1999 Ford F Series Trucks Axle Shaft F-350 Super Duty - 4WD - Dana 60 - Reverse Rotation - 30 Spline - 15.39 in. Length - Front Left Inner guaranteed to replace your current 1999 Ford F Series Trucks Axle Shaft F-350 Super Duty - 4WD - Dana 60 - Reverse Rotation - 30 Spline - 15.39 in. Length - Front Left Inner. 1999 Ford F Series Trucks Axle Shaft comes new OEM 1999 Ford F Series Trucks Axle Shaft aftermarket new 1999 Ford F Series Trucks Axle Shaft of remanufactured 1999 Ford F Series Trucks Axle Shaft F-350 Super Duty - 4WD - Dana 60 - Reverse Rotation - 30 Spline - 15.39 in. Length - Front Left Inner.