Hey Mustang owners! If your speedometer's acting up on your 1983-1998 Ford Mustang, this 20-tooth speedometer driven gear might be exactly what you need. This is a genuine OEM-style replacement that comes with the O-ring included, so you've got everything required for the repair. It's the standard black Ford speedometer gear that fits most standard transmissions and transfer cases with right-hand gears from 1963 and up. Perfect for when your speedometer starts bouncing, stops working entirely, or you've changed your gear ratio and need to recalibrate. Installation is pretty straightforward if you're comfortable working on transmissions - just make sure your Mustang is between 1983-1998 model years. The quality matches original equipment, so you know it'll last and work perfectly. Whether you're restoring a classic Mustang or just keeping your daily driver running smoothly, this little gear can solve big speedometer problems. Much cheaper than taking it to a shop, and often it's just a quick fix that gets your speedometer working accurately again. Just confirm your transmission type and model year before ordering to make sure this 20-tooth gear is the right one for your specific setup!