View 0 Photos View 0 Videos 2015 Eaton DSP41 Front Differential for a Peterbilt 389 $1,150 USD (USED) Eaton DSP41 Ratio: 3.42 Side Gear Splines: 41 W/ Locker: NO Cast#: 132038 ConditionUsedFits To Make(s)PeterbiltFits To Model(s)389Stock Number26026584 MLS Number14464574CategoryDifferentials, Front Last Updated7/18/2026 LocationCouncil Bluffs, IA, US Sold ByVander Haag's Inc. (855) 370-___ SHOWNUMBERCall Seller Email Seller Save More Info