Detroit RT40-4N Axles & Differentials For Sale

1 - 25 of 76 listings

Detroit RT40-4N Rear Differential for a 2018 Freightliner M2 106

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(Used) 2018 Freightliner M2 106, REAR DIFFERENTIAL GEARS ONLY- Part Number: C11-00042-031, Serial Number: 771AAC-A233152T, Make: Detroit, Model: RT40-4N, Ratio: 4.78, Capacity: 20,000 Lbs,...

Condition	Used
Rear End	4.78 ratio
Fits To Make(s)	Freightliner
Fits To Model(s)	M2 106
Will Fit Year(s)	2018
Part Number	C11-00042-031
Stock Number	P-509831
MLS Number	14506943
Category	Differentials, Rear
Last Updated	7/25/2026
Location	Elkton, MD, US
Sold By	CRG Heavy Truck Parts

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Detroit RT40-4N Rear Axle Housing for a 2018 Freightliner M2 106

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(Used) 2018 Freightliner M2 106, REAR DIFFERENTIAL HOUSING ONLY- Part Number: C11-00042-031, Serial Number: 771AAC-A233152T, Make: Detroit, Model: RT40-4N, Ratio: 4.78, Capacity: 20,000 Lbs,...

Condition	Used
Fits To Make(s)	Freightliner
Fits To Model(s)	M2 106
Will Fit Year(s)	2018
Part Number	C11-00042-031
Stock Number	P-509829
MLS Number	14506941
Category	Axle Housings, Rear
Last Updated	7/25/2026
Location	Elkton, MD, US
Sold By	CRG Heavy Truck Parts

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Detroit RT40-4N Rear Axle Assembly for a 2018 Freightliner M2 106

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(Used) 2018 Freightliner M2 106, COMPLETE REAR REAR TANDEM- Part Number: C11-00042-031, Serial Number: 771AAC-A233152T, Make: Detroit, Model: RT40-4N, Ratio: 4.78, Capacity: 20,000 Lbs, Hub...

Condition	Used
Rear End	4.78 ratio
Fits To Make(s)	Freightliner
Fits To Model(s)	M2 106
Will Fit Year(s)	2018
Part Number	C11-00042-031
Stock Number	P-509824
MLS Number	14506935
Category	Axle Assemblies, Rear
Last Updated	7/25/2026
Location	Elkton, MD, US
Sold By	CRG Heavy Truck Parts

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Detroit RT40-4N Front Differential for a 2018 Freightliner M2 106

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(Used) 2018 Freightliner M2 106, FRONT DIFFERENTIAL GEARS ONLY- Part Number: C11-00042-031, Serial Number: 771AAC-A233152H, Make: Detroit, Model: RT40-4N, Ratio: 4.78, Capacity: 20,000 Lbs,...

Condition	Used
Rear End	4.78 ratio
Fits To Make(s)	Freightliner
Fits To Model(s)	M2 106
Will Fit Year(s)	2018
Part Number	C11-00042-031
Stock Number	P-509818
MLS Number	14506928
Category	Differentials, Front
Last Updated	7/25/2026
Location	Elkton, MD, US
Sold By	CRG Heavy Truck Parts

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Detroit RT40-4N Rear Axle Housing for a 2018 Freightliner M2 106

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(Used) 2018 Freightliner M2 106, FRONT DIFFERENTIAL HOUSING ONLY- Part Number: C11-00042-031, Serial Number: 771AAC-A233152H, Make: Detroit, Model: RT40-4N, Ratio: 4.78, Capacity: 20,000 Lbs...

Condition	Used
Fits To Make(s)	Freightliner
Fits To Model(s)	M2 106
Will Fit Year(s)	2018
Part Number	C11-00042-031
Stock Number	P-509816
MLS Number	14506926
Category	Axle Housings, Rear
Last Updated	7/25/2026
Location	Elkton, MD, US
Sold By	CRG Heavy Truck Parts

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Detroit RT40-4N Complete Axle-Front Rears for a 2018 Freightliner M2 106

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(Used) 2018 Freightliner M2 106, COMPLETE FRONT REAR TANDEM- Part Number: C11-00042-031, Serial Number: 771AAC-A233152H, Make: Detroit, Model: RT40-4N, Ratio: 4.78, Capacity: 20,000 Lbs, Hub...

Condition	Used
Rear End	4.78 ratio
Fits To Make(s)	Freightliner
Fits To Model(s)	M2 106
Will Fit Year(s)	2018
Part Number	C11-00042-031
Stock Number	P-509813
MLS Number	14506923
Category	Differentials, Front
Last Updated	7/25/2026
Location	Elkton, MD, US
Sold By	CRG Heavy Truck Parts

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Detroit RT40-4N Rear Differential for a 2019 Freightliner Cascadia 126

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(Used) 2019 Freightliner Cascadia 126, REAR DIFFERENTIAL GEARS ONLY- Part Number: C11-00042-751, Serial Number: 771198B0036937, Make: Detroit, Model: RT40-4N, Ratio: 2.85, Capacity: 20,000...

