Slant-Edge Air Cleaners are the perfect way to complete your dress-up look in premium Slant-Edge style. Whether you have Slant-Edge valve covers, or a set from a different series, these air cleaners with prominent raised or recessed emblems will bring your engine look together in head turning fashion. They are supplied with a genuine 3” Motorcraft® air filter elements (part no. FA612R) for maximum airflow. The air cleaner lid attaches to a short stud that is screwed into the center of the carburetor.