This is a genuine OEM Fiat 9263973 Crown Wheel and Pinion, essential for the differential assembly of various Fiat tractor models. It ensures proper power transmission and smooth operation for models including the Fiat 1000, 1000 Super, 1180, 1180 DT, 1280, 1280 DT, 1380, 1380 DT, 1580, 1580 DT, 1880, and 1880 DT. Manufactured to original specifications for reliable performance and durability.