View 0 Photos View 0 Videos 2007 Eaton RSP40 Rear Differential for a Peterbilt 387 $795 USD USED EATON RSP40 REAR DIFFERENTIAL ASSEMBLY - RATIO: 3.55 ConditionUsedRear End3.55 ratioFits To Make(s)PETERBILTFits To Model(s)387Stock Number57994 MLS Number12820534CategoryDifferentials, Rear Last Updated10/2/2026 LocationCrandall, TX, US Sold ByTim Jordan's Truck Parts Inc. (833) 359-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 0 Photos View 0 Videos 2019 Eaton RSP40 Rear Differential for a Peterbilt 579 $350 USD (USED) Eaton RSP40 Ratio: 3.08 Side Gear Splines: 41 W/ Locker: NO Cast#: N/A Ref# 771604 ConditionUsedFits To Make(s)PeterbiltFits To Model(s)579Part Number771604Stock Number26060469 MLS Number14625451CategoryDifferentials, Rear Last Updated9/25/2026 LocationSioux Falls, SD, US Sold ByVander Haag's Inc. (855) 370-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 0 Photos View 0 Videos Eaton RSP40 Rear Differential for a 2014 Peterbilt 579 $895 USD Good low mile diff 90 day warr. Ext warr available, Ratio: 3.36 ConditionUsedRear End3.36 ratioFits To Make(s)PeterbiltFits To Model(s)579Will Fit Year(s)2014Stock Number3615-10 MLS Number9001110CategoryDifferentials, Rear Last Updated5/14/2026 LocationUcon, ID, US Sold ByHolst Truck Parts (833) 541-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 0 Photos View 0 Videos 2016 Eaton RSP40 Rear Differential for a Peterbilt 579 $415 USD (USED) Eaton RSP40 Ratio: 3.25 Side Gear Splines: 41 W/ Locker: NO Cast#: N/A Ref# N/A ConditionUsedFits To Make(s)PeterbiltFits To Model(s)579Part NumberN/AStock Number25830535 MLS Number13752116CategoryDifferentials, Rear Last Updated8/16/2025 LocationSioux Falls, SD, US Sold ByVander Haag's Inc. (855) 370-___ SHOWNUMBERCall Seller Email Seller Save More Info