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Detroit DA-RT-40.0-4 Rear Differentials For Sale

Browse Detroit DA-RT-40.0-4 Rear Differentials on MyLittleSalesman.com and compare listings with prices from $900 to $2,395. Sellers include Holst Truck Parts, Rocky Mountain Truck Parts, CRG Heavy Truck Parts, and more. Filter by condition, price, or year to quickly narrow down to the right Detroit DA-RT-40.0-4 Rear Differential.
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DA-RT-40.0-4 (31)
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Showing 1 - 25 of 31 Rear Differential Listings

1 - 25 of 31 listings
1 - 25 of 31 listings
Detroit DA-RT-40.0-4 Rear Differential for a 2014 Freightliner Cascadia 125

Detroit DA-RT-40.0-4 Rear Differential for a 2014 Freightliner Cascadia 125

Recently Updated
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DART400 RR 2.53 INSPECTED IN OUR GEAR SHOP 90 DAY WARRANTY, Ratio: 2.53
ConditionUsed
Rear End2.53 ratio
Fits To Make(s)Freightliner
Fits To Model(s)Cascadia 125
Will Fit Year(s)2014
Stock Number82625-2
MLS Number13784451
CategoryDifferentials, Rear
Last Updated5/15/2026
Location
Ucon, ID, US
Sold By
Holst Truck Parts
(833) 541-___  SHOW
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Holst Truck Parts
Detroit DA-RT-40.0-4 Rear Differential for a 2022 Freightliner Cascadia 126

Detroit DA-RT-40.0-4 Rear Differential for a 2022 Freightliner Cascadia 126

Recently Updated
$1,895 USD
DART400 2.85 REAR, LOW MILE, WILL INSPECT IN OUR GEAR SHOP, 90 DAY WARRANTY, Ratio: 2.85
ConditionUsed
Rear End2.85 ratio
Fits To Make(s)Freightliner
Fits To Model(s)Cascadia 126
Will Fit Year(s)2022
Part NumberDART400
Stock Number61023-18
MLS Number13491626
CategoryDifferentials, Rear
Last Updated5/15/2026
Location
Ucon, ID, US
Sold By
Holst Truck Parts
(833) 541-___  SHOW
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Holst Truck Parts
Detroit DA-RT-40.0-4 Rear Differential for a 2022 Freightliner Cascadia 126

Detroit DA-RT-40.0-4 Rear Differential for a 2022 Freightliner Cascadia 126

Recently Updated
$1,895 USD
DART400 REAR 3.08, 132K MILES, INSPECTED IN OUR GEAR SHOP, 90 DAY WARRANTY, Ratio: 3.08
ConditionUsed
Rear End3.08 ratio
Fits To Make(s)Freightliner
Fits To Model(s)Cascadia 126
Will Fit Year(s)2022
Stock Number80324-4
MLS Number13043662
CategoryDifferentials, Rear
Last Updated5/15/2026
Location
Ucon, ID, US
Sold By
Holst Truck Parts
(833) 541-___  SHOW
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Holst Truck Parts
Detroit DA-RT-40.0-4 Rear Differential for a 2024 Freightliner Cascadia 126

Detroit DA-RT-40.0-4 Rear Differential for a 2024 Freightliner Cascadia 126

Recently Updated
$2,395 USD
DART400-4S LATE MODEL 3.23 LOCKER, 17K MILES, INSPECTED IN OUR GEAR SHOP, 90 DAY WARRANTY, Ratio: 3.23
ConditionUsed
Rear End3.23 ratio
Fits To Make(s)Freightliner
Fits To Model(s)Cascadia 126
Will Fit Year(s)2024
Stock Number61924-4
MLS Number12948896
CategoryDifferentials, Rear
Last Updated5/15/2026
Location
Ucon, ID, US
Sold By
Holst Truck Parts
(833) 541-___  SHOW
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Holst Truck Parts
Detroit DA-RT-40.0-4 Rear Differential for a 2024 Freightliner Cascadia 126

Detroit DA-RT-40.0-4 Rear Differential for a 2024 Freightliner Cascadia 126

Recently Updated
$2,085 USD
DART400 REAR 2.85 LOW MILE, INSPECTED IN OUR GEAR SHOP, 90 DAY WARRANTY, Ratio: 2.85
ConditionUsed
Rear End2.85 ratio
Fits To Make(s)Freightliner
Fits To Model(s)Cascadia 126
Will Fit Year(s)2024
Stock Number22124-12
MLS Number12685298
CategoryDifferentials, Rear
Last Updated5/15/2026
Location
Ucon, ID, US
Sold By
Holst Truck Parts
(833) 541-___  SHOW
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Holst Truck Parts
Detroit DA-RT-40.0-4 Rear Differential for a 2021 Freightliner Cascadia 126

