View 4 Photos View 0 Videos Dana-Spicer D40-155H Front Differential for a 2020 Peterbilt 579 Contact for price (Used) 2020 Peterbilt 579, FRONT DIFFERENTIAL GEARS ONLY- Part Number: 515579, Serial Number: HN07787568, Make: Spicer, Model: D40-155H, Ratio: 2.79, Capacity: 19,000 Lbs, Reference images... ConditionUsedRear End2.79 ratioFits To Make(s)PeterbiltFits To Model(s)579Will Fit Year(s)2020Part Number515579Stock NumberP-504226 MLS Number14427194CategoryDifferentials, Front Last Updated6/13/2026 LocationElkton, MD, US Sold ByCRG Heavy Truck Parts (844) 402-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 6 Photos View 0 Videos Dana-Spicer D40-155H Front Differential for a 2020 Peterbilt 579 Contact for price (Used) 2020 Peterbilt 579, COMPLETE FRONT REAR TANDEM- Part Number: 515579, Serial Number: HN07787568, Make: Spicer, Model: D40-155H, Ratio: 2.79, Capacity: 19,000 Lbs, Hub Bolts: 10, Brake... ConditionUsedRear End2.79 ratioFits To Make(s)PeterbiltFits To Model(s)579Will Fit Year(s)2020Part Number515579Stock NumberP-504224 MLS Number14427192CategoryDifferentials, Front Last Updated6/14/2026 LocationElkton, MD, US Sold ByCRG Heavy Truck Parts (844) 402-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 1 Photo View 0 Videos Dana-Spicer D46-170 Front Differential for a 2022 Peterbilt 579 Contact for price 2022 PETE 579 LOW AIR LEAF, 54" SPREAD, ABS, 40000 LBS, Ratio: 3.58 ConditionUsedRear End3.58 ratioFits To Make(s)PeterbiltFits To Model(s)579Will Fit Year(s)2022Stock Number3736-PETE-5 MLS Number13347803CategoryDifferentials, Front Last Updated5/13/2026 LocationSTURGEON COUNTY, AB, Canada Sold ByBadger Truck Parts Ltd. (855) 624-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 1 Photo View 0 Videos Dana-Spicer D46-170 Rear Differential for a 2022 Peterbilt 579 Contact for price 2022 PETE 579 SPICER D46-170, DOUBLE LOCKS, 3.58 RATIO, 46000 LBS, Ratio: 3.58 ConditionUsedRear End3.58 ratioFits To Make(s)PeterbiltFits To Model(s)579Will Fit Year(s)2022Stock Number3736-PETE-4 MLS Number13347802CategoryDifferentials, Rear Last Updated5/13/2026 LocationSTURGEON COUNTY, AB, Canada Sold ByBadger Truck Parts Ltd. (855) 624-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 6 Photos View 0 Videos Dana-Spicer S20-045B Rear Axle Assembly for a 2016 Peterbilt 579 $5,995 USD (Used) 2016 Peterbilt 579, COMPLETE REAR REAR TANDEM- Spicer® EconoTrek™ Tandem Axle. Front Drive Rear and Tag Rear no gears. Make: Spicer/Dana, Model: S20-045B, Serial Number: HN04227810,... ConditionUsedRear End2.69 ratioFits To Make(s)PeterbiltFits To Model(s)579Will Fit Year(s)2016Part Number7051751Stock NumberP-51009 MLS Number12130173CategoryAxle Assemblies, Rear Last Updated5/13/2026 LocationElkton, MD, US Sold ByCRG Heavy Truck Parts (844) 402-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 5 Photos View 0 Videos Dana-Spicer DSP40 Front Differential for a 2025 Peterbilt 579 $3,149.98 USD (Used) 2025 Peterbilt 579, COMPLETE FRONT DIFFERENTIAL GEARS ONLY- Serial Number: 122YMY02527475, Make: Spicer, Model: DSP40, Ratio: 3.08, Capacity: 20,000 Lbs, Reference images for... ConditionUsedRear End3.08 ratioFits To Make(s)PeterbiltFits To Model(s)579Will Fit Year(s)2025Stock NumberP-109573 MLS Number13779339CategoryDifferentials, Front Last Updated5/13/2026 LocationElkton, MD, US Sold ByCRG Heavy Truck Parts (844) 402-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 5 Photos View 0 Videos Dana-Spicer DSP40 Front Differential for a 2017 Peterbilt 579 $1,799.99 USD (Used) 2017 Peterbilt 579, COMPLETE FRONT REAR TANDEM- Part Number: