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Detroit RT40-4N Truck Parts For Sale

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Axles & Differentials (71)   Axle Assemblies, Rear (12)   Axle Housings, Rear (21)   Differentials, Front (19)   Differentials, Rear (19)Brakes (4)   Brake Calipers (4)Frame & Chassis (10)   Front & Rear Cutoffs (Clip Cuts) (10)
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Showing 1 - 25 of 85 Listings

1 - 25 of 85 listings
1 - 25 of 85 listings
Detroit RT40-4N Rear Differential for a 2018 Western Star 5700

Detroit RT40-4N Rear Differential for a 2018 Western Star 5700

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(Used) 2018 Western Star 5700, REAR DIFFERENTIAL GEARS ONLY- Part Number: C11-00042-143, Serial Number: 771AAC-A242503T, Make: Detroit, Model: RT40-4N, Ratio: 3.08, Capacity: 20,000 Lbs,...
ConditionUsed
Rear End3.08 ratio
Fits To Make(s)Western Star
Fits To Model(s)5700
Will Fit Year(s)2018
Part NumberC11-00042-143
Stock NumberP-501138
MLS Number14273826
CategoryDifferentials, Rear
Last Updated3/29/2026
Location
Elkton, MD, US
Sold By
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Detroit RT40-4N Rear Axle Housing for a 2018 Western Star 5700

Detroit RT40-4N Rear Axle Housing for a 2018 Western Star 5700

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(Used) 2018 Western Star 5700, REAR DIFFERENTIAL HOUSING ONLY- Part Number: C11-00042-143, Serial Number: 771AAC-A242503T, Make: Detroit, Model: RT40-4N, Ratio: 3.08, Capacity: 20,000 Lbs,...
ConditionUsed
Fits To Make(s)Western Star
Fits To Model(s)5700
Will Fit Year(s)2018
Part NumberC11-00042-143
Stock NumberP-501137
MLS Number14273825
CategoryAxle Housings, Rear
Last Updated3/29/2026
Location
Elkton, MD, US
Sold By
CRG Heavy Truck Parts
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Detroit RT40-4N Rear Axle Assembly for a 2018 Western Star 5700

Detroit RT40-4N Rear Axle Assembly for a 2018 Western Star 5700

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(Used) 2018 Western Star 5700, COMPLETE REAR REAR TANDEM- Part Number: C11-00042-143, Serial Number: 771AAC-A242503T, Make: Detroit, Model: RT40-4N, Ratio: 3.08, Capacity: 20,000 Lbs, Hub...
ConditionUsed
Rear End3.08 ratio
Fits To Make(s)Western Star
Fits To Model(s)5700
Will Fit Year(s)2018
Part NumberC11-00042-143
Stock NumberP-501136
MLS Number14273824
CategoryAxle Assemblies, Rear
Last Updated3/29/2026
Location
Elkton, MD, US
Sold By
CRG Heavy Truck Parts
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Detroit RT40-4N Front Differential for a 2018 Western Star 5700

Detroit RT40-4N Front Differential for a 2018 Western Star 5700

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(Used) 2018 Western Star 5700, FRONT DIFFERENTIAL GEARS ONLY- Part Number: C11-00042-143, Serial Number: 771AAC-A242503H, Make: Detroit, Model: RT40-4N, Ratio: 3.08, Capacity: 20,000 Lbs,...
ConditionUsed
Rear End3.08 ratio
Fits To Make(s)Western Star
Fits To Model(s)5700
Will Fit Year(s)2018
Part NumberC11-00042-143
Stock NumberP-501133
MLS Number14273821
CategoryDifferentials, Front
Last Updated3/29/2026
Location
Elkton, MD, US
Sold By
CRG Heavy Truck Parts
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Detroit RT40-4N Rear Axle Housing for a 2018 Western Star 5700

