The John Deere RE501766 is a genuine OEM 12-volt starter motor designed for reliable engine cranking in a wide range of John Deere agricultural and construction machinery. This 3.0 kW starter features a 10-tooth pinion and clockwise rotation, ensuring robust performance and direct fitment. It is a critical component for starting diesel engines in models such as the 6120R, 6140R, 6150R, 6170R, 6190R, 6210R, 7200R, 7215R, 7230R, 7250R, 7270R, 7290R, 7310R, 8245R, 8270R, 8295R, 8320R, 8345R, 8370R, 9370R, 9420R, 9470R, 9520R, 9570R, 9620R tractors, and various combine, sprayer, and loader models. This starter ensures optimal engine ignition and is built to John Deere's rigorous quality standards.