Detroit DA-RT-40.0-4 Rear Differential for a 2021 Freightliner Cascadia 126

Recently Updated
$1,895 USD
DART400 REAR 2.85 INSPECTED IN OUR GEAR SHOP, 90 DAY WARRANTY, Ratio: 2.85
ConditionUsed
Rear End2.85 ratio
Fits To Make(s)Freightliner
Fits To Model(s)Cascadia 126
Will Fit Year(s)2021
Stock Number20824-4
MLS Number12649988
CategoryDifferentials, Rear
Last Updated5/15/2026
Location
Ucon, ID, US
Sold By
Holst Truck Parts
(833) 541-___  SHOW
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Holst Truck Parts
Detroit DA-RT-40.0-4 Rear Differential for a 2017 Freightliner Cascadia 125

Detroit DA-RT-40.0-4 Rear Differential for a 2017 Freightliner Cascadia 125

Recently Updated
$1,895 USD
DART40 RR 2.85 INSPECTED IN OUR GEAR SHOP 90 DAY WARRANTY, Ratio: 2.85
ConditionUsed
Rear End2.85 ratio
Fits To Make(s)Freightliner
Fits To Model(s)Cascadia 125
Will Fit Year(s)2017
Stock Number70722-13
MLS Number12137354
CategoryDifferentials, Rear
Last Updated5/15/2026
Location
Ucon, ID, US
Sold By
Holst Truck Parts
(833) 541-___  SHOW
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Holst Truck Parts
Detroit DA-RT-40.0-4 Rear Differential for a 2020 Freightliner Cascadia 126

Detroit DA-RT-40.0-4 Rear Differential for a 2020 Freightliner Cascadia 126

Recently Updated
$2,085 USD
DART400 RR 2.85 INSPECTED IN OUR GEAR SHOP 90 DAY WARRANTY 380K MILES, Ratio: 2.85
ConditionUsed
Rear End2.85 ratio
Fits To Make(s)Freightliner
Fits To Model(s)Cascadia 126
Will Fit Year(s)2020
Stock Number30923-9
MLS Number11946354
CategoryDifferentials, Rear
Last Updated5/15/2026
Location
Ucon, ID, US
Sold By
Holst Truck Parts
(833) 541-___  SHOW
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Holst Truck Parts
Detroit DA-RT-40.0-4 Rear Differential for a 2019 Freightliner Cascadia 126

Detroit DA-RT-40.0-4 Rear Differential for a 2019 Freightliner Cascadia 126

Recently Updated
$1,895 USD
DART 400 2.85 RR INSPECTED IN OUR GEAR SHOP 90 DAY WARRANTY, Ratio: 2.85
ConditionUsed
Rear End2.85 ratio
Fits To Make(s)Freightliner
Fits To Model(s)Cascadia 126
Will Fit Year(s)2019
Stock Number11923-10
MLS Number11841073
CategoryDifferentials, Rear
Last Updated5/15/2026
Location
Ucon, ID, US
Sold By
Holst Truck Parts
(833) 541-___  SHOW
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Holst Truck Parts
Detroit DA-RT-40.0-4 Rear Differential for a 2015 Freightliner Cascadia Evolution

Detroit DA-RT-40.0-4 Rear Differential for a 2015 Freightliner Cascadia Evolution

Recently Updated
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AXLE HAS PILOT LUG'S AND ABS MILES 388686, Ratio: 241
ConditionUsed
Rear End2.41 ratio
Fits To Make(s)Freightliner
Fits To Model(s)Cascadia Evolution
Will Fit Year(s)2015
Stock NumberGP5190-5
MLS Number9994304
CategoryDifferentials, Rear
Last Updated5/14/2026
Location
Farr West, UT, US
Sold By
Rocky Mountain Truck Parts
(855) 980-___  SHOW
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Rocky Mountain Truck Parts
Detroit DA-RT-40.0-4 Rear Differential for a 2016 Freightliner Cascadia 125

Detroit DA-RT-40.0-4 Rear Differential for a 2016 Freightliner Cascadia 125

Recently Updated
Contact for price
AXLE HAS PILOT LUG'S AND ABS, Ratio: 241
ConditionUsed
Rear End2.41 ratio
Fits To Make(s)Freightliner
Fits To Model(s)Cascadia 125
Will Fit Year(s)2016
Stock NumberBS2760-3
MLS Number9968786
CategoryDifferentials, Rear
Last Updated5/14/2026
Location
Farr West, UT, US
Sold By
Rocky Mountain Truck Parts
(855) 980-___  SHOW
NUMBERCall Seller
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Rocky Mountain Truck Parts
Detroit DA-RT-40.0-4 Rear Differential for a 2016 Freightliner Cascadia

