Bosch BMW Electrical Sensors, Switches, & Relays for BMW 3 Series F31 (2014+)

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Electrical gremlins can be very frustrating. Luckily your BMW's electrical system is better than most, even if it's 25 years old. Here you will find electrical relays, sensors, switches, and modules for the engine, camshaft, and crankshaft. Our parts are OEM, Genuine BMW, or approved aftermarket brands that we have an excellent track record with. There is no middle ground with electrical parts - it either works perfectly or not. And there's nothing more frustrating than a new part that fails right out of the box. So it's important to choose quality replacement parts over a cheap but faulty piece.

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OEM Bosch Mass Air Flow Sensor (MAF) -- N20 N26 S55 S63 B38 B46 Z4 ...

T#:389744

Part#: 13627602038

In Stock

$ 247.99

This product was last offered at the strikethrough price on
08-03-2026

$ 161.99 USD

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$ 161.99 USD

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The mass air flow sensor measures the amount of air flow to tell the computer how much fuel to add to the mixture. If the MAF sensor malfunctions, there could be too much or too little fuel added to the mixture.

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Bosch Alternator - 210 amp - Remanufactured - $125 refundable core ch...

T#:580223

Part#: AL9449X

Ships in 1 Business Day

$ 575.99 USD

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$ 575.99 USD

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Bosch New Starter Motor - E84, F30, F31, F32, F34

T#:639189

Part#: 12417638195

Ships in 3 Business Days

$ 324.99

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

$ 314.99 USD

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$ 314.99 USD

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Knock Sensor

T#:54388475

Part#: 13627636937

In Stock

$ 29.99 USD

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$ 29.99 USD

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Keep your ignition timing razor-sharp and your engine safe from destructive detonation. This replacement Knock Sensor acts as your engine's first line of defense, constantly listening for pre-ignition "pinging" or knocking.

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15A Fuse - Priced Each

T#:375327

Part#: 61131372626

In Stock at Vendor

$ 2.03 USD

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$ 2.03 USD

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Remanufactured Bosch Starter - With Core Charge - F30 F31 F25 N47 ...

For vehicles with production date up to 04/2014

T#:639731

Part#: 12418581097KT

Ships on Sep 22, 2026

$ 482.99 USD

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$ 482.99 USD

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This remanufactured starter from Bosch will allow your car to start like it is new. Includes $75 core charge.

Starter

T#:57267806

Part#: 12418625995

Special Order: No Guaranteed ETA

$ 463.99 USD

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$ 463.99 USD

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Bosch starter units deliver the high-torque cranking performance required to reliably start modern high-compression BMW engines under all thermal conditions.

Starter - Remanufactured

T#:57267807

Part#: 12418621839

Special Order: No Guaranteed ETA

$ 342.99 USD

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$ 342.99 USD

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Remanufactured Alternator - 12V - 170A

T#:57267766

Part#: 12317605478

Special Order: No Guaranteed ETA

$ 499.99 USD

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$ 499.99 USD

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Maintain peak battery performance and protect your vehicle's complex electrical architecture with a motorsport-tested, factory-grade charging replacement.

Remanufactured Bosch Starter - With Core Charge - F30 F31 F10 F02 ...

For vehicles with production date from 04/2014

T#:639754

Part#: 12418581099KT

Ships on Sep 22, 2026

$ 437.99

This product was last offered at the strikethrough price on
08-25-2026

$ 414.99 USD

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$ 414.99 USD

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This remanufactured starter from Bosch will allow your car to start like it is new. Includes $75 core charge.

OEM Bosch Remanufactured Starter - SR0861X - BMW F2X F3X N20 2.0L ...

T#:639688

Part#: 12418614519BKT

Ships on Sep 22, 2026

$ 441.99

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

$ 431.99 USD

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$ 431.99 USD

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*Price includes a refundable $75 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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Bosch BMW Electrical Sensors, Switches, & Relays for BMW 3 Series F31 (2014+)

Sub-Categories

OEM Bosch Mass Air Flow Sensor (MAF) -- N20 N26 S55 S63 B38 B46 Z4 ...

Bosch Alternator - 210 amp - Remanufactured - $125 refundable core ch...

Bosch New Starter Motor - E84, F30, F31, F32, F34

Knock Sensor

15A Fuse - Priced Each

Remanufactured Bosch Starter - With Core Charge - F30 F31 F25 N47 ...

Starter

Starter - Remanufactured

Remanufactured Alternator - 12V - 170A

Remanufactured Bosch Starter - With Core Charge - F30 F31 F10 F02 ...

OEM Bosch Remanufactured Starter - SR0861X - BMW F2X F3X N20 2.0L ...

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