Bosch Alternator for BMW X6 M S63 4.4L

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The alternator keeps the battery in a constant state of charge anytime the engine is running. If your lights are dimming or you hear excessive bearing noise around the alternator, chances are that it's time for a replacement.
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OEM Bosch Remanufactured Alternator - AL9445X - E70/71 F01/02 F07/10 F12/13
OEM Bosch Remanufactured Alternator - AL9445X - E70/71 F01/02 F07/10 ...
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Bosch - Corporate Logo
T#:639671
Part#: 12317603782BKT
Ships on Jul 1, 2026
$ 674.99

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

$ 657.99 USD
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$ 657.99 USD
Free Shipping
Add to Wish List
*Price includes a refundable $75 Core Charge* The alternator in your vehicle keeps the battery at full charge when your engine is running. Because all of your electronic systems run off of this small piece, it's important that it is operational. If your lights are dim while driving or your battery dies within minutes of starting your car, it's time for a new alternator. 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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