The Chelsea 5P1157 is a genuine Chelsea input gear assembly for Chelsea power takeoff units. The input gear is a core drivetrain component within the PTO, transmitting rotational force from the transmission to the power takeoff. This part carries the Chelsea factory part number 5P1157 and is sold by Pro Gear and Transmission. If you are sourcing this gear as a direct replacement or service part for a Chelsea PTO, call us to confirm it matches your specific unit before ordering.FeaturesGenuine Chelsea part number 5P1157Input gear assembly for Chelsea power takeoff unitsDirect factory replacement for Chelsea PTO service and repairSold by Pro Gear and TransmissionCall us to confirm proper fit for your specific PTO applicationUsed in these Chelsea PTO models440 Series442 Series446 Series447 Series488 Series489 Series645 Series