The product is an OEM front differential carrier for a 2013-2021 Dodge Ram 1500 with a 3.21 ratio. The part number is 440 and it is designed for a 2016 model. The differential is genuine OEM and has been tested. The product is a DODGE TRUCK part made in the United States, specifically for the RAM1500 model. It is interchangeably labeled as part number 440-01470A.