This Yukon USA Standard 4340 chromoly left-hand inner axle is made for 1979–1987 GM truck and Blazer applications with an 8.5" front differential. Constructed from high-tensile 4340 and heat treated for strength, it measures 35.46" from splines to u-joint center, uses a 28-spline interface and accepts 5-760X series u-joints for reliable replacement.
USA Standard 4340 Chrome Moly Axle Shaft / Left Hand Inner For 79-87 GM / 35.46in