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BMW Electrical Sensors, Switches, & Relays

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.

This category contains parts that fit the following chassis:

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Oil Pressure Switch

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T#:591879

Part#: 12611277642

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$ 1.99 USD

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$ 1.99 USD

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Your vehicle is equipped with numerous gauges to allow you to have a better idea of what is going on under the hood. By monitoring these gauges, you can prevent premature engine damage due to low oil pressure or high coolant temperatures. If one isn't functional though, you are in the dark as far as that system goes. One of the most vital is the oil pressure. Replace the sensor to get your gauge working properly again.

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Genuine BMW Battery Cable (Plus Pole) Sbk - 61126928990 - E63,E63 M6 ...

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T#:138283

Part#: 61126928990

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3% off MSRP $ 374.99

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

$ 361.99 USD

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3% off MSRP

$ 374.99

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

$ 361.99 USD

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Genuine BMW Battery Cable (Plus Pole) - Sbk
This item fits the following BMW Chassis:
E63 M6,E63

OEM Bosch Remanufactured Alternator - AL9453X - F10 528i, F25 2.8i N...

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T#:639658

Part#: 12317591271KTKT

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$ 555.99 USD

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$ 555.99 USD

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*Price includes a refundable $65 Core Charge* If your car won't turn over, there is a good chance your starter is shot. Bosch's OEM starter is a high-quality replacement that will give you peace of mind thanks to its long life-span. Bosch is one of the largest OEM producers of Genuine BMW and aftermarket parts in the world, providing parts for almost every major automotive manufacturer. Bosch has likely supplied many of the original electrical (and mechanical) parts for your BMW. Thanks to their quality, high durability, and reliability, you should expect a long service life from Bosch products. As a leading source of high-performance BMW parts and accessories since 1993, we at Turner Motorsport are honored to be the go-to supplier for tens of thousands of enthusiasts the world over. With over two decades of parts, service, and racing experience under our belt, we provide only quality performance and replacement parts. All of our performance parts are those we would (and do!) install and run on our own cars, as well as replacement parts that are Genuine BMW or from OEM manufacturers. We only offer parts we know you can trust to perform!

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17 X 23 X 3 / FPM RD

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T#:15015283

Part#: 13627792257

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$ 3.99

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

$ 2.99 USD

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$ 2.99 USD

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Replacement camshaft position sensor o-ring for N57/N57/M57 Diesels

Alternator - 105 Amp Compact

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T#:568371

Part#: 12317515030KT2KT

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$ 1,211.99

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

$ 1,203.99 USD

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$ 1,203.99 USD

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includes a $192.50 core charge

Flywheel Pickup - Mounts In Bell Housing - 2 Per Car - Sold Individua...

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T#:578903

Part#: 12141710668A

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$ 43.99 USD

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$ 43.99 USD

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Cover Electronics Box - Z4

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T#:187300

Part#: 12907578120

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4% off MSRP $ 51.99

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

$ 49.99 USD

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4% off MSRP

$ 51.99

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

$ 49.99 USD

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Genuine BMW Cover For E-Module -
This item fits the following BMW Chassis:
E89 Z4

Fits BMW Engines including:
N20,N52N,N54,N54T

Crankshaft Position Sensor

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T#:594976

Part#: 12141721504

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$ 88.34 USD

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$ 88.34 USD

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Battery Charge Module - F15

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T#:533968

Part#: 61426817834

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6% off MSRP $ 871.99

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

$ 815.99 USD

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6% off MSRP

$ 871.99

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

$ 815.99 USD

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OEM INA Alternator Pulley - E60, E90

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T#:42167235

Part#: EA0202

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$ 46.99

This product was last offered at the strikethrough price on
06-19-2026

$ 33.99 USD

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$ 33.99 USD

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Whether you have a failing component or are performing preventive maintenance, this INA Alternator Pulley from Turner Motorsport is the perfect choice to keep your BMW’s electrical and accessory systems operating at peak performance.

