1997 - 2004 Buick Regal / Century / Lesabre / Park Avenue Radio / 1996 Riviera / Stereo / Tuner Control Knob. This is a genuine OEM Buick part, not the cheap aftermarket stuff.    The knob has been thoroughly inspected and is in good shape. There are no cracks around the mounting hole on the back which is where these knobs typically break. **Please make sure this knob matches your existing knob prior to purchase, please compare our pictures, Buick used, on rare occasions, a different knob setup on the stereos in the above model lines during the same model year. thank you! We offer free shipping on this item as well as a money back guarantee. Please contact us with any questions that you may have.