Genuine OEM part number 8K0803345B — a structural cross-member / reinforcement member located in the rear floor/rail area of the vehicle’s body structure. On the Audi A4 B8-platform (and compatible models) this part supports the rear floor, side rails and contributes to overall structural integrity, alignment and impact safety. If this member is damaged (e.g., due to collision, corrosion or chassis fatigue) the vehicle may exhibit misaligned body panels, compromised crash performance, or uneven ride/handling. Replacement with the correct OEM unit restores the factory-specified strength, fit-and-finish and ensures proper mounting points for the rear suspension and body panels.

Details:

• VIN: WAUAFC8K6CA001143

• Part Number: 8K0803345B (also referenced as 8K0-803-345-B)

• Location: Rear cross-member / reinforcement in the body floor/rail area (likely behind the rear seats / underfloor)

• Compatibility: Fits many Audi A4 (B8) models (approx 2008-2016) and some related Audi A5/RS4/RS5 models using that body-structure part.

• Function: Structural reinforcement part — supports & aligns rear floor/rails, maintains crash integrity and ensures correct suspension/rail alignment.

• Condition: Used OEM (verified) — inspected and ready for reuse, in line with your “fully verified OEM part” requirement.