Detroit RT40-4N Rear Axle Housing for a 2018 Western Star 5700

Contact for price
(Used) 2018 Western Star 5700, FRONT DIFFERENTIAL HOUSING ONLY- Part Number: C11-00042-143, Serial Number: 771AAC-A242503H, Make: Detroit, Model: RT40-4N, Ratio: 3.08, Capacity: 20,000 Lbs,...
ConditionUsed
Fits To Make(s)Western Star
Fits To Model(s)5700
Will Fit Year(s)2018
Part NumberC11-00042-143
Stock NumberP-501132
MLS Number14273820
CategoryAxle Housings, Rear
Last Updated3/29/2026
Location
Elkton, MD, US
Sold By
CRG Heavy Truck Parts
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Detroit RT40-4N Front Differential for a 2018 Western Star 5700

Detroit RT40-4N Front Differential for a 2018 Western Star 5700

Contact for price
(Used) 2018 Western Star 5700, COMPLETE FRONT REAR TANDEM- Part Number: C11-00042-143, Serial Number: 771AAC-A242503H, Make: Detroit, Model: RT40-4N, Ratio: 3.08, Capacity: 20,000 Lbs, Hub...
ConditionUsed
Rear End3.08 ratio
Fits To Make(s)Western Star
Fits To Model(s)5700
Will Fit Year(s)2018
Part NumberC11-00042-143
Stock NumberP-501131
MLS Number14273819
CategoryDifferentials, Front
Last Updated3/30/2026
Location
Elkton, MD, US
Sold By
CRG Heavy Truck Parts
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Detroit RT40-4N Cutoff for a 2018 Western Star 5700

Detroit RT40-4N Cutoff for a 2018 Western Star 5700

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(Used) 2018 Western Star 5700, COMPLETE TANDEM CUTOFF- Part Number: C11-00042-143, Serial Number: 771AAC-A242503H / 771AAC-A242503T, Make: Detroit, Model: RT40-4N, Ratio: 3.08, Capacity:...
ConditionUsed
Rear End3.08 ratio
Fits To Make(s)Western Star
Fits To Model(s)5700
Will Fit Year(s)2018
Part NumberC11-00042-143
Stock NumberP-501130
MLS Number14273818
CategoryFront & Rear Cutoffs (Clip Cuts)
Last Updated3/30/2026
Location
Elkton, MD, US
Sold By
CRG Heavy Truck Parts
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Detroit RT40-4N Front Differential for a 2016 Western Star 5700

Detroit RT40-4N Front Differential for a 2016 Western Star 5700

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(Used) 2016 Western Star 5700, COMPLETE FRONT REAR TANDEM- Part Number: C11-00042-503, Serial Number: 771AAC-A178020H, Make: Detroit, Model: RT40-4N, Ratio: 3.08, Capacity: 20,000 Lbs, Hub...
ConditionUsed
Rear End3.08 ratio
Fits To Make(s)Western Star
Fits To Model(s)5700
Will Fit Year(s)2016
Part NumberC11-00042-503
Stock NumberP-500745
MLS Number14260685
CategoryDifferentials, Front
Last Updated3/23/2026
Location
Elkton, MD, US
Sold By
CRG Heavy Truck Parts
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Detroit RT40-4N Cutoff for a 2018 Freightliner Cascadia 126

Detroit RT40-4N Cutoff for a 2018 Freightliner Cascadia 126

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(Used) 2018 Freightliner Cascadia 126, COMPLETE TANDEM CUTOFF- Part Number: C11-00042-390, Serial Number: 771AAC-A239971H, 771AAC-A239971T, Make: Detroit, Model: RT40-4N, Ratio: 3.08,...
ConditionUsed
Rear End3.08 ratio
Fits To Make(s)Freightliner
Fits To Model(s)Cascadia 126
Will Fit Year(s)2018
Part NumberC11-00042-390
Stock NumberP-97024
MLS Number13413511
CategoryFront & Rear Cutoffs (Clip Cuts)
Last Updated3/12/2026
Location
Elkton, MD, US
Sold By
CRG Heavy Truck Parts
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Detroit RT40-4N Cutoff for a 2016 Western Star 5700