Condition	Used
Rear End	2.85 ratio
Fits To Make(s)	Freightliner
Fits To Model(s)	Cascadia 126
Will Fit Year(s)	2019
Part Number	C11-00042-751
Stock Number	P-508686
MLS Number	14480339
Category	Differentials, Rear
Last Updated	7/13/2026
Location	Elkton, MD, US
Sold By	CRG Heavy Truck Parts

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Detroit RT40-4N Rear Axle Housing for a 2019 Freightliner Cascadia 126

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(Used) 2019 Freightliner Cascadia 126, REAR DIFFERENTIAL HOUSING ONLY- Part Number: C11-00042-751, Serial Number: 771198B0036937, Make: Detroit, Model: RT40-4N, Ratio: 2.85, Capacity: 20,000...

Condition	Used
Fits To Make(s)	Freightliner
Fits To Model(s)	Cascadia 126
Will Fit Year(s)	2019
Part Number	C11-00042-751
Stock Number	P-508685
MLS Number	14480338
Category	Axle Housings, Rear
Last Updated	7/13/2026
Location	Elkton, MD, US
Sold By	CRG Heavy Truck Parts

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Detroit RT40-4N Rear Axle Assembly for a 2019 Freightliner Cascadia 126

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(Used) 2019 Freightliner Cascadia 126, COMPLETE REAR REAR TANDEM- Part Number: C11-00042-751, Serial Number: 771198B0036937, Make: Detroit, Model: RT40-4N, Ratio: 2.85, Capacity: 20,000 Lbs,...

Condition	Used
Rear End	2.85 ratio
Fits To Make(s)	Freightliner
Fits To Model(s)	Cascadia 126
Will Fit Year(s)	2019
Part Number	C11-00042-751
Stock Number	P-508684
MLS Number	14480337
Category	Axle Assemblies, Rear
Last Updated	7/13/2026
Location	Elkton, MD, US
Sold By	CRG Heavy Truck Parts

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Detroit RT40-4N Front Differential for a 2019 Freightliner Cascadia 126

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(Used) 2019 Freightliner Cascadia 126, FRONT DIFFERENTIAL GEARS ONLY- Part Number: C11-00042-751, Serial Number: 771199B0036936, Make: Detroit, Model: RT40-4N, Ratio: 2.85, Capacity: 20,000...

Condition	Used
Rear End	2.85 ratio
Fits To Make(s)	Freightliner
Fits To Model(s)	Cascadia 126
Will Fit Year(s)	2019
Part Number	C11-00042-751
Stock Number	P-508678
MLS Number	14480332
Category	Differentials, Front
Last Updated	7/13/2026
Location	Elkton, MD, US
Sold By	CRG Heavy Truck Parts

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Detroit RT40-4N Rear Axle Housing for a 2019 Freightliner Cascadia 126

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(Used) 2019 Freightliner Cascadia 126, FRONT DIFFERENTIAL HOUSING ONLY- Part Number: C11-00042-751, Serial Number: 771199B0036936, Make: Detroit, Model: RT40-4N, Ratio: 2.85, Capacity:...

Condition	Used
Fits To Make(s)	Freightliner
Fits To Model(s)	Cascadia 126
Will Fit Year(s)	2019
Part Number	C11-00042-751
Stock Number	P-508677
MLS Number	14480331
Category	Axle Housings, Rear
Last Updated	7/13/2026
Location	Elkton, MD, US
Sold By	CRG Heavy Truck Parts

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Detroit RT40-4N Front Differential for a 2019 Freightliner Cascadia 126

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(Used) 2019 Freightliner Cascadia 126, COMPLETE FRONT REAR TANDEM- Part Number: C11-00042-751, Serial Number: 771199B0036936, Make: Detroit, Model: RT40-4N, Ratio: 2.85, Capacity: 20,000 Lbs...

Condition	Used
Rear End	2.85 ratio
Fits To Make(s)	Freightliner
Fits To Model(s)	Cascadia 126
Will Fit Year(s)	2019
Part Number	C11-00042-751
Stock Number	P-508676
MLS Number	14480330
Category	Differentials, Front
Last Updated	7/14/2026
Location	Elkton, MD, US
Sold By	CRG Heavy Truck Parts

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Detroit RT40-4N Rear Differential

$950 USD

2.41,

Condition	Used
Stock Number	REAR-2327
MLS Number	14471116
Category	Differentials, Rear
Last Updated	7/8/2026
Location	LAKEVILLE, MN, US
Sold By	Manders Diesel

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2017 Detroit RT40-4N Rear Axle Housing for a Freightliner Cascadia 125

$850 USD

Alliance Rear Axle Housing, RT40-4N, P/N QA6813504230, 10 Hole Pilot, Air Drum Brakes, Removed from 2017 Airliner Suspension, HOUSING ONLY, DIFF SOLD SEPERATELY

Condition	Used
Fits To Make(s)	FREIGHTLINER
Fits To Model(s)	Cascadia 125
Stock Number	1789-6
MLS Number	13969119
Category	Axle Housings, Rear
Last Updated	6/30/2026
Location	Fresno, CA, US
Sold By	Garabedian Equipment

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Detroit RT40-4N Rear Differential for a 2017 Freightliner Cascadia

