1973 Ford E Series Van Differential Carrier E-100 Econoline - Yukon Dura Grip positraction - Dana 44 - 30 Spline axles - 3.92 And Up ratios - Rear guaranteed to replace your current 1973 Ford E Series Van Differential Carrier E-100 Econoline - Yukon Dura Grip positraction - Dana 44 - 30 Spline axles - 3.92 And Up ratios - Rear. 1973 Ford E Series Van Differential Carrier comes new OEM 1973 Ford E Series Van Differential Carrier aftermarket new 1973 Ford E Series Van Differential Carrier of remanufactured 1973 Ford E Series Van Differential Carrier E-100 Econoline - Yukon Dura Grip positraction - Dana 44 - 30 Spline axles - 3.92 And Up ratios - Rear.