Detroit RT40-4N Cutoff for a 2016 Western Star 5700

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(Used) 2016 Western Star 5700, TANDEM CUTOFF- Part Number: C11-00042-503, Serial Number: 771AAC-A178020H, 771AAC-A178020T, Make: Detroit, Model: RT40-4N, Ratio: 3.08, Capacity: 20,000 Lbs,...
ConditionUsed
Rear End3.08 ratio
Fits To Make(s)Western Star
Fits To Model(s)5700
Will Fit Year(s)2016
Part NumberC11-00042-503
Stock NumberP-78040
MLS Number12790308
CategoryFront & Rear Cutoffs (Clip Cuts)
Last Updated3/12/2026
Location
Elkton, MD, US
Sold By
CRG Heavy Truck Parts
(844) 402-___  SHOW
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Detroit RT40-4N Cutoff for a 2017 Freightliner Cascadia 125

Detroit RT40-4N Cutoff for a 2017 Freightliner Cascadia 125

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(Used) 2017 Freightliner Cascadia 125, TANDEM CUTOFF- Part Number: C11-00042-734, Serial Number: 771AAC-A210439H, 771AAC-A210439T, Make: Detroit, Model: RT40-4N, Ratio: 2.41, Capacity:...
ConditionUsed
Rear End2.41 ratio
Fits To Make(s)Freightliner
Fits To Model(s)Cascadia 125
Will Fit Year(s)2017
Part NumberC11-00042-734
Stock NumberP-55824
MLS Number12233509
CategoryFront & Rear Cutoffs (Clip Cuts)
Last Updated3/12/2026
Location
Elkton, MD, US
Sold By
CRG Heavy Truck Parts
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Detroit RT40-4N Cutoff for a 2014 Freightliner Cascadia 125

Detroit RT40-4N Cutoff for a 2014 Freightliner Cascadia 125

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(Used) 2014 Freightliner Cascadia 125, TANDEM CUTOFF- Make: Detroit, Model: RT40-4N, Ratio: 3.31, Capacity: 20,000 Lbs, Hub Bolts: 10, Brake Type: Drum, For more information about this...
ConditionUsed
Rear End3.31 ratio
Fits To Make(s)Freightliner
Fits To Model(s)Cascadia 125
Will Fit Year(s)2014
Stock NumberP-42159
MLS Number11936674
CategoryFront & Rear Cutoffs (Clip Cuts)
Last Updated3/12/2026
Location
Elkton, MD, US
Sold By
CRG Heavy Truck Parts
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Detroit RT40-4N Rear Differential for a 2014 Freightliner Cascadia 125

Detroit RT40-4N Rear Differential for a 2014 Freightliner Cascadia 125

Contact for price
(Used) 2014 Freightliner Cascadia 125, REAR DIFFERENTIAL GEARS ONLY- Part Number: C11-00042-045, Serial Number: 771AAC-A112546T, Make: Detroit, Model: RT40-4N, Ratio: 2.53, Capacity: 20,000...
ConditionUsed
Rear End2.53 ratio
Fits To Make(s)Freightliner
Fits To Model(s)Cascadia 125
Will Fit Year(s)2014
Part NumberC11-00042-045
Stock NumberP-498552
MLS Number14166977
CategoryDifferentials, Rear
Last Updated2/27/2026
Location
Elkton, MD, US
Sold By
CRG Heavy Truck Parts
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Detroit RT40-4N Rear Axle Housing for a 2014 Freightliner Cascadia 125

Detroit RT40-4N Rear Axle Housing for a 2014 Freightliner Cascadia 125

Contact for price
(Used) 2014 Freightliner Cascadia 125, REAR DIFFERENTIAL HOUSING ONLY- Part Number: C11-00042-045, Serial Number: 771AAC-A112546T, Make: Detroit, Model: RT40-4N, Ratio: 2.53, Capacity:...
ConditionUsed
Fits To Make(s)Freightliner
Fits To Model(s)Cascadia 125
Will Fit Year(s)2014
Part NumberC11-00042-045
Stock NumberP-498551
MLS Number14166976
CategoryAxle Housings, Rear
Last Updated2/27/2026
Location
Elkton, MD, US
Sold By
CRG Heavy Truck Parts
(844) 402-___  SHOW
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CRG Heavy Truck Parts
Detroit RT40-4N Rear Axle Assembly for a 2014 Freightliner Cascadia 125

