357.14.123.01A or 3571412301A Dana input shaft. An input shaft is the first shaft in the drivetrain to receive drive power, and it passes that power on to the gearing downstream, so it is typically made from hardened steel to carry the full load. This one is a genuine Dana part from Pro Gear and Transmission. Call us with your unit details to confirm proper fit before you order.FeaturesInput shaft that receives drive power and passes it to the gearingGenuine Dana partPart number 357.14.123.01A or 3571412301A