View 1 Photo View 0 Videos Dana-Spicer DSP40 Front Differential for a 2014 Peterbilt 579 $995 USD DSP40 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 Number110824-3 MLS Number13224035CategoryDifferentials, Front 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 Eaton RSP40 Rear Differential for a 2016 Peterbilt 579 $795 USD RSP40 3.55 GOOD INSPECTED TAKEOUT. 90 DAY WARRANTY EXCHANGE, Axle Spline Count: 41, Serial#: NA, Core Charge: 350, Ratio: 3.55 ConditionUsedFits To Make(s)PeterbiltFits To Model(s)579Will Fit Year(s)2016Part NumberNAStock Number81224-2 MLS Number13068923CategoryDifferentials, 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 Meritor-Rockwell MT-40-14X Front Axle Housing for a 2017 Peterbilt 579 $1,495 USD GOOD USED FLEX AIR HOUSING ASSEMBLY/ DRUM BRAKE/ MERITOR 40-14X, Serial#: NA, Hub Bolts: 10, Suspension: FLEX AIR/AG380, Brake Type: DRUM ConditionUsedFits To Make(s)PeterbiltFits To Model(s)579Will Fit Year(s)2017Stock Number70924-11 MLS Number12988105CategoryAxle Housings, Front Last Updated5/15/2026 LocationUcon, ID, US Sold ByHolst Truck Parts (833) 541-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 2 Photos View 0 Videos Meritor-Rockwell 20-14X Rear Axle Housing for a 2023 Peterbilt 579 $1,695 USD USED REAR AXLE HOUSING, AG380 FLEX AIR SUSPENSION, 20-14X, DRUM BRAKES, Hub Bolts: 10 PILOT, Suspension: AG380 FLEX AIR, Brake Type: DRUM ConditionUsedFits To Make(s)PeterbiltFits To Model(s)579Will Fit Year(s)2023Stock Number62424-6 MLS Number12957113CategoryAxle Housings, Rear Last Updated5/15/2026 LocationUcon, ID, US Sold ByHolst Truck Parts (833) 541-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 2 Photos View 0 Videos Meritor-Rockwell MT40-14X Front Axle Housing for a 2023 Peterbilt 579 $1,695 USD USED FRONT AXLE HOUSING, AG380 FLEX AIR SUSPENSION, 40-14X, DRUM BRAKES, Hub Bolts: 10 PILOT, Suspension: AG380 FLEX AIR, Brake Type: DRUM ConditionUsedFits To Make(s)PeterbiltFits To Model(s)579Will Fit Year(s)2023Stock Number62424-5 MLS Number12957112CategoryAxle Housings, Front 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 Paccar DX40 Rear Differential for a 2024 Peterbilt 579 $2,100 USD DX40 RR 279 INSPECTED IN OUR GEAR SHOP 90 DAY WARRANTY 2024 PETE LOW MILES,21K, Ratio: 279 ConditionUsedRear End2.79 ratioFits To Make(s)PeterbiltFits To Model(s)579Will Fit Year(s)2024Stock Number60824-3 MLS Number12932754CategoryDifferentials, 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 Meritor-Rockwell MT40-14X Front Axle Housing for a 2019 Peterbilt 579 $1,495 USD GOOD USED FRONT HOUSING ASSEMBLY, Serial#: NA, Hub Bolts: 10, Suspension: FLEXAIR, Brake Type: DRUM ConditionUsedFits To Make(s)PeterbiltFits To Model(s)579Will Fit Year(s)2019Part NumberGETStock Number40824-14 MLS Number12779293CategoryAxle Housings, Front 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 Axle Housing for a 2016 Peterbilt 579 $1,695 USD GOOD USED HOUSING ASSEMBLY/ BEARING SURFACES WILL BE INSPECTED, Serial#: NA, Hub Bolts: 10, Suspension: FLEX AIR, Brake Type: DISC ConditionUsedFits To Make(s)PeterbiltFits To Model(s)579Will Fit Year(s)2016Part NumberNAStock Number22424-12 MLS Number12707329CategoryAxle Housings, 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 Front Differential for a 2016 Peterbilt 579 $2,750 USD D40-155 2.79 GOOD INSPECTED TAKEOUT/ 90 DAY WARRANTY EXCHANGE, Core Charge: 500, Ratio: 2.79, Clutch Housing Size: 1, Casting#: NA ConditionUsedRear End2.79 ratioFits To Make(s)PeterbiltFits To Model(s)579Will Fit Year(s)2016Part NumberD40-155Stock Number22424-2 MLS Number12707319CategoryDifferentials, Front Last Updated5/15/2026 LocationUcon, ID, US Sold ByHolst Truck Parts (833) 541-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 3 Photos View 0 Videos Dana-Spicer D40-155 Rear Axle Housing for a 2019 Peterbilt 579 $2,250 USD REAR AXLE HOUSING D40-155 RR, AG380 FLEXAIR SUSPENSION, DISC BRAKES, Hub Bolts: 10 PILOT, Suspension: AG380 FLEX AIR, Brake Type: DISC ConditionUsedFits To Make(s)PeterbiltFits To Model(s)579Will Fit Year(s)2019Stock Number12024-6 MLS Number12588812CategoryAxle Housings, 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 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 D40-155 Front Differential for a 2019 Peterbilt 579 $2,495 USD D40-155 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 Number12024-3 MLS Number12588809CategoryDifferentials, Front 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 Eaton RSP41 Rear Differential for a 2018 Peterbilt 