The John Deere R50138NO is a genuine conical pinion designed for robust performance in agricultural machinery. This essential component is engineered for Carraro front axles, specifically models 20.25, 20.29, 20.35, 20.39, 20.45, 20.49, 20.55, 20.59, 20.65, 20.69, 20.75, 20.79, 20.85, 20.89, 20.95, and 20.99. It is commonly found in a wide range of John Deere 5M, 5R, 6MC, 6RC, and 6R series tractors. Featuring 11 teeth on the pinion and 43 teeth on the crown wheel, this heavy-duty part ensures precise power transmission and weighs approximately 5.60 kg, built for durability and reliable operation in demanding agricultural applications. It is also cross-referenced as Carraro 65388.