View 8 Photos View 0 Videos 2016 Eaton RSP40 Rear Differential for a Peterbilt 579 $899 USD RSP40 3.55 Inspected Takeout +$250 Core, Capacity: 40K, Ratio: 3.55, Yoke: 1710, Side Gear: 41 Spline, Input: 39 Spline ConditionUsedRear End3.55 ratioFits To Make(s)PETERBILTFits To Model(s)579Stock Number14929 MLS Number13806984CategoryDifferentials, Rear Last Updated12/16/2025 LocationSpokane Valley, WA, US Sold ByHigh Mountain Horsepower (833) 913-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 3 Photos View 0 Videos 2023 Spicer S23190-3.07 Rear Differential for a Peterbilt 579 $1,899 USD S23-190 3.07 Inspected Takeout +$500 core, Take off From ZERO mile (.2 HRS run time on engine) non wrecked truck Yoke SPL250, Side gear 46 Spline, Input 46 Spline ConditionUsedRear End3.07 ratioFits To Make(s)PETERBILTFits To Model(s)579Stock Number12523 MLS Number13371857CategoryDifferentials, Rear Last Updated12/16/2025 LocationSpokane Valley, WA, US Sold ByHigh Mountain Horsepower (833) 913-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 5 Photos View 0 Videos 2014 Eaton RSP41 Rear Differential for a Peterbilt 579 $795 USD RSP41 3.42 Takeout +$150 core, SN: HN04250094, OEM# C2-1C13GB2000000000 ConditionUsedRear End3.42 ratioFits To Make(s)PETERBILTFits To Model(s)579Stock Number11259 MLS Number13160121CategoryDifferentials, Rear Last Updated12/16/2025 LocationSpokane Valley, WA, US Sold ByHigh Mountain Horsepower (833) 913-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 5 Photos View 0 Videos 2016 Eaton RSP40-3.08 Rear Differential for a Peterbilt 579 $995 USD RSP40 3.08 Takeout +$150 Core, Take off from a low mile, non-wrecked truck (31197 MI). ConditionUsedRear End3.08 ratioFits To Make(s)PETERBILTFits To Model(s)579Stock Number10802 MLS Number13071026CategoryDifferentials, Rear Last Updated12/16/2025 LocationSpokane Valley, WA, US Sold ByHigh Mountain Horsepower (833) 913-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 8 Photos View 0 Videos 2014 Spicer RSP41 Rear Differential for a Peterbilt 579 $700 USD RSP41 3.42 Takeout +$150 Core , ConditionUsedRear End3.42 ratioFits To Make(s)PETERBILTFits To Model(s)579Stock Number8733 MLS Number12655895CategoryDifferentials, Rear Last Updated12/16/2025 LocationSpokane Valley, WA, US Sold ByHigh Mountain Horsepower (833) 913-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 5 Photos View 0 Videos 2016 Meritor R40-145-3.36 Rear Differential for a Peterbilt 579 $800 USD R40-145 3.36 Inspected takeout, Yoke SPL170, Side gears 39 Spline ConditionUsedRear End3.36 ratioFits To Make(s)PETERBILTFits To Model(s)579Stock Number12606 MLS Number13400549CategoryDifferentials, Rear Last Updated11/4/2025 LocationSpokane Valley, WA, US Sold ByHigh Mountain Horsepower (833) 913-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 7 Photos View 0 Videos 2023 Meritor MRL2014X279 Rear Differential for a Peterbilt 579 $2,195 USD MRL2014X 2.79 LOCKER Inspected takeout Low mileage from non wrecked truck (11170 miles) + 995 CORE, Yoke 20 WYS, Side gears 41 Spline, Input 39 Spline ConditionUsedRear End2.79 ratioFits To Make(s)PETERBILTFits To Model(s)579Stock Number11760 MLS Number13203219CategoryDifferentials, Rear Last Updated10/19/2025 LocationSpokane Valley, WA, US Sold ByHigh Mountain Horsepower (833) 913-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 2 Photos View 0 Videos Good Used $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 Updated10/10/2025 LocationSte-Julie, QC, Canada Sold ByCamions Lussier-Lussicam inc. (844) 503-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 12 Photos View 0 