chassis

Please ensure your correct model is selected

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.

Sub-Categories

Sort By:

Main / ECU Relay - White - E30 E36 E39 E38 X5
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
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
Free Shipping on orders $49 and up
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
Free Shipping on orders $49 and up
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.
Show More Show Less
Genuine BMW 5 Prong Salmon Relay - Multiple BMWs
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Genuine BMW - Corporate Logo
T#:5390
Part#: 12631742690
In Stock
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
Free Shipping on orders $49 and up
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
Free Shipping on orders $49 and up
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!
Show More Show Less
Genuine BMW White Green Relay - Multiple BMWs
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
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
Free Shipping on orders $49 and up
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
Free Shipping on orders $49 and up
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.

ECS Heavy Duty Ground Cable Upgrade (12421737755) - E30, E36, E39, E4...
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
ECS - Corporate Logo
T#:49996974
Part#: 059235LA01
Ships in 4 Business Days
New Item
Sale - Save 23% $ 29.99

This product was last offered at the strikethrough price on
02-04-2026

$ 23.19 USD
Free Shipping
Sale - Save 23%
$ 29.99

This product was last offered at the strikethrough price on
02-04-2026

$ 23.19 USD
Free Shipping

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.

Show More Show Less

Fuse Box Cover - E30 E24 E23
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Genuine BMW - Corporate Logo
T#:10454
Part#: 61131368802
In Stock
7% off MSRP $ 87.87

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

$ 81.98 USD
Free Shipping on orders $49 and up
7% off MSRP
$ 87.87

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

$ 81.98 USD
Free Shipping on orders $49 and up
This is the Genuine BMW clear plastic fuse box cover for E30 3 series, E24 6 series and E23 7 series. The cover in embossed with fuse and relay locations for ease of use.
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:
1984-1991 E30 BMW 318i 318is 318ic 325e 325es 325i 325ic 325is 325ix M3
1983-1989 E24 BMW 633csi 635csi M6
1983-1987 E23 BMW 733i 735i
Show More Show Less
Braille Performance Lightweight AGM Battery - B14115 - 11.5lbs ...
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Braille - Corporate Logo
T#:558037
Part#: B14115
Ships in 5 Business Days
$ 204.99 USD
Free Shipping on orders $49 and up
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!
Show More Show Less

Genuine BMW Alternator Adjusting Bar - E30 325e 325i, E28 528e ...
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Genuine BMW - Corporate Logo
T#:7124
Part#: 12311274833
In Stock
$ 44.99 USD
Free Shipping on orders $49 and up
Replace the alternator adjuster on BMW's with the M20 engine with this Genuine BMW part. Over time this part can become corroded or the teeth can become stripped.

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:
1984-1991 E30 BMW 325e 325es 325i 325ic 325is 325ix
1982-1988 E28 BMW 528e
Show More Show Less
Genuine BMW Oil Pressure Switch - M12x1.5
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
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
Free Shipping on orders $49 and up
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
Free Shipping on orders $49 and up


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

Show More Show Less

Braille Performance Lightweight Advanced AGM Battery - B2015 - 15lbs ...
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Braille - Corporate Logo
T#:558038
Part#: B2015
Ships in 8 Business Days
$ 237.99 USD
Free Shipping on orders $49 and up
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*
Show More Show Less

Bosch Starter Motor - E30 325e 325i 325is 325ix E34 525i
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
Bosch - Corporate Logo
T#:2275
Part#: SR443X
In Stock
$ 228.99 USD
Free Shipping
$ 228.99 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:
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.

 

Show More Show Less
Genuine BMW Engine Ground Cable - E30
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Genuine BMW - Corporate Logo
T#:22419
Part#: 12511714039
Ships in 1 day
$ 47.99 USD
Free Shipping on orders $49 and up


Genuine BMW Ground Cable - 235mm

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

Fits BMW Engines including:
M10,M20,S14

FAE Reference Sensor - E23, E24, E28, E30
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
FAE - Corporate Logo
T#:583144
Part#: 12141708619
Ships on Jun 25, 2026
$ 46.99 USD
Free Shipping on orders $49 and up
Referred to as the speed sensor & crankshaft position sensor


Race German Fuse Replacement Kit
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Race German - Corporate Logo
T#:2602229
Part#: E30FUSEKIT
In Stock
$ 35.99 USD
Free Shipping on orders $49 and up
Complete set of fuses from OE BMW supplier for direct replacement of blown or mismatched fuses. Kit includes A complete set of new OEM fuses Extra fuses Fuse puller
Genuine BMW Engine Wiring Harness Cover - E30 318i 318is M3
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Genuine BMW - Corporate Logo
T#:10013
Part#: 51711380391
In Stock
$ 67.19 USD
Free Shipping
$ 67.19 USD
Free Shipping


Genuine BMW Covering Wire Harnes Engine
This item fits the following BMW Chassis:
E30 M3,E30

Genuine BMW Battery Hold Down - Multiple BMWs
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Genuine BMW - Corporate Logo
T#:186551
Part#: 61217631587
In Stock
$ 25.88 USD
Free Shipping on orders $49 and up
$ 25.88 USD
Free Shipping on orders $49 and up
The hold down bracket secures the battery in the battery tray to keep it from sliding around.

