One New Aftermarket Replacement MFWD Planetary Ring Gear Fits John Deere, Fits Ford, and Fits Case IH TractorsThis aftermarket replacement MFWD planetary ring gear fits the ZF APL325 and APL325N 4WD front axle assembly used across Fits John Deere, Fits Ford (Fits New Holland), and Fits Case IH (Fits International Harvester) tractor lines. The ring gear is a key component of the front axle planetary differential, transmitting engine power to the front wheels on MFWD-equipped tractors. Fits John Deere models with the APL325 4WD front axle only -- verify your axle type before ordering.Specifications Teeth: 114 Outer Diameter: 8.16" (207mm) Type: Planetary, for MFWD front wheel drive Axle: ZF APL325 / APL325N 4WD front axle Compatible ModelsFits John Deere (APL325 4WD front axle -- serial number restrictions apply): 1550 (s/n 750789 and later), 1640 (s/n 430000 and later), 1750 (s/n 750789 and later), 1850 (s/n 750789 and later), 1850N, 1950, 1950N, 2040 (s/n 430000 and later), 2040S (s/n 430000 and later), 2155, 2250, 2350, 2355, 2355N, 2450, 2550, 2555, 2650, 2650N, 2755, 2855Fits Ford/New Holland: 5110, 5610, 5900, 6410, 6610, 6710, 7610, 7710, 7910, 8210Fits Case IH: 385, 395, 485, 495, 585, 595Replaces Part Number(s):L40043, 81452C1, E1NN1N043AA, 83927789, 4472351054, VPJ7849New aftermarket replacement part - not remanufactured, not used.