View 0 Photos View 0 Videos 1995 Eaton RP402 Rear Differential for a Peterbilt 377 Newly Listed $786 USD (USED) Eaton RP402 Ratio: 3.90 Side Gear Splines: 41 W/ Locker: NO Cast#: 128108-C ConditionUsedFits To Make(s)PeterbiltFits To Model(s)377Stock Number25970675 MLS Number14280963CategoryDifferentials, Rear Last Updated4/2/2026 LocationWinimac, IN, US Sold ByVander Haag's Inc. (855) 370-___ SHOWNUMBERCall Seller Email Seller Save More Info