8G4189 Bearing-Self Aligning Fits Caterpillar 65C 65D 65E 75C 75D 75E 85C 85DOne New Aftermarket Replacement Self Aligning Bearing Fits Caterpillar (Fits CAT) Challenger Agricultural Tractors This aftermarket replacement self aligning spherical plain bearing is designed for use on Fits Caterpillar Challenger rubber track agricultural tractors. Self aligning bearings accommodate shaft misalignment and are commonly found in steering linkage, drawbar, and implement attachment assemblies on these machines, helping maintain smooth,