579 $595 USD RSP41 3.25 INSPECTED IN OUR GEAR SHOP, 90 DAY WARRANTY, Ratio: 3.25 ConditionUsedRear End3.25 ratioFits To Make(s)PeterbiltFits To Model(s)579Will Fit Year(s)2018Stock Number122523-4 MLS Number12553174CategoryDifferentials, 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: 3.7 ConditionUsedRear End3.70 ratioFits To Make(s)PeterbiltFits To Model(s)579Will Fit Year(s)2016Stock Number11823-10 MLS Number11849338CategoryDifferentials, 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 Meritor-Rockwell MT40-14X Rear Axle Housing for a 2018 Peterbilt 579 $1,395 USD GOOD USED RR HOUSING 20-14X FLEX AIR, Suspension: FLEX AIR, Brake Type: DISC ConditionUsedFits To Make(s)PeterbiltFits To Model(s)579Will Fit Year(s)2018Stock Number122219-2 MLS Number10037967CategoryAxle Housings, Rear Last Updated5/14/2026 LocationUcon, ID, US Sold ByHolst Truck Parts (833) 541-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 1 Photo View 0 Videos Eaton D40-155 Front Differential for a 2017 Peterbilt 579 Contact for price MILES 841677 D-40-155, Ratio: 293 ConditionUsedRear End2.93 ratioFits To Make(s)PeterbiltFits To Model(s)579Will Fit Year(s)2017Stock Number446037-3 MLS Number12966713CategoryDifferentials, Front Last Updated5/14/2026 LocationFarr West, UT, US Sold ByRocky Mountain Truck Parts (855) 980-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 3 Photos View 0 Videos 2015 Eaton S26-190D Rear Differential for a Peterbilt 579 $1,725 USD (USED) Eaton S23-190D Ratio: 3.42 Side Gear Splines: 46 W/ Locker: YES Cast#: 515754 ConditionUsedFits To Make(s)PeterbiltFits To Model(s)579Stock Number25621126 MLS Number12745923CategoryDifferentials, Rear Last Updated5/14/2026 LocationSpencer, IA, US Sold ByVander Haag's Inc. (855) 370-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 3 Photos View 0 Videos Meritor MR2014XA Rear Differential for a 2020 Peterbilt 579 $1,000 USD GOOD USED, Core Charge: 500, Ratio: 2.85 ConditionUsedRear End2.85 ratioFits To Make(s)PETERBILTFits To Model(s)579Will Fit Year(s)2020Stock Number2A2E57273 MLS Number14268131CategoryDifferentials, Rear Last Updated5/14/2026 LocationSte-Julie, QC, Canada Sold ByCamions Lussier-Lussicam inc. (844) 503-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 3 Photos View 0 Videos Meritor MD2014X Front Differential for a 2020 Peterbilt 579 Contact for price VERIFICATION PENDING, Ratio: 2.85 ConditionUsedRear End2.85 ratioFits To Make(s)PETERBILTFits To Model(s)579Will Fit Year(s)2020Stock Number2A1E57273 MLS Number14268130CategoryDifferentials, Front Last Updated5/14/2026 LocationSte-Julie, QC, Canada Sold ByCamions Lussier-Lussicam inc. (844) 503-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 2 Photos View 0 Videos Eaton-Spicer RSP41 Rear Differential for a 2016 Peterbilt 579 Contact for price VERIFICATION PENDING, Ratio: 2.93 ConditionUsedRear End2.93 ratioFits To Make(s)PETERBILTFits To Model(s)579Will Fit Year(s)2016Stock Number2A2E56813 MLS Number13909607CategoryDifferentials, Rear Last Updated5/14/2026 LocationSte-Julie, QC, Canada Sold ByCamions Lussier-Lussicam inc. (844) 503-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 2 Photos View 0 Videos Eaton-Spicer DSP41 Rear Differential for a 2016 Peterbilt 579 Contact for price VERIFICATION PENDING, Ratio: 2.93 ConditionUsedRear End2.93 ratioFits To Make(s)PETERBILTFits To Model(s)579Will Fit Year(s)2016Stock Number2A1E56813 MLS Number13909604CategoryDifferentials, Rear Last Updated5/14/2026 LocationSte-Julie, QC, Canada Sold ByCamions Lussier-Lussicam inc. (844) 503-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 2 Photos View 0 Videos Eaton-Spicer RSP41 Rear Differential for a 2014 Peterbilt 579 $700 USD GOOD USED, Core Charge: 0, Ratio: 3.55 ConditionUsedRear End3.55 ratioFits To Make(s)PETERBILTFits To Model(s)579Will Fit Year(s)2014Stock Number2A2E56774 MLS Number13867312CategoryDifferentials, Rear Last Updated5/14/2026 LocationSte-Julie, QC, Canada Sold ByCamions Lussier-Lussicam inc. (844) 503-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 2 Photos View 0 Videos Eaton-Spicer DSP41 Rear Differential for a 2014 Peterbilt 579 $1,500 USD GOOD USED, Core Charge: 450, Ratio: 3.55 ConditionUsedRear End3.55 ratioFits To Make(s)PETERBILTFits To Model(s)579Will Fit Year(s)2014Stock Number2A1E56774 MLS Number13867304CategoryDifferentials, Rear Last Updated5/14/2026 LocationSte-Julie, QC, Canada Sold ByCamions Lussier-Lussicam inc. (844) 503-___ SHOWNUMBERCall Seller Email Seller Save More Info