Videos 2017 Meritor MRL2014X355 Rear Differential for a Peterbilt 579 $1,950 USD MRL2014X 3.55 LOCKER Inspected takeout from low mileage (26143 miles) non wrecked truck. +1000 core Yoke; SPL170, Side gear; 41 Spline, Input shaft; 39 Spline ConditionUsedRear End3.55 ratioFits To Make(s)PETERBILTFits To Model(s)579Stock Number12033 MLS Number13270608CategoryDifferentials, Rear Last Updated8/5/2025 LocationSpokane Valley, WA, US Sold ByHigh Mountain Horsepower (833) 913-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 1 Photo View 0 Videos Meritor-Rockwell 20-14X Rear Differential for a 2016 Peterbilt 579 $695 USD 20-14X 2.79 INSPECTED IN OUR GEAR SHOP 90 DAY WARRANTY, Ratio: 2.79 ConditionUsedRear End2.79 ratioFits To Make(s)PeterbiltFits To Model(s)579Will Fit Year(s)2016Stock Number120920-8 MLS Number10616358CategoryDifferentials, Rear Last Updated1/17/2025 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 Differential for a 2017 Peterbilt 579 $695 USD 20-14X 3.08 GOOD INSPECTED TAKEOUT/ 90 DAY WARRANTY EXCHANGE, Axle Spline Count: 41, Core Charge: 350.00, Ratio: 3.08 ConditionUsedRear End3.08 ratioFits To Make(s)PeterbiltFits To Model(s)579Will Fit Year(s)2017Stock Number70924-2 MLS Number12988096CategoryDifferentials, Rear Last Updated1/16/2025 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 Differential for a 2023 Peterbilt 579 $1,095 USD 20-14X 2.85, 151K MILES, INSPECTED IN OUR GEAR SHOP, 90 DAY WARRANTY, Ratio: 2.85 ConditionUsedRear End2.85 ratioFits To Make(s)PeterbiltFits To Model(s)579Will Fit Year(s)2023Stock Number62424-4 MLS Number12957111CategoryDifferentials, Rear Last Updated6/27/2024 LocationUcon, ID, US Sold ByHolst Truck Parts (833) 541-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 1 Photo View 0 Videos Meritor-Rockwell RSL23161 Rear Differential for a 2020 Peterbilt 579 $1,495 USD RRL23-161 2.80 LOCKER, 166K MILES, INSPECTED IN OUR GEAR SHOP, 90 DAY WARANTY, Ratio: 2.80 ConditionUsedRear End2.80 ratioFits To Make(s)PeterbiltFits To Model(s)579Will Fit Year(s)2020Stock Number60624-3 MLS Number12924246CategoryDifferentials, Rear Last Updated6/9/2024 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 Differential for a 2019 Peterbilt 579 $695 USD 20-14X 3.08 GOOD INSPECTED TAKEOUT/ 90 DAY WARRANTY EXCHANGE, Axle Spline Count: 41, Serial#: NA, Core Charge: 300.00, Ratio: 3.08 ConditionUsedFits To Make(s)PeterbiltFits To Model(s)579Will Fit Year(s)2019Part Number20-14XStock Number40824-3 MLS Number12779283CategoryDifferentials, Rear Last Updated1/16/2025 LocationUcon, ID, US Sold ByHolst Truck Parts (833) 541-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 12 Photos View 0 Videos Meritor-Rockwell MD2014X Rear Differential for a 2023 Peterbilt 579 Contact for price Meritor Rockwell MD20-14T Front Rear Differential Assembly For Sale 2.79 Ratio - Capacity: 20,000 lbs. - Used - May have some cosmetic blemishes (see photos). Give us a shout by phone, email... ConditionUsedRear End2.79 ratioFits To Make(s)PeterbiltFits To Model(s)579Will Fit Year(s)2023Stock NumberPT-0837-7 MLS Number12738560CategoryDifferentials, Rear Last Updated6/30/2024 LocationYork, ON, Canada Sold ByLomoca Inc. (833) 835-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 1 Photo View 0 Videos Meritor-Rockwell 20-14X Rear Differential for a 2020 Peterbilt 579 $995 USD 20-14X RR 2.85 INSPECTED IN OUR GEAR SHOP 90 DAY WARRANTY, Ratio: 2.85 ConditionUsedRear End2.85 ratioFits To Make(s)PeterbiltFits To Model(s)579Will Fit Year(s)2020Stock Number90722-9 MLS Number11607573CategoryDifferentials, Rear Last Updated12/18/2023 