The product is an OEM Rear Left Driver Side Lane Change Assist Module for a 2009-2012 Audi S4. It is a genuine Audi part made in Germany, ensuring quality and compatibility with the vehicle. The module comes with a 6-month manufacturer warranty and is a direct fit for the specified rear left side position. With interchange part numbers like 8K0907568H and superseded part numbers like 4L0907568B, this control module unit is a reliable and essential component for the smooth operation of the Audi S4's lane change assist system.

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