This friction disc spacer sits between the clutch pack discs inside the gearbox, maintaining the correct clearance for proper clutch engagement and disengagement. It is an original AGCO part, machined to the same thickness and inner/outer diameter as the original assembly so that stack height and clamping force are preserved without shimming. A worn or incorrect spacer causes clutch slip or harsh engagement, which can lead to heat damage on the adjacent friction discs. On reinstallation, verify that the spacer is seated flat against the hub shoulder and that the clutch pack torque is set to specification.