1991 Dodge B350 Ring and Pinion Set RWD - Dana 70 Rear - Ring and Pinion Set - 3.73 Ratio - 5/8 in. Offset - 29 Spline Pinion - Fits 3 Series 4.10 & Down Carrier - Rear guaranteed to replace your current 1991 Dodge B350 Ring and Pinion Set RWD - Dana 70 Rear - Ring and Pinion Set - 3.73 Ratio - 5/8 in. Offset - 29 Spline Pinion - Fits 3 Series 4.10 & Down Carrier - Rear. 1991 Dodge B350 Ring and Pinion Set comes new OEM 1991 Dodge B350 Ring and Pinion Set aftermarket new 1991 Dodge B350 Ring and Pinion Set of remanufactured 1991 Dodge B350 Ring and Pinion Set RWD - Dana 70 Rear - Ring and Pinion Set - 3.73 Ratio - 5/8 in. Offset - 29 Spline Pinion - Fits 3 Series 4.10 & Down Carrier - Rear.