Ford, Chrysler & GM speedometer gears are composed of a "drive" gear and a "driven" gear.
- TCI® offers "driven" gears for Chrysler, Ford & GM
- Ford "drive" gears are machined into the output shaft; tailhousing may need to be removed to determine number of teeth
- Chrysler "drive' gears are machined into the output shaft & have 13 teeth
- GM "drive' gears of various sizes are available from TCI®