This is an aftermarket 10-tooth pinion, part number EC8023728NO, designed as a non-original replacement component. It is compatible with various agricultural machinery, including models from Massey Ferguson, Fendt, and Valtra. Specific fitment includes Massey Ferguson 300 series (e.g., MF 3050, MF 3060, MF 3070, MF 3080, MF 3090) and 600 series (e.g., MF 6160, MF 6170, MF 6180, MF 6190). It also fits Fendt Farmer 300 series (e.g., Farmer 307, Farmer 308, Farmer 309, Farmer 310, Farmer 311, Farmer 312) and Valtra 6000 series (e.g., 6200, 6300, 6400, 6600, 6800, 6900). This pinion serves as a direct replacement for OEM part numbers such as 8023728NO, 8023728, and V8023728.