Description Additional Info Product Reviews YA G12479337 Yukon GM 8" Axle Shaft Left 28 Spline 2004-2012 w/ Z71 31-15/16" 40012449, 12479337 28 spline 6 lug 31 15/16" long Fits GM 8.0" in Colorado and Canyon with Z71 package Left hand side UPC: 883584215752