The Yukon USA Standard 4340 chromoly left-hand inner axle is a replacement for Dana 44 front differentials in 1969–1980 GM truck applications. Built from high-tensile 4340 and heat treated for strength, it measures 36.13" from spline end to u-joint center and uses a 30-spline interface to deliver a durable, direct-fit axle option.
USA Standard 4340 Chrome Moly Rplcmnt Axle For Dana 44 / 69-80 GM Truck / LH Inner