This set of friction discs transmits torque through the power take-off clutch pack. The discs sit between the drive shaft and the output hub, engaging when hydraulic pressure compresses the pack. Worn discs cause slip under load, reducing the power delivered to the implement and generating heat that can damage adjacent components. As an original AGCO part, the friction material and spline geometry match the original clutch pack's engagement timing and torque capacity. On installation, inspect the separator plates for flatness and replace any that show scoring.