The Yukon 4340 chromoly axle shaft for 2005–2020 Ford F-250 and F-350 Super Duty 10.5-inch rear differentials is offered as a robust left-side replacement that can be trimmed for precise fit. Yukon builds these shafts from high-tensile 4340 chromoly with cold-rolled splines and advanced heat treating for durability. This left rear axle measures 36.93 inches and can be cut down to fit 34.0–36.9 inch applications, with a 35-spline end.
Yukon 05-20 Ford F-250/F-350 Super Duty 10.5in Rear Differential Chromoly Axle Shaft (Rear Left)