Clutch release bearing. For models using Sealed Type release bearing. Tractors: 350, 350B, 420, 430, 435, 440, 450, 450B, 450C, 450D, 450E, 450G, 455, 77, 2510, 2520, 3020, 3300, 4000, 4010, 4020, 4040, 4230, 4240, 4320, 4400, 4420, 4430, 6000 Hi Cycle, 6600, 6620, 7700, 7720. Original equipment manufacturer shows substituting AM3983T in many applications. 3.546 inch outside diameter, 2.063 inch bore, .7500 inch wide.
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