View 0 Photos View 0 Videos 1992 Eaton DS402 Front Differential for a Peterbilt 377 $1,995 USD (USED) Eaton DS402 Ratio: 4.11 Side Gear Splines: 41 W/ Locker: NO Cast#: 128107C ConditionUsedFits To Make(s)PeterbiltFits To Model(s)377Stock Number26001257 MLS Number14387269CategoryDifferentials, Front Last Updated5/24/2026 LocationDes Moines, IA, US Sold ByVander Haag's Inc. (855) 370-___ SHOWNUMBERCall Seller Email Seller Save More Info