The John Deere HXE128830 is a genuine OEM alternator pulley designed for 200 AMP alternators. This high-quality pulley ensures efficient power transmission and reliable operation in various John Deere agricultural and construction machinery, including 7R, 8R, 9R, 9RT, 9RX series tractors, S-series and X9 combines, 8000 and 9000 series forage harvesters, and more. It is a critical component for maintaining the alternator's function and overall electrical system integrity. This part supersedes and replaces HXE106485.