Used rubber elbow that vents air to the blower motor on most 1967 Mercury Cougar and Ford Mustangs with factory air conditioning. At some point in time, this elbow design changed. Easy to tell, this early style connects to a nipple on the fan blower motor. The later version has a hole in the motor case. Not needed with new production fan motors, they don't even have the hole.
Replaces Ford part number C7ZA-19A786-B.