This is a genuine Fendt 138870000000 pinion, an authentic OEM component designed for reliable power transmission in Fendt agricultural tractors. Featuring 20 teeth, an outer diameter of 100 mm, an inner diameter of 40 mm, and a length of 51 mm, this high-quality part ensures optimal performance and durability. It is compatible with a wide range of Fendt Farmer, Favorit, and Vario series tractors, providing a precise fit and restoring original equipment functionality.