Schwaben Automatic Battery Tender
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
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
Free Shipping on orders $49 and up
Sale - Save 30%
$ 100.99

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

$ 70.69 USD
Free Shipping on orders $49 and up
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.
Show More Show Less

Genuine BMW Engine Wiring Harness Cover - Lower - E30 318i 318is M3 ...
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Genuine BMW - Corporate Logo
T#:10012
Part#: 51711380390
In Stock
$ 64.50 USD
Free Shipping on orders $49 and up


Genuine BMW Support Wire Harnes Engine
This item fits the following BMW Chassis:
E30 M3,E30

Genuine BMW Engine Wiring Harness Cover - E30 M3
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Genuine BMW - Corporate Logo
T#:10014
Part#: 51711380392
Ships in 1 day
$ 73.78 USD
Free Shipping on orders $49 and up


Genuine BMW Trim Panel Wire Harnes Engine
This item fits the following BMW Chassis:
E30 M3,E30


Genuine BMW Oil Pressure Switch
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Genuine BMW - Corporate Logo
T#:141613
Part#: 61311243414
In Stock
$ 27.99 USD
Free Shipping on orders $49 and up


Genuine BMW Oil Pressure Switch - M12X1,5

Genuine BMW Ground Cable
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
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
Free Shipping on orders $49 and up
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
Free Shipping on orders $49 and up


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


Braille Lightweight Advanced AGM Battery - B3121 - 21lbs
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Braille - Corporate Logo
T#:558042
Part#: B3121
Ships in 5 Business Days
$ 270.99 USD
Free Shipping on orders $49 and up
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*
Show More Show Less

OEM Bosch Voltage Regulator (Bosch Alternator) - 12311726022 ...
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
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
Free Shipping on orders $49 and up
$ 63.99 USD
Free Shipping on orders $49 and up
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.
Show More Show Less
100 Piece Mini Car Fuse Assortment
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
ATD Tools - Corporate Logo
T#:383674
Part#: ATD382
Ships in 6 Business Days
$ 31.99 USD
Free Shipping on orders $49 and up
You never know when you will blow a fuse so it always good to have extra
Genuine BMW Battery Cover - E30 318i 318is 325ix 325i 325is 325e ...
For vehicles with production date from 09/1987
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Genuine BMW - Corporate Logo
T#:9905
Part#: 51471971556
Ships in 1 day
4% off MSRP $ 113.99

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

$ 109.99 USD
Free Shipping
4% off MSRP
$ 113.99

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

$ 109.99 USD
Free Shipping


Genuine BMW Battery Cover -
This item fits the following BMW Chassis:
E30



Alternator Adjustment Bracket - E30 M3, E30 318i
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Genuine BMW - Corporate Logo
T#:7126
Part#: 12311312137
Ships in 1 day
4% off MSRP $ 92.99

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

$ 88.99 USD
Free Shipping
4% off MSRP
$ 92.99

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

$ 88.99 USD
Free Shipping
Replace the alternator adjuster on BMW's with the M20 engine with this Genuine BMW part. Over time this part can become corroded or the teeth can become stripped.

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:
1984-1985 E30 BMW 318i
1988-1991 E30 BMW M3
Show More Show Less
Genuine BMW Trunk-Mounted Battery Tray - E30 318i 318is 325ix 325i 32...
For vehicles with production date up to 09/1987
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Genuine BMW - Corporate Logo
T#:116426
Part#: 51711922158
In Stock
1% off MSRP $ 80.99

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

$ 79.99 USD
Free Shipping on orders $49 and up
1% off MSRP
$ 80.99

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

$ 79.99 USD
Free Shipping on orders $49 and up


Genuine BMW Battery Tray -
This item fits the following BMW Chassis:
E30

Innovate LC-2 Wideband O2 Controller Kit
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Innovate Motorsports - Corporate Logo
T#:28836410
Part#: 38770
In Stock
$ 212.99 USD
Free Shipping on orders $49 and up

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)

