1 0 2017 Spicer 337 Rear Differential for a Peterbilt 337 Contact for price Complete Rear Diff/Third Member, 5.57 Gear Ratio, Good Condition, Call DTI Trucks for more information and a shipping quote ConditionUsedFits To Make(s)PETERBILTFits To Model(s)337Stock Number75202 MLS Number13722843CategoryDifferentials, Rear Last Updated8/9/2025 LocationWheat Ridge, CO, US Sold ByDTI Truck Parts (833) 614-___ SHOWNUMBERCall Seller Email Seller Save More Info