The Yukon USA Standard 4340 chromoly inner axle is a left-hand replacement for 1978–1979 Ford Dana 60 applications, produced from 4340 chrome-moly and heat-treated for enhanced durability under load. It fits Dana Spicer 60 in 1978–1979 F350 models, uses a 35-spline interface, and measures 34.56" long with a 5-332x U-joint specification for correct fitment in original drivetrains.
USA Standard 4340 Chrome-Moly Replacement Inner Axle For 78-79 Ford Dana 60