The Chelsea 5P1021 is an input gear designed for Chelsea power takeoff units. Input gears are a critical drivetrain interface component, transferring rotational power from the transmission to the PTO output. This part is sold by Pro Gear and Transmission as a genuine Chelsea replacement component. If you need to verify this gear fits your specific PTO model or transmission application, give us a call before ordering.FeaturesChelsea part number 5P1021Input gear for Chelsea power takeoff (PTO) unitsGenuine Chelsea replacement componentDirect replacement for Chelsea PTO input gear applicationsSold by Pro Gear and TransmissionUsed in these Chelsea PTO models352 Series440 Series442 Series446 Series447 Series452 Series488 Series