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

Browse Detroit DA-RT-40.0-4S Rear Differentials on MyLittleSalesman.com and compare listings with prices from $600 to $5,750. Sellers include Garabedian Equipment, Holst Truck Parts, Badger Truck Parts Ltd, and more. Filter by condition, price, or year to quickly narrow down to the right Detroit DA-RT-40.0-4S Rear Differential.
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DA-RT-40.0-4S (17)
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Showing 1 - 17 of 17 Rear Differential Listings

1 - 17 of 17 listings
1 - 17 of 17 listings
Detroit DA-RT-40.0-4S Rear Differential for a Unmarked N/A

Detroit DA-RT-40.0-4S Rear Differential for a Unmarked N/A

Recently Updated
$900 USD
DA-RT-40.0-4 (RT40-NFD) Rear - 2.85 Ratio - Core - Grade C - Blown Side Gear Pinions, Ring Gear Carrier Cracked.
ConditionUsed
Rear End2.85 ratio
Fits To Make(s)Unmarked
Fits To Model(s)N/A
Stock Number4539290
MLS Number13892979
CategoryDifferentials, Rear
Last Updated8/11/2026
Location
Fresno, CA, US
Sold By
Garabedian Equipment
(855) 794-___  SHOW
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Garabedian Equipment
Detroit DA-RT-40.0-4S Rear Differential for a Freightliner Cascadia 126

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

$1,500 USD
Core - DA-RT-40.0-4S HH (RT40-NFD Rear) - 2.85 Ratio - Grade D - broken gear set, burnt pinion bearings, good case. core unit sold as-is.
ConditionUsed
Rear End2.85 ratio
Fits To Make(s)FREIGHTLINER
Fits To Model(s)Cascadia 126
Stock Number28877
MLS Number14319900
CategoryDifferentials, Rear
Last Updated7/31/2026
Location
Fresno, CA, US
Sold By
Garabedian Equipment
(855) 794-___  SHOW
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Garabedian Equipment
Detroit DA-RT-40.0-4S Rear Differential for a 2013 Freightliner Cascadia 125

Detroit DA-RT-40.0-4S Rear Differential for a 2013 Freightliner Cascadia 125

$895 USD
GOOD INSPECTED TAKEOUT,90 DAY WARRANTY EXCHANGE, Core Charge: 250, Ratio: 342
ConditionUsed
Rear End3.42 ratio
Fits To Make(s)Freightliner
Fits To Model(s)Cascadia 125
Will Fit Year(s)2013
Part NumberART40
Stock Number60225-3
MLS Number13667997
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-40.0-4S Rear Differential for a 2020 Freightliner Cascadia 126

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

Contact for price
2020 FRTLR CASCADIA DETROIT DA-RT-40.0-4S REAR, 3.23 RATIO, DOUBLE LOCKS, AIRLINER SUSPENSION, 52" SPREAD,ABS, 40000 LBS, Serial#: NA, Ratio: 3.23, Casting#: NA
ConditionUsed
Rear End3.23 ratio
Fits To Make(s)Freightliner
Fits To Model(s)Cascadia 126
Will Fit Year(s)2020
Stock Number3762-FRTLR-4
MLS Number13348360
CategoryDifferentials, Rear
Last Updated5/13/2026
Location
STURGEON COUNTY, AB, Canada
Sold By
Badger Truck Parts Ltd.
(855) 624-___  SHOW
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Badger Truck Parts Ltd.
Detroit DA-RT-40.0-4S Rear Differential for a 2020 Freightliner Cascadia 126

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

$2,749.97 USD
(Core) 2020 Freightliner Cascadia 126, COMPLETE REAR DIFFERENTIAL GEARS ONLY- Part Number: A775350 1230, Serial Number: DDC19FZ 462653, Make: Detroit, Model: DART4004S, Capacity: 20,000 Lbs,...
ConditionUsed
Rear End3.08 ratio
Fits To Make(s)Freightliner
Fits To Model(s)Cascadia 126
Will Fit Year(s)2020
Part NumberA775350 1230
Stock NumberP-66171
MLS Number12484265
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-40.0-4S Rear Differential for a 2022 Freightliner Cascadia 126

