Front Inner Axle Shaft

The USA Standard Gear ZA W39144 is a precision-manufactured front inner axle shaft, specifically engineered for right-hand inner fitment in Dana 44 differentials. Constructed from robust 4340 chromoly steel, this axle offers superior strength and durability for demanding drivetrain applications. It features 30 splines and a length of 33.91 inches from the end of the splines to the center of the U-joint bore. This axle is designed to accommodate a 5-760X U-joint and is a direct replacement for specific Ford models. It is compatible with the 1978-1979 Ford Bronco and the 1976-1979 Ford F-150, both equipped with a Dana 44 front differential and featuring a 30-spline axle. Note that the 1976-1979 Ford F-150 models require a 19-spline axle for the front right inner position, indicating this specific ZA W39144 part with 30 splines is intended for the Bronco and select F-150 configurations. Details for installation and fitment include the shaft length of 33.91 inches. An axle nut is not included with this component. The product also comes with a 5-year warranty against manufacturer defects.