C1-1A43FA3000000001, Serial Number: HN05045033, Make: Spicer, Model: DSP40, Ratio: 3.36, Capacity: 20,000 Lbs, Hub... ConditionUsedRear End3.36 ratioFits To Make(s)PeterbiltFits To Model(s)579Will Fit Year(s)2017Part NumberC1-1A43FA3000000001Stock NumberP-55376 MLS Number12223672CategoryDifferentials, Front Last Updated5/13/2026 LocationElkton, MD, US Sold ByCRG Heavy Truck Parts (844) 402-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 4 Photos View 0 Videos Dana-Spicer DSP40 Front Differential for a 2017 Peterbilt 579 $999.99 USD (Used) 2017 Peterbilt 579, FRONT DIFFERENTIAL GEARS ONLY- Part Number: C1-1A43FA3000000001, Serial Number: HN05045033, Make: Spicer, Model: DSP40, Ratio: 3.36, Capacity: 20,000 Lbs, For... ConditionUsedRear End3.36 ratioFits To Make(s)PeterbiltFits To Model(s)579Will Fit Year(s)2017Part NumberC1-1A43FA3000000001Stock NumberP-55378 MLS Number12223674CategoryDifferentials, Front Last Updated5/13/2026 LocationElkton, MD, US Sold ByCRG Heavy Truck Parts (844) 402-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 3 Photos View 0 Videos Dana-Spicer DSP40 Rear Axle Housing for a 2017 Peterbilt 579 Contact for price (Used) 2017 Peterbilt 579, FRONT DIFFERENTIAL HOUSING ONLY- Part Number: C1-1A43FA3000000001, Serial Number: HN05045033, Make: Spicer, Model: DSP40, Ratio: 3.36, Capacity: 20,000 Lbs, For... ConditionUsedFits To Make(s)PeterbiltFits To Model(s)579Will Fit Year(s)2017Part NumberC1-1A43FA3000000001Stock NumberP-55377 MLS Number12223673CategoryAxle Housings, Rear Last Updated5/13/2026 LocationElkton, MD, US Sold ByCRG Heavy Truck Parts (844) 402-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 3 Photos View 0 Videos Dana-Spicer RSP40 Rear Axle Housing for a 2017 Peterbilt 579 Contact for price (Used) 2017 Peterbilt 579, REAR DIFFERENTIAL HOUSING ONLY- Part Number: C2-1A13FA3000000001, Serial Number: HN05045034, Make: Spicer, Model: RSP40, Ratio: 3.36, Capacity: 20,000 Lbs, For... ConditionUsedFits To Make(s)PeterbiltFits To Model(s)579Will Fit Year(s)2017Part NumberC2-1A13FA3000000001Stock NumberP-55382 MLS Number12223678CategoryAxle Housings, Rear Last Updated5/13/2026 LocationElkton, MD, US Sold ByCRG Heavy Truck Parts (844) 402-___ 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
View 6 Photos View 0 Videos Dana-Spicer DSP40 Front Differential for a 2018 Peterbilt 579 Contact for price (Used) 2018 Peterbilt 579, COMPLETE FRONT REAR TANDEM- Part Number: 514534, Serial Number: HN05183728, Make: Spicer, Model: DSP40, Ratio: 3.08, Capacity: 20,000 Lbs, Hub Bolts: 10, Brake... ConditionUsedRear End3.08 ratioFits To Make(s)PeterbiltFits To Model(s)579Will Fit Year(s)2018Part Number514534Stock NumberP-102923 MLS Number13606545CategoryDifferentials, Front Last Updated7/3/2026 LocationElkton, MD, US Sold ByCRG Heavy Truck Parts (844) 402-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 5 Photos View 0 Videos Dana-Spicer D40-155 Front Differential for a 2020 Peterbilt 579 Contact for price (Used) 2020 Peterbilt 579, FRONT DIFFERENTIAL GEARS ONLY- Part Number: TBD, Serial Number: TBD, Make: Spicer, Model: D40-155, Ratio: 2.79, Capacity: 19,000 Lbs, Reference images for... ConditionUsedRear End2.79 ratioFits To Make(s)PeterbiltFits To Model(s)579Will Fit Year(s)2020Part NumberTBDStock NumberP-494303 MLS Number14094337CategoryDifferentials, Front Last Updated5/13/2026 LocationElkton, MD, US Sold ByCRG Heavy Truck Parts (844) 402-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 4 Photos View 0 Videos Dana-Spicer D40-155 Front Differential for a 2018 Peterbilt 579 Contact for price (Used) 2018 