Yukon 1541H alloy 5 lug rear axle for 8.8 Ford Thunderbird, Cougar, or Mustang with 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 axles come with a five year warranty against manufacturing defects. This is a C-clip axle. Product Features:Fits 1979-1993 Mustang31 spline29 1/4 long5 lug