1986 Dodge B250 Differential Spool Chrysler 8.25 in. Rear - w/ 10 Bolt Cover - 29 Spline Axles - Spartan Locker - Installs into standard open carrier case - Rear guaranteed to replace your current 1986 Dodge B250 Differential Spool Chrysler 8.25 in. Rear - w/ 10 Bolt Cover - 29 Spline Axles - Spartan Locker - Installs into standard open carrier case - Rear. 1986 Dodge B250 Differential Spool comes new OEM 1986 Dodge B250 Differential Spool aftermarket new 1986 Dodge B250 Differential Spool of remanufactured 1986 Dodge B250 Differential Spool Chrysler 8.25 in. Rear - w/ 10 Bolt Cover - 29 Spline Axles - Spartan Locker - Installs into standard open carrier case - Rear.