Peterbilt 579, FRONT DIFFERENTIAL GEARS ONLY- Part Number: 134660, Serial Number: TBD, Make: Spicer, Model: D40-155, Ratio: 2.64, Capacity: 19,000 Lbs, Reference images for... ConditionUsedRear End2.64 ratioFits To Make(s)PeterbiltFits To Model(s)579Will Fit Year(s)2018Part Number134660Stock NumberP-498045 MLS Number14158031CategoryDifferentials, Front Last Updated5/13/2026 LocationElkton, MD, US Sold ByCRG Heavy Truck Parts (844) 402-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 5 Photos View 0 Videos Dana-Spicer DSP40 Front Differential for a 2014 Peterbilt 579 Contact for price (Used) 2014 Peterbilt 579, COMPLETE FRONT DIFFERENTIAL GEARS ONLY- Part Number: 511331, Serial Number: BMG006399, Make: Spicer, Model: DSP40, Ratio: 3.90, Capacity: 18,999 Lbs, Reference... ConditionUsedRear End3.90 ratioFits To Make(s)PeterbiltFits To Model(s)579Will Fit Year(s)2014Part Number511331Stock NumberP-112357 MLS Number13867919CategoryDifferentials, Front Last Updated6/13/2026 LocationElkton, MD, US Sold ByCRG Heavy Truck Parts (844) 402-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 5 Photos View 0 Videos Dana-Spicer S20-045B Rear Axle Housing for a 2016 Peterbilt 579 Contact for price (Used) 2016 Peterbilt 579, COMPLETE REAR DIFFERENTIAL HOUSING ONLY- Make: Spicer/Dana, Model: S20-045B, Serial Number: HN04227810, Part Number: 7051751, Ratio: 2.69, Hub Bolts: 10, Brake... ConditionUsedFits To Make(s)PeterbiltFits To Model(s)579Will Fit Year(s)2016Part Number7051751Stock NumberP-51011 MLS Number12130175CategoryAxle Housings, Rear Last Updated5/13/2026 LocationElkton, MD, US Sold ByCRG Heavy Truck Parts (844) 402-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 4 Photos View 0 Videos Dana-Spicer S23-190 Rear Axle Housing for a 2016 Peterbilt 579 Contact for price (Used) 2016 Peterbilt 579, COMPLETE FRONT DIFFERENTIAL HOUSING ONLY- Make: Spicer/Dana, Model: S23-190, Serial Number: HN04727453, Part Number: 515727, 7085061, C2-5GP2BN6000000001, Ratio: 2... ConditionUsedFits To Make(s)PeterbiltFits To Model(s)579Will Fit Year(s)2016Part Number515727Stock NumberP-50997 MLS Number12130161CategoryAxle Housings, Rear Last Updated5/13/2026 LocationElkton, MD, US Sold ByCRG Heavy Truck Parts (844) 402-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 6 Photos View 0 Videos Dana-Spicer DSP40 Front Differential for a 2014 Peterbilt 579 Contact for price (Used) 2014 Peterbilt 579, COMPLETE FRONT REAR TANDEM- Part Number: 511331, Serial Number: BMG006399, Make: Spicer, Model: DSP40, Ratio: 3.90, Capacity: 18,999 Lbs, Hub Bolts: 10, Brake Type... ConditionUsedRear End3.90 ratioFits To Make(s)PeterbiltFits To Model(s)579Will Fit Year(s)2014Part Number511331Stock NumberP-112353 MLS Number13867915CategoryDifferentials, Front Last Updated6/13/2026 LocationElkton, MD, US Sold ByCRG Heavy Truck Parts (844) 402-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 6 Photos View 0 Videos Dana-Spicer DSP41 Front Differential for a 2016 Peterbilt 579 Contact for price (Used) 2016 Peterbilt 579, COMPLETE FRONT REAR TANDEM- Serial Number: HN04665051/HN04665052, Part Number: TBD, Make: Spicer/Dana, Model: DSP41, Ratio: 2.64, Capacity: 19,000Lbs, Hub Bolts:... ConditionUsedRear End2.64 ratioFits To Make(s)PeterbiltFits To Model(s)579Will Fit Year(s)2016Part Number515150Stock NumberP-111749 MLS Number13845305CategoryDifferentials, Front Last Updated5/13/2026 LocationElkton, MD, US Sold ByCRG Heavy Truck Parts (844) 402-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 6 Photos View 0 Videos Dana-Spicer D40-155 Front Differential for a 2018 Peterbilt 