Show More Show Less

Flasher/Hazard Light Relay
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Wehrle - Corporate Logo
T#:31522987
Part#: 61311371909
Ships in 1 Business Day
$ 20.37 USD
Free Shipping on orders $49 and up

Genuine BMW Alternator Bushing (20 mm Length) - E10 E12 E21 E23 E24 E...
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Genuine BMW - Corporate Logo
T#:22410
Part#: 12311268447
Ships in 1 day
4% off MSRP $ 45.99

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

$ 43.99 USD
Free Shipping on orders $49 and up
4% off MSRP
$ 45.99

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

$ 43.99 USD
Free Shipping on orders $49 and up


Genuine BMW Bush - 90 Shore Lang

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

Fits BMW Engines including:
M10,M20,M30,S14,S38

Genuine BMW Alternator Pulley - 66mm - M20 2.5L
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
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
Free Shipping
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
Free Shipping


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 Battery Cable - Negative
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Genuine BMW - Corporate Logo
T#:22418
Part#: 12421719664
In Stock
5% off MSRP $ 64.99

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

$ 61.99 USD
Free Shipping on orders $49 and up
5% off MSRP
$ 64.99

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

$ 61.99 USD
Free Shipping on orders $49 and up


Genuine BMW Battery Cable Negative - L=170mm

This item fits the following BMW Chassis:
E30

Fits BMW Engines including:
M10,M20,M42

Genuine BMW Relay - E23, E28, E24, E30
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Genuine BMW - Corporate Logo
T#:14868
Part#: 12631710726
Ships in 1 day
4% off MSRP $ 72.99

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

$ 69.99 USD
Free Shipping on orders $49 and up
4% off MSRP
$ 72.99

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

$ 69.99 USD
Free Shipping on orders $49 and up


Genuine BMW Diode Relay
This item fits the following BMW Chassis:
E30 M3,E30

Fits BMW Engines including:
M20,M30,S14,S38


Genuine BMW Crankshaft position sensor - 528e, E30 M20 2.7L, E34 M20 ...
For vehicles with a production date from 09/1987
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
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
Free Shipping
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
Free Shipping


This item has been superseded to 12141720852

Genuine BMW Trunk-Mounted Battery Tray - E30 318i 318is 325ix 325i 32...
For vehicles with production date from 09/1987
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Genuine BMW - Corporate Logo
T#:116589
Part#: 51711953889
In Stock
6% off MSRP $ 79.99

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

$ 74.99 USD
Limited Qty Sale
Free Shipping
6% off MSRP
$ 79.99

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

$ 74.99 USD
Limited Qty Sale
Free Shipping


Genuine BMW Battery Tray -
This item fits the following BMW Chassis:
E30

Facet Crankshaft Position Sensor - E28, E30, E34
For vehicles with a production date from 09/1987
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Facet - Corporate Logo
T#:554187
Part#: 12141720856
Ships in 1 Business Day
$ 45.99 USD
Free Shipping on orders $49 and up
$ 45.99 USD
Free Shipping on orders $49 and up
Having a crank but no starting issue? This sensor is often the culprit
Race German C101 Diagnosis Plug Firewall Bracket - E30
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Race German - Corporate Logo
T#:6827884
Part#: C101-HOLDER
Ships in 1 Business Day
$ 44.99 USD
Free Shipping on orders $49 and up
Race German has devoted themselves to providing quality products for late model BMWs that cover both street and track applications. Race German has now grown their catalog to a wide variety of models and products geared towards keeping your car looking and running nice. BMW's original C101 bracket which connects to the firewall and holds the diagnosis port unfortunately over time becomes heat soaked and brittle. The OEM bracket, which is no longer available, also features a flawed hinge design that easily wears and breaks. Race German has devised a solution to this issue and developed a new bracket! This heavy duty C101 firewall bracket is completely plug and play. These brackets are CAD designed and feature a two piece design with stainless steel hardware.
Show More Show Less


Genuine BMW Alternator Positive Cable
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Genuine BMW - Corporate Logo
T#:40118
Part#: 12521312124
Ships in 1 day
6% off MSRP $ 50.99

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

$ 47.99 USD
Free Shipping on orders $49 and up
6% off MSRP
$ 50.99

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

$ 47.99 USD
Free Shipping on orders $49 and up


Genuine BMW Ground Cable Alternator - L=170mm

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

Fits BMW Engines including:
M10,M20,M30,M42,S14,S38

Show More Show Less
Genuine BMW Fuse box
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Genuine BMW - Corporate Logo
T#:139797
Part#: 61131370763
Ships in 1 day
5% off MSRP $ 472.99

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

$ 446.99 USD
Free Shipping
5% off MSRP
$ 472.99

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

$ 446.99 USD
Free Shipping


Genuine BMW Fuse Box
This item fits the following BMW Chassis:
E30 M3,E30

Superior Bass Sports Horn Kit 330Hz + 400Hz 112Db
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
PIAA - Corporate Logo
T#:31158805
Part#: 85115
Ships on Jul 30, 2026
$ 77.99 USD
Free Shipping on orders $49 and up
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.

