View 0 Photos View 0 Videos 2011 Eaton DDP40 Front Differential for a Peterbilt 388 Newly Listed $2,238 USD (USED) Eaton DDP40 Ratio: 3.36 Side Gear Splines: 41 W/ Locker: YES Cast#: 132043 Ref# 514619 ConditionUsedFits To Make(s)PeterbiltFits To Model(s)388Part Number514619Stock Number26014639 MLS Number14423996CategoryDifferentials, Front Last Updated6/13/2026 LocationDes Moines, IA, US Sold ByVander Haag's Inc. (855) 370-___ SHOWNUMBERCall Seller Email Seller Save More Info