GM 11.5" Rear Axle Assembly 01-07 GM 2500 3500, 3.73 G80 Posi - USA Standard

11.5" GM 2500/ 3500 Rear End Axle Assembly, 3.73 w/LSD (Positraction) (Opt Gt4) G80, fits model years 2001-07, 1.25" U/J CAP. Replacement rear axle assemblies from USA Standard come complete with all differential components in one part number for easy, bolt-on installation.