Show More Show Less

Genuine BMW Temperature Sensor
For vehicles with production date from 09/1985
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Genuine BMW - Corporate Logo
T#:375451
Part#: 12621710511
In Stock
8% off MSRP $ 58.99

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

$ 53.99 USD
Free Shipping on orders $49 and up
8% off MSRP
$ 58.99

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

$ 53.99 USD
Free Shipping on orders $49 and up

Genuine BMW Socket repair kit
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Genuine BMW - Corporate Logo
T#:207094
Part#: 61132359996
In Stock
$ 29.99 USD
Free Shipping on orders $49 and up


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

Crankshaft Position Sensor
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Facet - Corporate Logo
T#:6366585
Part#: 12141721861
In Stock
$ 64.11

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

$ 57.99 USD
Limited Qty Sale
Free Shipping on orders $49 and up
$ 64.11

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

$ 57.99 USD
Limited Qty Sale
Free Shipping on orders $49 and up

Reference Sensor - E23, E24, E28, E30
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Hamburg Tech - Corporate Logo
T#:45483620
Part#: 12141708619
Ships in 1 Business Day
$ 49.95 USD
Free Shipping on orders $49 and up
Referred to as the speed sensor & crankshaft position sensor
Safety Pressure Switch
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Santech - Corporate Logo
T#:641428
Part#: 64531386971
Ships in 1 Business Day
$ 41.97 USD
Free Shipping on orders $49 and up
Is your air conditioning system faulting by turning on and off at random, leaving you sweating in the hot summer days? The pressure switch shuts off the A/C compressor if the refrigerant pressure is too low or too high to protect your A/C system components from damage. If the switch is faulty, the A/C compressor will shut off at random intervals, or not turn on at all, without cooling the interior cabin. If this is the case with your A/C system, replace your pressure switch to restore cool air.
Show More Show Less

Braille Performance GreenLite Lithium-ION Battery - G30 - 5.5lbs ...
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Braille - Corporate Logo
T#:558046
Part#: G30
Ships in 7 Business Days
$ 522.99 USD
Free Shipping on orders $49 and up
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.
Show More Show Less

Genuine BMW Fuse Box - 61131382196 - E30,E30 M3, E31 8 Series ...
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Genuine BMW - Corporate Logo
T#:139992
Part#: 61131382196
Ships in 1 day
5% off MSRP $ 38.99

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

$ 36.99 USD
Free Shipping on orders $49 and up
5% off MSRP
$ 38.99

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

$ 36.99 USD
Free Shipping on orders $49 and up

 


Genuine BMW Fuse Box
This item fits the following BMW Chassis:
E30 M3,E30
 

 

Genuine BMW Outdoor Temperature Sensor / Probe
For vehicles with production date up to 05/1989
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Genuine BMW - Corporate Logo
T#:11195
Part#: 65811385337
Ships in 1 day
1% off MSRP $ 178.99

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

$ 176.99 USD
Free Shipping
1% off MSRP
$ 178.99

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

$ 176.99 USD
Free Shipping


Genuine BMW Sensor Outdoor Temperatur
This item fits the following BMW Chassis:
E30 M3,E30

SKF Alternator Ball Bearing 47X17X14 - Multiple BMWs
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
SKF - Corporate Logo
T#:2602208
Part#: 12311722979
Ships in 9 Business Days
$ 29.99 USD
Free Shipping on orders $49 and up
SKF Grooved Ball Bearing - 47X17X14 This item fits the following BMW Chassis: E30 M3,E34 M5,E30,E34,E36 Fits BMW Engines including: M10,M20,M30,M42,S14,S38


Bass Tone Sports Horn Kit 400Hz + 500Hz, 115Db
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
PIAA - Corporate Logo
T#:31589317
Part#: 85110
Ships in 9 Business Days
$ 77.99 USD
Free Shipping on orders $49 and up
OMP Battery Cut Off Switch / Kill Switch
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
OMP - Corporate Logo
T#:1614
Part#: EA-462
Back Ordered
$ 65.00 USD
Free Shipping
$ 65.00 USD
Free Shipping
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.
Show More Show Less