1996 - 1999 Ford Taurus / Mercury Sable OEM AC Heater Power Climate Control Knob. This is a genuine Ford / Mercury OEM part, not the cheap aftermarket stuff. Part number F6DZ-18519-BB.  The knob has been thoroughly inspected and is in good used condition. **Please make sure your current knob matches the knob in our pictures, both front and back prior to purchase, Ford / Mercury used two different style knobs on the same year Taurus / Sable vehicles.  Please contact us with any questions you may have about this part. We offer a full money back guarantee on this part as well as free shipping.