This ring is the mounting component that secures the hydraulic cylinder rod to the mating clevis or yoke in the harvester's hydraulic system. It sits at the rod-end of the cylinder, transmitting the linear force from the piston to the driven linkage. A worn or deformed ring can introduce play in the connection, leading to uneven cylinder stroke and reduced control over the attached implement. This original part is machined to the same internal and external diameters as the factory assembly, so it seats correctly in the clevis without requiring additional shims. On reinstallation, ensure the retaining hardware is torqued to the specified value.