The Yukon USA Standard 4340 chromoly left-hand inner axle is a heavy-duty replacement built from high-tensile 4340 chrome-moly and heat treated for trail durability. Made to fit Dana 30 front differentials in XJ, TJ and YJ applications, it measures 16.63" from splines to u-joint center, uses 27 splines and accepts 5-760X series u-joints for direct fit.
USA Standard 4340 Chrome-Moly Axle / XJ/TJ/YJ LH Inner / 27Spl / Uses 5-760X U/Joint