Rubber coupler for connecting the drive motor and the geardrive for operating the ASC factory sunroofs. American Sunroof Corporation started using this shorter connector sometime in late 1968 on the very early 1969 cars. ASC power sunroofs (technically moonroofs since they had solid covers instead of glass) were offered on many new cars such as Mercury Cougar, Lincoln Mark series, Ford Thunderbird, and many Mopars or Dodge, Chrysler, and Plymouth cars.