Ford Sterling 10.25 Full Floater rear axle from a 1996 or 1997 F-250 crewcab, I purchased the rear axle back in 2002 so this axle has only seen like 5 to 6 years of service before it was wrecked. These were used in the old body style Ford F-250s and F-350s between 1985 and 1997.
Has 3.55 gears...