The JD8191 Bearing Cone is a genuine John Deere part designed to fit various John Deere equipment models, including tractors and self-propelled forage harvesters. It is compatible with a range of John Deere models such as the 4040, 5020, 4020, 7750, 4612, 4230, 8430, 7500, 9557, 4000, 4320, 7520, 4430, 7350, 4609, 7020, 7550, 4611, 7850, 4613, 7450, 7950, and 4524. This high-quality bearing cone ensures smooth and efficient operation of John Deere equipment, making it a reliable and essential part for heavy equipment maintenance and replacement.