This is one of the metal tubes that the windows go up and down on, sometimes called an elevator shaft. Left side door only. Application 1969-70 Mercury Cougar and Ford Mustang including Mach 1. Two per door. Front is same as rear.
Ford part # C9ZZ-6521547-A.
Do you have questions about Glue-In vs Bolt-In glass? How about how to properly install Glue-In glass in your 1969 Cougar or Mustang? Check out our video below for some great glassy information!