This white plastic spacer fits into the back of the right hand inner knob on cars without factory fader or balance. If your inner knob is loose and will not align, you will want to see if this part is in place. The pictures show an example of how it looks once installed. 1968-70 AM-FM radios would not utilize this part because they have a balance feature. Also
found on various 1976-70 Ford and Mercury cars such as Galaxie,
Fairlane, Torino, Ranchero, Falcon, Montego, and Thunderbird. The knobs
shown in the example are the reproduction 1968 radio console knobs. We also sell the 4 knob set.
*Installation Tip* - Orient keying tab so disc arm is at 6 O'clock position.
Ford part # C7SA-18A945-A.