1971-73 Ford Mustang/Merc. Cougar A/C center vent vacuum actuator. Ford Part No. D1ZZ-18A318-A. May fit other models to be determined by buyer. This is the vacuum motor which controls the AC/heat door. It has two vacuum ports and includes the screwed on extension piece. Tested, holds vacuum. Very good condition used, no rust. $40, serious buyers only no trades. Location Portland, Oregon. Please message me if interested.