5 0 2014 Spicer RSP41 Rear Differential for a Peterbilt 579 $700 USD 3.42 ratio, Dana / Spicer RSP41 rear rear drop in / differential in 3.42 ratio pulled from a 2014 Peterbilt 579, non-wrecked. Differential appears to be in good used condition. ConditionUsedRear End3.42 ratioFits To Make(s)PETERBILTFits To Model(s)579Stock Number8733 MLS Number12655895CategoryDifferentials, Rear Last Updated4/29/2025 LocationSpokane Valley, WA, US Sold ByHigh Mountain Horsepower (833) 913-___ SHOWNUMBERCall Seller Email Seller Save More Info