Genuine OEM Audi Rear Bumper Diffuser Trim, part number 4G0807833A9B9. This trim piece enhances aerodynamic performance and adds a stylistic element to the vehicle's exterior. It is positioned on the rear bumper, often as part of the diffuser assembly. Made from durable plastic and finished in Satin Black (9B9), it measures approximately 0.99 meters in length. Choosing a genuine OEM trim ensures an exact fit, matching contours, and a factory-correct appearance that aftermarket parts often fail to replicate.