View 1 Photo View 0 Videos Dana-Spicer D40-155 Rear Differential for a 2020 Peterbilt 579 $1,995 USD D40-155 2.64 REAR, INSPECTED IN OUR GEAR SHOP, 90 DAY WARRANTY, Ratio: 2.64 ConditionUsedRear End2.64 ratioFits To Make(s)PeterbiltFits To Model(s)579Will Fit Year(s)2020Stock Number21325-4 MLS Number13405396CategoryDifferentials, Rear Last Updated5/15/2026 LocationUcon, ID, US Sold ByHolst Truck Parts (833) 541-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 1 Photo View 0 Videos Dana-Spicer RSP40 Rear Differential for a 2014 Peterbilt 579 $500 USD RSP40 3.55 INSPECTED IN OUR GEAR SHOP, 90 DAY WARRANTY, Ratio: 3.55 ConditionUsedRear End3.55 ratioFits To Make(s)PeterbiltFits To Model(s)579Will Fit Year(s)2014Stock Number110824-4 MLS Number13224036CategoryDifferentials, Rear Last Updated5/15/2026 LocationUcon, ID, US Sold ByHolst Truck Parts (833) 541-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 1 Photo View 0 Videos Dana-Spicer RSP40 Rear Differential for a 2016 Peterbilt 579 $695 USD RSP40 3.36 INSPECTED IN OUR GEAR SHOP, 90 DAY WARRANTY, Ratio: 3.36 ConditionUsedRear End3.36 ratioFits To Make(s)PeterbiltFits To Model(s)579Will Fit Year(s)2016Stock Number40924-4 MLS Number12793062CategoryDifferentials, Rear Last Updated5/15/2026 LocationUcon, ID, US Sold ByHolst Truck Parts (833) 541-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 1 Photo View 0 Videos Dana-Spicer D40-155 Rear Differential for a 2016 Peterbilt 579 $1,695 USD D40-155R 2.79 GOOD INSPECTED UNIT. 90 DAY WARRANTY/EXCHANGE, Axle Spline Count: 41, Core Charge: 400.00, Ratio: 2.79, Casting#: NA ConditionUsedRear End2.79 ratioFits To Make(s)PeterbiltFits To Model(s)579Will Fit Year(s)2016Part NumberD40-155RStock Number22424-3 MLS Number12707320CategoryDifferentials, Rear Last Updated6/13/2026 LocationUcon, ID, US Sold ByHolst Truck Parts (833) 541-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 1 Photo View 0 Videos Dana-Spicer D40-155 Rear Differential for a 2019 Peterbilt 579 $2,250 USD D40-155 RR 2.64 INSPECTED IN OUR GEAR SHOP, 90 DAY WARRANTY, Ratio: 2.64 ConditionUsedRear End2.64 ratioFits To Make(s)PeterbiltFits To Model(s)579Will Fit Year(s)2019Stock Number12024-4 MLS Number12588810CategoryDifferentials, Rear Last Updated5/15/2026 LocationUcon, ID, US Sold ByHolst Truck Parts (833) 541-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 1 Photo View 0 Videos Dana-Spicer RSP40 Rear Differential for a 2014 Peterbilt 579 $650 USD RSP40 3.25 INSPECTED IN OUR GEAR SHOP 90 DAY WARRANTY, Axle Spline Count: 41, Ratio: 3.25 ConditionUsedRear End3.25 ratioFits To Make(s)PeterbiltFits To Model(s)579Will Fit Year(s)2014Stock Number70323-5 MLS Number12166384CategoryDifferentials, Rear Last Updated5/15/2026 LocationUcon, ID, US Sold ByHolst Truck Parts (833) 541-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 1 Photo View 0 Videos Dana-Spicer RSP41 Rear Differential for a 2016 Peterbilt 579 $750 USD RSP41 3.70 INSPECTED IN OUR GEAR SHOP, Ratio: 3.70 ConditionUsedRear End3.70 ratioFits To Make(s)PeterbiltFits To Model(s)579Will Fit Year(s)2016Stock Number11823-10 MLS Number11849338CategoryDifferentials, Rear Last Updated6/13/2026 LocationUcon, ID, US Sold ByHolst Truck Parts (833) 541-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 4 Photos View 0 Videos Dana-Spicer RSP40 Rear Differential for a 2017 Peterbilt 579 Contact for price (Used) 2017 Peterbilt 579, REAR DIFFERENTIAL GEARS ONLY- Part Number: C2-1A13FA3000000001, Serial Number: HN05045034, Make: Spicer, Model: RSP40, Ratio: 3.36, Capacity: 20,000 Lbs, For more... ConditionUsedRear End3.36 ratioFits To Make(s)PeterbiltFits To Model(s)579Will Fit Year(s)2017Part NumberC2-1A13FA3000000001Stock NumberP-55384 MLS Number12223680CategoryDifferentials, Rear Last Updated5/13/2026 LocationElkton, MD, US Sold ByCRG Heavy Truck Parts (844) 402-___ SHOWNUMBERCall Seller Email Seller Save More Info