The 3689943M2 is a genuine OEM gear, crucial for power transmission in various agricultural machinery. This robust component is specifically designed for a wide range of Massey Ferguson tractors, including models from the 100, 200, 300, 500, 600, 8000, 8100, 8200, 3000, 3100, 3600, 3900, 4200, 4300, 6100, 6200, 6400, and 8200 XTRA series. It also fits McCormick CX, MC, MTX, and XTX series tractors, ensuring broad compatibility and reliable performance.