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

Contact for price
(Used) 2022 Freightliner Cascadia 126, REAR DIFFERENTIAL GEARS ONLY- Part Number: C11-00051-620, Serial Number: 771195B0245935, Make: Detroit, Model: DA-RT-40.0-4S, Ratio: 2.85, Capacity: 20...
ConditionUsed
Rear End2.85 ratio
Fits To Make(s)Freightliner
Fits To Model(s)Cascadia 126
Will Fit Year(s)2022
Part NumberC11-00051-620
Stock NumberP-499430
MLS Number14232068
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-40.0-4S Rear Differential for a Freightliner Cascadia 126

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

$1,500 USD
Core - DA-RT40.0-4S (RT40-NFD Rear) - 2.85 Ratio - grade c - rebuildable - pited bearings, gearset looks good. core unit sold as is.
ConditionUsed
Rear End2.85 ratio
Fits To Make(s)Freightliner
Fits To Model(s)Cascadia 126
Stock Number29475
MLS Number14318356
CategoryDifferentials, Rear
Last Updated4/17/2026
Location
Fresno, CA, US
Sold By
Garabedian Equipment
(855) 794-___  SHOW
NUMBERCall Seller
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Garabedian Equipment
Detroit DA-RT-40.0-4S Rear Differential for a Freightliner Cascadia 126

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

$900 USD
DA-RT-40.0-4S Rear (RT40-NFD) - 2.85 Ratio - Core - Grade C - Rebuildable - Missing Yoke, Lower Pinion Bearings Worn, Good Gearset. CORE UNIT SOLD AS-IS
ConditionUsed
Rear End2.85 ratio
Fits To Make(s)FREIGHTLINER
Fits To Model(s)Cascadia 126
Stock Number28261
MLS Number14100119
CategoryDifferentials, Rear
Last Updated4/14/2026
Location
Fresno, CA, US
Sold By
Garabedian Equipment
(855) 794-___  SHOW
NUMBERCall Seller
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Garabedian Equipment
Detroit DA-RT-40.0-4S Rear Differential for a Freightliner Cascadia 116 Day Cab

2020 Detroit DA-RT-40.0-4S Rear Differential for a Freightliner Cascadia 116 Day Cab

$1,500 USD
DA-RT-40.0-4S (RT40-NFD) - 3.23 Ratio - Pullout - Grade A- Unit In Good Condition.
ConditionUsed
Rear End3.23 ratio
Fits To Make(s)FREIGHTLINER
Fits To Model(s)Cascadia 116 Day Cab
Stock Number4193-6
MLS Number13983816
CategoryDifferentials, Rear
Last Updated4/18/2026
Location
Fresno, CA, US
Sold By
Garabedian Equipment
(855) 794-___  SHOW
NUMBERCall Seller
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Garabedian Equipment
Detroit DA-RT-40.0-4S Rear Differential for a Unmarked N/A

Detroit DA-RT-40.0-4S Rear Differential for a Unmarked N/A

$600 USD
DA-RT40.0-4S (RT40-NFD Rear) - 2.85 Ratio - Core - Grade D - Ring Pinion Have Broken Teeth. P/N C11-00051-620, S/N 771195B190965. CORE UNIT SOLD AS-IS
ConditionUsed
Rear End2.85 ratio
Fits To Make(s)Unmarked
Fits To Model(s)N/A
Stock Number4540029
MLS Number13894889
CategoryDifferentials, Rear
Last Updated4/14/2026
Location
Fresno, CA, US
Sold By
Garabedian Equipment
(855) 794-___  SHOW
NUMBERCall Seller
Email Seller
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Garabedian Equipment
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