1986 Ford F Series Trucks Differential Carrier F-250 - RWD - Dana 60 - Yukon Grizzly Locker - 30 Spline - 4.10 and Down or Thick Gear Ratio's - w/ Full Float Axle - Rear guaranteed to replace your current 1986 Ford F Series Trucks Differential Carrier F-250 - RWD - Dana 60 - Yukon Grizzly Locker - 30 Spline - 4.10 and Down or Thick Gear Ratio's - w/ Full Float Axle - Rear. 1986 Ford F Series Trucks Differential Carrier comes new OEM 1986 Ford F Series Trucks Differential Carrier aftermarket new 1986 Ford F Series Trucks Differential Carrier of remanufactured 1986 Ford F Series Trucks Differential Carrier F-250 - RWD - Dana 60 - Yukon Grizzly Locker - 30 Spline - 4.10 and Down or Thick Gear Ratio's - w/ Full Float Axle - Rear.