This is a Brand New starter ring gear for tractors. This is used on models 2000, 2600, 2610, 3000, 3230, 3430, 3600, 3610, 3910, 4000, 4110, 4130, 4430, 4610, 4830, 5000, 5030, 5600, 5610, 5700, 5900, 6600, 6610, 6710, 7000, and 7710 all models with the diesel engine. Replaces part numbers E2NN6384AA and C5NE6384AA. Be sure to add me to your ! Thanks For Your Business!! 1109-5050