BMW Voltage Regulator - Genuine BMW 12317540657

Ensure the integrity and performance of your BMW's electrical system with this **Genuine BMW Voltage Regulator (Part #12317540657 / OE #12317540657)**. This critical component precisely regulates the voltage output from your alternator, protecting sensitive electronic systems from fluctuations and ensuring your battery receives consistent, optimal charging.

Crafted to BMW's exacting standards, this genuine part guarantees perfect fitment and reliable operation. It is specifically designed for BMW models equipped with 3.0L L6 N52 and N51B30A Gas engines, including the **325i (2006), 330i (2006), 525i (2006-2007), 525xi (2006-2007), 530xi (2006-2007), Z4 (2006-2008), and 328i (2007)**. Additionally, it fits the **128i (2008-2013)**, specifically for models with a Bosch Alternator.

Replace your failing voltage regulator with this authentic BMW component to restore stable power delivery and prevent costly damage to your vehicle's electronics.