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Engine Oil Level Sensor - 12618608780

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T#:54816234

Part#: 1000540

Special Order: No Guaranteed ETA

$ 116.99

This product was last offered at the strikethrough price on
06-10-2026

$ 89.00 USD

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$ 89.00 USD

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When BMW threw out the mechanical dipstick, they shifted the responsibility of protecting your engine entirely to the electronic oil level sensor. On the street or the track, knowing your oil level is non-negotiable. If your dashboard sensor readout is throwing errors or lagging, your N52, N54, N55, S55, or N63 engine is operating in the dark. This Febi Bilstein engine oil level sensor is an excellent, cost-effective alternative to expensive dealership parts counter pieces. Febi is an industry-trusted German manufacturer, ensuring this sensor reads with the exact same precision and calibration as original equipment. Keep your ultimate driving machine properly monitored and safe from oil starvation. Key Features Premium German Engineering: Manufactured by Febi Bilstein to match original BMW operational tolerances. Critical Engine Protection: Restores accurate iDrive/instrument cluster oil volume and temperature readouts. Exact Factory Fit: Features the correct 3-pin oval plug orientation for a seamless plug-and-play install. Track-Day Insurance: Ensures your electronic monitoring system functions flawlessly under heavy load. Turner Tip: Oil level sensors are notorious for failing due to age and repeated heat cycles. Because this sensor installs directly into the bottom of the oil pan, make this swap part of your next oil service kit checklist.

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Alternator - 210A

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T#:17140151

Part#: 12317616126

Back Ordered

$ 521.99

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

$ 506.99 USD

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$ 506.99 USD

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No core charge required!

Hitachi Voltage Regulator - BMW E36 Z3 E34

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T#:48850070

Part#: 12321739435

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$ 60.99 USD

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$ 60.99 USD

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Alternator voltage regulators are a crucial component that controls the alternator's output, preventing overcharging by adjusting the current to keep vehicle voltage within a safe range, protecting the battery and electrical system. Symptoms of failure include dim lights, battery warnings, or a dead battery, often requiring replacement, which can be internal or external to the alternator

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Genuine BMW Engine Wiring Harness

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T#:572317

Part#: 12517857116

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5% off MSRP $ 839.99

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

$ 796.99 USD

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5% off MSRP

$ 839.99

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

$ 796.99 USD

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Genuine BMW Engine Wiring Harness

An essential component for maintaining optimal performance and electrical reliability in your BMW vehicle. Crafted to BMW's exacting standards, this engine wiring harness ensures proper connectivity and functionality of various engine components. Its durable construction and precise engineering guarantee long-lasting durability, while its seamless integration with the engine system ensures proper function. Trust Genuine BMW parts to keep your BMW running smoothly.

Maintains optimal performance and electrical reliability
Ensures proper connectivity of engine components
Durable construction for long-lasting durability
Precise engineering for proper function
Seamless integration with engine system

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OEM INA Alternator Pulley - Overrunning Type - E82, E88, E9x, F10, F2...

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T#:42167226

Part#: EA0141

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$ 71.99 USD

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$ 71.99 USD

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Whether you're replacing a failing alternator pulley or performing preventive maintenance, this Alternator Pulley ensures your BMW continues to perform with factory precision and reliability.

Accessory Drive Belt Kit - E34, E83

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T#:42167237

Part#: FB0198K

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$ 166.99 USD

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$ 166.99 USD

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Ideal for scheduled maintenance or as a preventive repair, the Accessory Drive Belt Kit offers dependable performance and peace of mind for BMW owners looking to maintain factory-quality operation and longevity

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Alternator

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T#:594102

Part#: 12311247288

Back Ordered

$ 547.99

This product was last offered at the strikethrough price on
05-08-2026

$ 532.99 USD

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$ 532.99 USD

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Replacement Alternator from Valeo

OEM Bosch Crankshaft Sensor - E70 E90 M57 3.0L

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T#:639133

Part#: 13627809334

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$ 120.99 USD

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$ 120.99 USD

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The crankshaft position sensor measures the speed at which the crank is turning and adjusts fueling via the ECU to match. If it fails, your computer will not know the speed and will fuel it improperly. Replace yours with a Bosch unit to get your computer reading everything properly again. Installs exactly in the place of your old sensor and will eliminate your car's idle, performance, and misfiring problems.

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Remanufactured Alternator - 105A - E36 M3 S50 Euro Only

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For European models only

T#:378167

Part#: 12311403936KT

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$ 1,465.16 USD

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$ 1,465.16 USD

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Remanufactured Genuine BMW 105 Amp Alternator Note: This product includes a $200 core charge to be refunded once we receive your rebuildable core.

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