Detroit RT40-4N Rear Axle Assembly for a 2014 Freightliner Cascadia 125

Contact for price
(Used) 2014 Freightliner Cascadia 125, COMPLETE REAR REAR TANDEM- Part Number: C11-00042-045, Serial Number: 771AAC-A112546T, Make: Detroit, Model: RT40-4N, Ratio: 2.53, Capacity: 20,000 Lbs...
ConditionUsed
Rear End2.53 ratio
Fits To Make(s)Freightliner
Fits To Model(s)Cascadia 125
Will Fit Year(s)2014
Part NumberC11-00042-045
Stock NumberP-498550
MLS Number14166975
CategoryAxle Assemblies, Rear
Last Updated2/27/2026
Location
Elkton, MD, US
Sold By
CRG Heavy Truck Parts
(844) 402-___  SHOW
NUMBERCall Seller
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CRG Heavy Truck Parts
Detroit RT40-4N Front Differential for a 2014 Freightliner Cascadia 125

Detroit RT40-4N Front Differential for a 2014 Freightliner Cascadia 125

Contact for price
(Used) 2014 Freightliner Cascadia 125, FRONT DIFFERENTIAL GEARS ONLY- Part Number: C11-00042-045, Serial Number: 771AAC-A112546H, Make: Detroit, Model: RT40-4N, Ratio: 2.53, Capacity: 20,000...
ConditionUsed
Rear End2.53 ratio
Fits To Make(s)Freightliner
Fits To Model(s)Cascadia 125
Will Fit Year(s)2014
Part NumberC11-00042-045
Stock NumberP-498546
MLS Number14166970
CategoryDifferentials, Front
Last Updated2/27/2026
Location
Elkton, MD, US
Sold By
CRG Heavy Truck Parts
(844) 402-___  SHOW
NUMBERCall Seller
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CRG Heavy Truck Parts
Detroit RT40-4N Rear Axle Housing for a 2014 Freightliner Cascadia 125

Detroit RT40-4N Rear Axle Housing for a 2014 Freightliner Cascadia 125

Contact for price
(Used) 2014 Freightliner Cascadia 125, FRONT DIFFERENTIAL HOUSING ONLY- Part Number: C11-00042-045, Serial Number: 771AAC-A112546H, Make: Detroit, Model: RT40-4N, Ratio: 2.53, Capacity:...
ConditionUsed
Fits To Make(s)Freightliner
Fits To Model(s)Cascadia 125
Will Fit Year(s)2014
Part NumberC11-00042-045
Stock NumberP-498545
MLS Number14166969
CategoryAxle Housings, Rear
Last Updated2/27/2026
Location
Elkton, MD, US
Sold By
CRG Heavy Truck Parts
(844) 402-___  SHOW
NUMBERCall Seller
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CRG Heavy Truck Parts
Detroit RT40-4N Front Differential for a 2014 Freightliner Cascadia 125

Detroit RT40-4N Front Differential for a 2014 Freightliner Cascadia 125

Contact for price
(Used) 2014 Freightliner Cascadia 125, COMPLETE FRONT REAR TANDEM- Part Number: C11-00042-045, Serial Number: 771AAC-A112546H, Make: Detroit, Model: RT40-4N, Ratio: 2.53, Capacity: 20,000...
ConditionUsed
Rear End2.53 ratio
Fits To Make(s)Freightliner
Fits To Model(s)Cascadia 125
Will Fit Year(s)2014
Part NumberC11-00042-045
Stock NumberP-498544
MLS Number14166968
CategoryDifferentials, Front
Last Updated2/27/2026
Location
Elkton, MD, US
Sold By
CRG Heavy Truck Parts
(844) 402-___  SHOW
NUMBERCall Seller
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CRG Heavy Truck Parts
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