LocationUcon, ID, US Sold ByHolst Truck Parts (833) 541-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 0 Photos View 0 Videos 2014 Eaton RSP41 Rear Differential for a Peterbilt 579 $375 USD (USED) Eaton RSP41 Ratio: 3.36 Side Gear Splines: 41 W/ Locker: NO Cast#: N/A Ref# N/A ConditionUsedFits To Make(s)PeterbiltFits To Model(s)579Part NumberN/AStock Number25887846 MLS Number13974676CategoryDifferentials, Rear Last Updated1/9/2026 LocationSioux Falls, SD, US Sold ByVander Haag's Inc. (855) 370-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 0 Photos View 0 Videos 2016 Eaton S23-190 Rear Differential for a Peterbilt 579 $375 USD (USED) Eaton S23-190 Ratio: 2.69 Side Gear Splines: 46 W/ Locker: YES Cast#: N/A Ref# N/A ConditionUsedFits To Make(s)PeterbiltFits To Model(s)579Part NumberN/AStock Number25888290 MLS Number13954801CategoryDifferentials, Rear Last Updated1/9/2026 LocationSioux Falls, SD, US Sold ByVander Haag's Inc. (855) 370-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 0 Photos View 0 Videos 2018 Meritor MR2014X Rear Differential for a Peterbilt 579 $998 USD (USED) Meritor MR2014X Ratio: 2.64 Side Gear Splines: 41 W/ Locker: YES Cast#: 3200-F-1878 Ref# N/A ConditionUsedFits To Make(s)PeterbiltFits To Model(s)579Part NumberN/AStock Number25891420 MLS Number13974658CategoryDifferentials, Rear Last Updated1/9/2026 LocationSioux Falls, SD, US Sold ByVander Haag's Inc. (855) 370-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 0 Photos View 0 Videos 2015 Eaton R23-190 Rear Differential for a Peterbilt 579 $375 USD (USED) Eaton R23-190 Ratio: 2.53 Side Gear Splines: 46 W/ Locker: NO Cast#: Could Not Verify Ref# N/A ConditionUsedFits To Make(s)PeterbiltFits To Model(s)579Part NumberN/AStock Number25857893 MLS Number13790523CategoryDifferentials, Rear Last Updated12/31/2025 LocationSioux Falls, SD, US Sold ByVander Haag's Inc. (855) 370-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 0 Photos View 0 Videos 2020 Meritor MR2014X Rear Differential for a Peterbilt 579 $360 USD (USED) Meritor MR2014X Ratio: 2.64 Side Gear Splines: 41 W/ Locker: NO Cast#: 3200F2216 Ref# MR2014X3MFRNN24-264 ConditionUsedFits To Make(s)PeterbiltFits To Model(s)579Part NumberMR2014X3MFRNN24-264Stock Number25890891 MLS Number13974661CategoryDifferentials, Rear Last Updated11/10/2025 LocationSioux Falls, SD, US Sold ByVander Haag's Inc. (855) 370-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 0 Photos View 0 Videos 2017 Meritor RS23160 Rear Differential for a Peterbilt 579 $1,156 USD (USED) Meritor RS23160 Ratio: 3.07 Side Gear Splines: 46 W/ Locker: YES Cast#: 3200.S-1891 Ref# 3200-S-1891 ConditionUsedFits To Make(s)PeterbiltFits To Model(s)579Part Number3200-S-1891Stock Number25866895 MLS Number13826610CategoryDifferentials, Rear Last Updated9/22/2025 LocationKansas City, MO, US Sold ByVander Haag's Inc. (855) 370-___ 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
View 0 Photos View 0 Videos Meritor-Rockwell MX14 Rear Differential for a 2015 Peterbilt 579 Contact for price MERITOR MX14 3.70 RATIO 40000 LBS NO LOCKS, Ratio: 3.70 ConditionUsedRear End3.70 ratioFits To Make(s)PeterbiltFits To Model(s)579Will Fit Year(s)2015Stock Number3364-PETE-3 MLS Number13343932CategoryDifferentials, Rear Last Updated3/7/2025 LocationSTURGEON COUNTY, AB, Canada Sold ByBadger Truck Parts Ltd. (855) 624-___ SHOWNUMBERCall Seller Email Seller Save More Info
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 Updated5/1/2024 LocationCrandall, TX, US Sold ByTim Jordan's Truck Parts Inc. (833) 359-___ SHOWNUMBERCall Seller Email Seller Save More Info