This 6 tooth ignition switch actuator sector gear installs directly behind the ignition switch on Buick vehicles with tilt steering wheels.
When turning the key, the sector gear turns the ignition rack assembly and activates the ignition switch.
Fits: All Buicks with tilt steering wheel 1969-1977
To purchase a sector gear for 1969-77 Buick vehicles without tilt steering, please click this link #120-604.6B