The John Deere AL220357 is a genuine OEM steering cylinder seal kit designed for the bar and piston assembly of John Deere agricultural tractors. This essential kit ensures proper sealing and hydraulic function, preventing leaks and maintaining steering system integrity across a wide range of John Deere 6R, 7R, and D/M series models, including 6100D, 6110D, 6115D, 6120D, 6125D, 6130D, 6140D, 6105M, 6110M, 6115M, 6120M, 6125M, 6130M, 6140M, 6145M, 6150M, 6155M, 6170M, 6175M, 6195M, 6215R, 6230R, 6250R, 6R 105, 6R 110, 6R 120, 6R 130, 6R 140, 6R 150, 6R 165, 6R 185, 6R 215, 6R 230, 6R 250, 7200R, 7210R, 7215R, 7230R, 7250R, 7260R, 7270R, 7280R, 7290R, 7310R, 7R 210, 7R 230, 7R 250, 7R 270, 7R 290, 7R 310, 7R 330, and 7R 350 models.