Review on Enhanced Motorcraft YH-1767 A/C Heater Blend Door Lever for Improved Performance by Brett Robinson

I replaced both drives on my 2004 Ford Expedition. Although they are very similar, they are not the same. So if you need to replace either one, I've included a picture with part numbers for both. This is circled in red. If yours clicks and you don't know which one, simply remove the cup holder and tray to access both. Uncheck one and when the clicking stops, it's the one. I replaced both so I don't have to come back if the other one breaks as they use cheap plastic gears that break.