BMW Electrical Sensors, Switches, & Relays for BMW F82 M4 S55 3.0L

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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 ...

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T#:389744

Part#: 13627602038

In Stock

$ 246.99

This product was last offered at the strikethrough price on
07-16-2026

$ 244.99 USD

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$ 244.99 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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URO Manifold Absolute Pressure (MAP) Sensor - BMW N54 N20 N26 S55 S63...

For vehicles with a production date from 07/2018+

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T#:36032311

Part#: 13628644433

In Stock

$ 71.99 USD

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$ 71.99 USD

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The MAP sensor, or manifold absolute pressure sensor, works with the engine computer to set the fuel curve and give readings to the engine computer. If yours is faulty, it may cause improper running, rich or lean fuel curves, or other general performance issues. Replace yours with this unit to keep your engine running at full potential. For N54 applications, you will need adapter harness T#583821- This TMAP sensor is typically used in high-boost applications for the N54

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Bosch Remanufactured Starter Motor - BMW N55 S55 3.0L

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T#:40004862

Part#: SR9521XKT

In Stock at Vendor

$ 465.99

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

$ 454.99 USD

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$ 454.99 USD

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The advertised price includes a refundable $78 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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