710.04.020.01 or 7100402001 is a genuine Dana Spicer differential component for off highway axle applications, sold by Pro Gear and Transmission. Gears inside a differential let the two wheels on an axle turn at different speeds, which matters whenever the machine turns and one wheel has farther to travel. Letting the wheels match speed this way keeps power delivery smooth, cuts down on tire scrub, and spares the rest of the driveline extra strain. Call us to confirm proper fit for your axle.FeaturesGenuine Dana Spicer partPart number 710.04.020.01 or 7100402001Differential component for off highway axle applicationsA differential lets the two wheels on an axle turn at different speedsSold by Pro Gear and Transmission