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: 350.00, Ratio: 3.55 ConditionUsedFits To Make(s)PeterbiltFits To Model(s)579Will Fit Year(s)2016Part NumberNAStock Number81224-2 MLS Number13068923CategoryDifferentials, 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 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 Updated9/15/2026 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 Updated6/18/2026 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 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 Cummins ISX15 Engine for a 2016 Peterbilt 579 $16,995 USD GOOD RUNNING TAKEOUT ENGINE ASSEMBLY/ROD AND MAIN BEARINGS WILL BE INSPECTED. 180 DAY WARRANTY EXCHANGE, Serial#: 79877300, Core Charge: 4000.00, Horse Power: 450, ARR/CPL: 4583 ConditionUsedCPL/ARR4583Horse Power450 HPFits To Make(s)PeterbiltFits To Model(s)579Will Fit Year(s)2016Part NumberISX15Stock Number22424-4 MLS Number12707321CategoryEngines 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 Front Differential for a 2016 Peterbilt 579 $2,750 USD D40-155 2.79 GOOD INSPECTED TAKEOUT/ 90 DAY WARRANTY EXCHANGE, Core Charge: 500.00, 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 Updated6/13/2026 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 5 Photos View 0 Videos Cummins ISX15 Engine for a 2015 Peterbilt 579 $12,995 USD ISX15 550HP CPL3939 CM2350, EGR DELETED, RUNS GOOD, LITE BLOW BY, CHECK ROD AND MAINS, 180 DAY WARRANTY, Serial#: 79864355, Horse Power: 450, ARR/CPL: CPL4583 ConditionUsedCPL/ARRCPL4583Horse Power450 HPFits To Make(s)PeterbiltFits To Model(s)579Will Fit Year(s)2015Part NumberCM2350Stock Number82123-1 MLS Number12263149CategoryEngines 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 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 5 Photos View 1 Video Cummins ISX15 Engine for a 2023 Peterbilt 579 Contact for price LOW MILES GOOD ENGINE LAST 3/3/26, Serial#: 80494417, Horse Power: 500, ARR/CPL: 5881 ConditionUsedCPL/ARR5881Horse Power500 HPFits To Make(s)PeterbiltFits To Model(s)579Will Fit Year(s)2023Stock Number896581-1 MLS Number14222103CategoryEngines Last Updated7/31/2026 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 1 Photo View 0 Videos 2011-2019 Peterbilt 579 Electronic Chassis Control Module - Used | P/N $1,100 USD 2011-2019 Peterbilt 579 Electronic Chassis Control Module - Used | P/N Q2110773103, Serial#: MUX3-p ConditionUsedFits To Make(s)PeterbiltPart NumberQ2110773103Stock Number295462871 MLS Number12889336CategoryChassis Control Modules Last Updated5/14/2026 LocationWinger, MN, US Sold ByLucken Trucks and Parts (833) 637-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 2 Photos View 0 Videos Automann Heated Rh Black Mirror For Peterbilt 579 2013-2026 p/n 563.75028, Core $299.99 USD Automann Heated Rh Black Mirror for Peterbilt 579 2013-2026 p/n 563.75028, Core Charge: 0.00 ConditionNewFits To Make(s)AutomannStock Number177676 MLS Number14243928CategoryMiscellaneous Truck Parts Last Updated6/13/2026 LocationLouisville, KY, US Sold ByRiver City Truck Parts (855) 465-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 3 Photos View 0 Videos Peterbilt 579 Hood Rest, Paccar P/N L85-6084, Core Charge: 0.00 $250 USD Peterbilt 579 Hood Rest, Paccar P/N L85-6084, Core Charge: 0.00 ConditionNewFits To Make(s)PaccarStock Number171078 MLS Number14242931CategoryMiscellaneous Truck Parts Last Updated6/13/2026 LocationLouisville, KY, US Sold ByRiver City Truck Parts (855) 465-___ 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 3 Photos View 0 Videos Paccar MX-13 EPA13 Engine Control Module (ECM) for a 2017 Peterbilt 579 Contact for price USED,VERIFICATION PENDING, Serial#: 5395SA61290041, Part Make: PACCAR ConditionUsedFits To Make(s)PETERBILTFits To Model(s)579Will Fit Year(s)2017Part Number2015228Stock Number68A1E56281 MLS Number14145956CategoryEngine Control Modules (ECM) Last Updated5/14/2026 LocationSte-Julie, QC, Canada Sold ByCamions Lussier-Lussicam inc. (844) 503-___ SHOWNUMBERCall Seller Email Seller Save More Info