Ratchet Paw Kit.
The ratchet paw is part of the mechanical brake for your lift system.
This cam engaging the ratchet wheel sprocket is what gives the Colemans the familiar clickty-clickty sound when raising the unit.
Installation tip: The ratchet paw needs to be "rolled back" and resistance set when installing. Almost a full turn is required for the proper tension. Hold the ratchet paw firmly with it rolled back when setting the ratchet paw gear against the housing.
Part number 4716-1221