BMW Electrical Sensors, Switches, & Relays for BMW E30 M3 S14 2.3L

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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 Engine Wiring Harness Cover - E30 318i 318is M3
Genuine BMW Engine Wiring Harness Cover - E30 318i 318is M3
Genuine BMW - Corporate Logo
T#:10013
Part#: 51711380391
In Stock
$ 67.19 USD
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Genuine BMW Covering Wire Harnes Engine
This item fits the following BMW Chassis:
E30 M3,E30

Alternator Adjustment Bracket - E30 M3, E30 318i
Alternator Adjustment Bracket - E30 M3, E30 318i
Genuine BMW - Corporate Logo
T#:7126
Part#: 12311312137
Ships in 1-2 days
2% 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.

$ 90.99 USD
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2% 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.

$ 90.99 USD
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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
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Genuine BMW Alternator Pulley - 66mm - M20 2.5L
Genuine BMW Alternator Pulley - 66mm - M20 2.5L
Genuine BMW - Corporate Logo
T#:19315
Part#: 12311288238
Ships in 1-2 days
3% 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.

$ 106.99 USD
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3% 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.

$ 106.99 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 Fuse box
Genuine BMW Fuse box
Genuine BMW - Corporate Logo
T#:139797
Part#: 61131370763
Ships in 1-2 days
3% 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.

$ 457.99 USD
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3% 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.

$ 457.99 USD
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Genuine BMW Fuse Box
This item fits the following BMW Chassis:
E30 M3,E30

Genuine BMW Outdoor Temperature Sensor / Probe
Genuine BMW Outdoor Temperature Sensor / Probe
For vehicles with production date up to 05/1989
Genuine BMW - Corporate Logo
T#:11195
Part#: 65811385337
Ships in 1-2 days
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.

$ 177.99 USD
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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.

$ 177.99 USD
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Genuine BMW Sensor Outdoor Temperatur
This item fits the following BMW Chassis:
E30 M3,E30

E30 M3, E24 635CSi TDC Reference Sensor
E30 M3, E24 635CSi TDC Reference Sensor
Genuine BMW - Corporate Logo
T#:19368
Part#: 12521287784
Ships in 1-2 days
6% off MSRP $ 299.99

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

$ 282.99 USD
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6% off MSRP
$ 299.99

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

$ 282.99 USD
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This is a reference sensor used for crank position signal for the E24 635 and a top dead center signal for the E30 M3.

The E24 can have a crank position sensor (CPS) in one of two places: mounted in the transmission bellhousing reading the flywheel (early cars) or on the front of the engine block reading the teeth on the front crank pulley (later cars). The BMW parts information does not show a clear cutoff for each so check your car before ordering. The CPS sends a position signal to the DME so the computer knows when the engine is at TDC and can start the car. It's also when the engine is running for ignition timing. If your engine is not starting or running with misfires this is definitely one of the likely causes. Keep one as a spare to avoid downtime or being stranded!

This also sends a TDC signal in the E30 M3 but it's only used during diagnostic tests. The sensor is located on the upper transmission bellhousing, separate from the other reference sensors. It's only sending a signal to the diagnostic connector, not to the ECU itself. One of the problems with these reference sensors is that they all look alike, especially the male pin connectors on the body of the car. The TDC reference sensor itself is shorter and stubbier than the other two sensors on the M3 bellhousing. Unlike the other two sensors it does not have any markings or special features, just a plain black connector. And it's often missing from the car because it is not required to run and previous owners may have removed it to eliminate confusion.

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:
1988-1991 E30 BMW M3
6/1987-1989 E24 BMW 635csi
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Remanufactured Alternator
Remanufactured Alternator
Genuine BMW - Corporate Logo
T#:6699718
Part#: 12312287828KT
Ships in 1-2 days
$ 1,217.99 USD
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$ 1,217.99 USD
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Price includes refundable $200 core charge
Oil Temperature Sensor And Gauge Kit - Green & White - Multiple BMWs
Oil Temperature Sensor And Gauge Kit - Green & White - Multiple BMWs ...
Packaged by Turner - Corporate Logo
T#:401690
Part#: OILTEMPGAUGEKT1
Back Ordered
Sale - Save 2% $ 196.99

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

$ 193.26 USD
Only 0 available at this price
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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
Only 0 available at this price
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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 - Blue & Red - Multiple BMWs
Oil Temperature Sensor And Gauge Kit - Blue & Red - Multiple BMWs ...
Packaged by Turner - Corporate Logo
T#:401689
Part#: OILTEMPGAUGEBRKK
Back Ordered
Sale - Save 2% $ 196.99

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

$ 193.26 USD
Only 0 available at this price
Free Shipping
Add to Wish List
Sale - Save 2%
$ 196.99

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

$ 193.26 USD
Only 0 available at this price
Free Shipping
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.
Show More Show Less

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