View 0 Photos View 0 Videos 2001 Eaton DS405 Front Differential for a Peterbilt 378 $1,314 USD (USED) Eaton DS405 Ratio: 5.57 Side Gear Splines: 41 W/ Locker: NO Cast#: 131812 ConditionUsedFits To Make(s)PeterbiltFits To Model(s)378Stock Number25977761 MLS Number14306137CategoryDifferentials, Front Last Updated4/20/2026 LocationCouncil Bluffs, IA, US Sold ByVander Haag's Inc. (855) 370-___ SHOWNUMBERCall Seller Email Seller Save More Info