Detroit DA-RT-40.0-4 Rear Differential for a 2016 Freightliner Cascadia

Recently Updated
Contact for price
AXLE HAS PILOT LUG'S ABS MILES 408459, Ratio: 241
ConditionUsed
Rear End2.41 ratio
Fits To Make(s)Freightliner
Fits To Model(s)Cascadia
Will Fit Year(s)2016
Stock NumberHM6038-4
MLS Number9966893
CategoryDifferentials, Rear
Last Updated5/14/2026
Location
Farr West, UT, US
Sold By
Rocky Mountain Truck Parts
(855) 980-___  SHOW
NUMBERCall Seller
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Rocky Mountain Truck Parts
Detroit DA-RT-40.0-4 Rear Differential for a 2016 Freightliner Cascadia 125

Detroit DA-RT-40.0-4 Rear Differential for a 2016 Freightliner Cascadia 125

Recently Updated
Contact for price
AXLE HAS PILOT LUG'S AND ABS 382091 MILES, Ratio: 241
ConditionUsed
Rear End2.41 ratio
Fits To Make(s)Freightliner
Fits To Model(s)Cascadia 125
Will Fit Year(s)2016
Stock NumberHD8248-4
MLS Number9962287
CategoryDifferentials, Rear
Last Updated5/14/2026
Location
Farr West, UT, US
Sold By
Rocky Mountain Truck Parts
(855) 980-___  SHOW
NUMBERCall Seller
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Rocky Mountain Truck Parts
Detroit DA-RT-40.0-4 Rear Differential for a 2018 Freightliner Cascadia 126

Detroit DA-RT-40.0-4 Rear Differential for a 2018 Freightliner Cascadia 126

$1,499.99 USD
(Used) 2018 Freightliner Cascadia 126, COMPLETE REAR DIFFERENTIAL GEARS ONLY- Part Number: C11-00051-261, Serial Number: 771DDC-A004833T, Make: Detroit, Model: DA-RT-40.0-4, Ratio: 2.85,...
ConditionUsed
Rear End2.85 ratio
Fits To Make(s)Freightliner
Fits To Model(s)Cascadia 126
Will Fit Year(s)2018
Part NumberC11-00051-261
Stock NumberP-108726
MLS Number13752276
CategoryDifferentials, Rear
Last Updated5/13/2026
Location
Elkton, MD, US
Sold By
CRG Heavy Truck Parts
(844) 402-___  SHOW
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CRG Heavy Truck Parts
Detroit DA-RT-40.0-4 Rear Differential for a 2018 Western Star 5700

Detroit DA-RT-40.0-4 Rear Differential for a 2018 Western Star 5700

$1,349.99 USD
(Used) 2018 Western Star 5700, COMPLETE REAR DIFFERENTIAL GEARS ONLY- Part Number: QA6813504750, Serial Number: FZ 227073, Make: Detroit, Model: DA-RT-40.0-4, Ratio: 3.08, Capacity: 20,000...
ConditionUsed
Rear End3.08 ratio
Fits To Make(s)Western Star
Fits To Model(s)5700
Will Fit Year(s)2018
Part NumberQA6813504750
Stock NumberP-72141
MLS Number12630537
CategoryDifferentials, Rear
Last Updated5/13/2026
Location
Elkton, MD, US
Sold By
CRG Heavy Truck Parts
(844) 402-___  SHOW
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CRG Heavy Truck Parts
Detroit DA-RT-40.0-4 Rear Differential for a 2016 Freightliner Cascadia 125

Detroit DA-RT-40.0-4 Rear Differential for a 2016 Freightliner Cascadia 125

Contact for price
(Used) 2016 Freightliner Cascadia 125, COMPLETE REAR DIFFERENTIAL GEARS ONLY- Part Number: R6813510805, Serial Number: 771AAC-A176500T, Make: Detroit, Model: DA-RT-40.0-4, Ratio: 3.42,...
ConditionUsed
Rear End3.42 ratio
Fits To Make(s)Freightliner
Fits To Model(s)Cascadia 125
Will Fit Year(s)2016
Part NumberR6813510805
Stock NumberP-87301
MLS Number13089854
CategoryDifferentials, Rear
Last Updated5/13/2026
Location
Elkton, MD, US
Sold By
CRG Heavy Truck Parts
(844) 402-___  SHOW
NUMBERCall Seller
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CRG Heavy Truck Parts
Detroit DA-RT-40.0-4 Rear Differential for a 2018 Freightliner Cascadia 126

Detroit DA-RT-40.0-4 Rear Differential for a 2018 Freightliner Cascadia 126

Contact for price
Detroit RT40-4N Rear Rear Differential Assembly 3.08 Ratio - Capacity: 20,000 lbs. - Axle Housing Model: QA6813504730 - Hub to Hub - Used - May have some cosmetic blemishes (see photos). Got...
ConditionUsed
Rear End3.08 ratio
Fits To Make(s)Freightliner
Fits To Model(s)Cascadia 126
Will Fit Year(s)2018
Part Number771AAC
Stock NumberFR-0787-8
MLS Number12179253
CategoryDifferentials, Rear
Last Updated5/14/2026
Location
York, ON, Canada
Sold By
Lomoca Inc.
(833) 835-___  SHOW
NUMBERCall Seller
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Lomoca Inc.
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