New primary drive clutch for John Deere AMT600, AMT622, AMT626 Gators AM108520 May 5, 2024 admin New primary drive clutch for John Deere AMT600, AMT622 and AMT626 Gators. Replaces part number AM108520. No longer available through John Deere. Made by the same company that made the original clutch for John Deere. Includes a new shaft key.