USA Standard replacement Ring & Pinion "thick" gear set for Dana 44 in a 5.13 ratio. USA Standard ring & pinion sets are the right choice when price is a factor and quality is essential. USA Standard Gear offers a full line of ring & pinion sets for a variety of common & hard to find applications. USA standard gear offers a lower cost alternative to other manufacturers when price must be kept low. USA standard gears are not recommended for quiet running vehicles. USA standard gear offers a standard one year warranty against defects on their ring & pinion sets. This is a thick gear for a 3.73 & down carrier. carrier bolts must be reamed out to 7/16" for this gear.