Yukon 1541H alloy 4 lug rear axle for '79 - '93 8.8" Ford Mustang HD. axle has a length of 29-1/4" inches and 31 splines. Yukon 1541H alloy axles offer a strength increase over stock while retaining a low cost. Yukon 1541H alloy rear axles come with a five year warranty against manufacturing defects. This is a C-clip axle.