579 Contact for price (Used) 2018 Peterbilt 579, COMPLETE FRONT REAR TANDEM- Part Number: 134660, Serial Number: TBD, Make: Spicer, Model: D40-155, Ratio: 2.64, Capacity: 19,000 Lbs, Hub Bolts: 10, Brake Type:... ConditionUsedRear End2.64 ratioFits To Make(s)PeterbiltFits To Model(s)579Will Fit Year(s)2018Part Number134660Stock NumberP-498042 MLS Number14158028CategoryDifferentials, Front Last Updated7/1/2026 LocationElkton, MD, US Sold ByCRG Heavy Truck Parts (844) 402-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 6 Photos View 0 Videos Dana-Spicer D40-155 Front Differential for a 2020 Peterbilt 579 Contact for price (Used) 2020 Peterbilt 579, COMPLETE FRONT REAR TANDEM- Part Number: 10000891, Serial Number: U930382861, Make: Spicer, Model: D40-155, Ratio: 2.79, Capacity: 19,000 Lbs, Hub Bolts: 10, Brake... ConditionUsedRear End2.79 ratioFits To Make(s)PeterbiltFits To Model(s)579Will Fit Year(s)2020Part Number10000891Stock NumberP-494301 MLS Number14094334CategoryDifferentials, Front Last Updated5/13/2026 LocationElkton, MD, US Sold ByCRG Heavy Truck Parts (844) 402-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 3 Photos View 0 Videos Dana-Spicer S23-190 Front Differential for a 2016 Peterbilt 579 Contact for price (Used) 2016 Peterbilt 579, COMPLETE FRONT DIFFERENTIAL GEARS ONLY- Make: Spicer/Dana, Model: S23-190, Serial Number: HN04727453, Part Number: 515727, 7085061, C2-5GP2BN6000000001, Ratio:... ConditionUsedRear End2.69 ratioFits To Make(s)PeterbiltFits To Model(s)579Will Fit Year(s)2016Part Number515727Stock NumberP-51001 MLS Number12130165CategoryDifferentials, Front Last Updated5/13/2026 LocationElkton, MD, US Sold ByCRG Heavy Truck Parts (844) 402-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 6 Photos View 0 Videos Dana-Spicer S23-190 Front Differential for a 2016 Peterbilt 579 Contact for price (Used) 2016 Peterbilt 579, COMPLETE FRONT REAR TANDEM- Make: Spicer/Dana, Model: S23-190, Serial Number: HN04727453, Part Number: 515727, 7085061, C2-5GP2BN6000000001, Ratio: 2.69, Hub Bolts... ConditionUsedRear End2.69 ratioFits To Make(s)PeterbiltFits To Model(s)579Will Fit Year(s)2016Part Number515727Stock NumberP-50995 MLS Number12130159CategoryDifferentials, Front Last Updated5/13/2026 LocationElkton, MD, US Sold ByCRG Heavy Truck Parts (844) 402-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 5 Photos View 0 Videos Dana-Spicer DSP41 Front Differential for a 2016 Peterbilt 579 Contact for price (Used) 2016 Peterbilt 579, FRONT DIFFERENTIAL GEARS ONLY- Serial Number: HN04665051, Part Number: TBD, Make: Spicer/Dana, Model: DSP41, Ratio: 2.64, Capacity: 19,000Lbs, Reference images for... ConditionUsedRear End2.64 ratioFits To Make(s)PeterbiltFits To Model(s)579Will Fit Year(s)2016Stock NumberP-111753 MLS Number13845310CategoryDifferentials, Front Last Updated5/13/2026 LocationElkton, MD, US Sold ByCRG Heavy Truck Parts (844) 402-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 5 Photos View 0 Videos Dana-Spicer RSP 40 Rear Axle Assembly for a 2017 Peterbilt 579 Contact for price (Used) 2017 Peterbilt 579, COMPLETE REAR REAR TANDEM- Part Number: C2-1A13FA3000000001, Serial Number: HN05045034, Make: Spicer, Model: RSP40, Ratio: 3.36, Capacity: 20,000 Lbs, Hub Bolts:... ConditionUsedRear End3.36 ratioFits To Make(s)PeterbiltFits To Model(s)579Will Fit Year(s)2017Part NumberC2-1A13FA3000000001Stock NumberP-55381 MLS Number12223677CategoryAxle Assemblies, Rear Last Updated5/13/2026 LocationElkton, MD, US Sold ByCRG Heavy Truck Parts (844) 402-___ SHOWNUMBERCall Seller Email Seller Save More Info