The Yukon USA Standard replacement axle fits 1979–1993 Ford Mustang, Thunderbird and Cougar models with 8.8-inch differentials. This 31-spline axle measures 29 1/4 inches long, carries a 5-lug flange, and is intended as a factory-style replacement for 8.8" applications in those vehicles. It restores proper spline engagement and wheel mounting for compatible rear assemblies.
USA Standard Axle For Mustang. T-Bird & Cougar / 8.8in / 31 Spline / 5 Lug / 29 1/4in Long