This front CV axle shaft assembly includes 2 replacement axles for the left and right front positions on 1999-2006 Chevrolet Silverado 1500 models. Built from alloy steel and carbon steel, it is designed for OEM-level fit and dependable drivetrain performance. The assembly features a sealed neoprene boot pre-greased with high-temperature moly grease to help resist dirt, heat, and wear. Precision flange and spline design supports proper alignment and smooth power transfer. A pre-installed output shaft nut helps simplify installation.