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MILES N/A HAS LOCKER, Ratio: 228

Condition	Used
Rear End	2.28 ratio
Fits To Make(s)	Freightliner
Fits To Model(s)	Cascadia
Will Fit Year(s)	2017
Stock Number	JH8652-4
MLS Number	13299272
Category	Differentials, Rear
Last Updated	5/14/2026
Location	Farr West, UT, US
Sold By	Rocky Mountain Truck Parts

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Detroit RT40-4N Rear Differential for a 2020 Freightliner Cascadia

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REAR 21-RN MILES 515407, Ratio: 308

Condition	Used
Rear End	3.08 ratio
Fits To Make(s)	Freightliner
Fits To Model(s)	Cascadia
Will Fit Year(s)	2020
Stock Number	KP5078-5
MLS Number	13249809
Category	Differentials, Rear
Last Updated	5/14/2026
Location	Farr West, UT, US
Sold By	Rocky Mountain Truck Parts

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

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(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,...

Condition	Used
Fits To Make(s)	Western Star
Fits To Model(s)	5700
Will Fit Year(s)	2018
Part Number	C11-00042-143
Stock Number	P-501132
MLS Number	14273820
Category	Axle Housings, Rear
Last Updated	5/13/2026
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

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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,...

Condition	Used
Rear End	3.08 ratio
Fits To Make(s)	Western Star
Fits To Model(s)	5700
Will Fit Year(s)	2018
Part Number	C11-00042-143
Stock Number	P-501133
MLS Number	14273821
Category	Differentials, Front
Last Updated	7/11/2026
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

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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...

Condition	Used
Rear End	3.08 ratio
Fits To Make(s)	Western Star
Fits To Model(s)	5700
Will Fit Year(s)	2018
Part Number	C11-00042-143
Stock Number	P-501136
MLS Number	14273824
Category	Axle Assemblies, Rear
Last Updated	5/13/2026
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

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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,...

Condition	Used
Fits To Make(s)	Western Star
Fits To Model(s)	5700
Will Fit Year(s)	2018
Part Number	C11-00042-143
Stock Number	P-501137
MLS Number	14273825
Category	Axle Housings, Rear
Last Updated	6/21/2026
Location	Elkton, MD, US
Sold By	CRG Heavy Truck Parts

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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,...

Condition	Used
Rear End	3.08 ratio
Fits To Make(s)	Western Star
Fits To Model(s)	5700
Will Fit Year(s)	2018
Part Number	C11-00042-143
Stock Number	P-501138
MLS Number	14273826
Category	Differentials, Rear
Last Updated	6/22/2026
Location	Elkton, MD, US
Sold By	CRG Heavy Truck Parts

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Detroit RT40-4N Rear Axle Assembly for a 2016 Western Star 5700

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Detroit DA-RT-40.0-4 HT Tandem Cutoff - Used - Ratio: 3.31 - Drum Brakes - Air Bag Suspension - 40,000 LBS Capacity, Power Divider is Locker, Part Number: 771AAC - RT40-4N Rear Rear...

Condition	Used
Fits To Make(s)	Western Star
Fits To Model(s)	5700
Will Fit Year(s)	2016
Part Number	DA-RT-40.4 HT
Stock Number	WS-0796-26
MLS Number	12227072
Category	Axle Assemblies, Rear
Last Updated	6/13/2026
Location	York, ON, Canada
Sold By	Lomoca Inc.

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

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(Used) 2014 Freightliner Cascadia 125, COMPLETE REAR REAR TANDEM- Make: Detroit, Model: RT40-4N, Ratio: 3.31, Capacity: 20,000 Lbs, Hub Bolts: 10, Brake Type: Drum Serial Number:...

Condition	Used
Rear End	3.31 ratio
Fits To Make(s)	Freightliner
Fits To Model(s)	Cascadia 125
Will Fit Year(s)	2014
Stock Number	P-42167
MLS Number	11942380
Category	Axle Assemblies, Rear
Last Updated	5/13/2026
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

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(Used) 2014 Freightliner Cascadia 125, REAR DIFFERENTIAL HOUSING ONLY- Make: Detroit, Model: RT40-4N, Ratio: 3.31, Capacity: 20,000 Lbs, Serial Number: 771AAC-A033563T, For more...

Condition	Used
Fits To Make(s)	Freightliner
Fits To Model(s)	Cascadia 125
Will Fit Year(s)	2014
Stock Number	P-42168
MLS Number	11942381
Category	Axle Housings, Rear
Last Updated	5/13/2026
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

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(Used) 2014 Freightliner Cascadia 125, REAR DIFFERENTIAL GEARS ONLY- Make: Detroit, Model: RT40-4N, Ratio: 3.31, Capacity: 20,000 Lbs, Serial Number: 771AAC-A103364T, For more information...

Condition	Used
Rear End	3.31 ratio
Fits To Make(s)	Freightliner
Fits To Model(s)	Cascadia 125
Will Fit Year(s)	2014
Stock Number	P-42170
MLS Number	11942383
Category	Differentials, Rear
Last Updated	5/13/2026
Location	Elkton, MD, US
Sold By	CRG Heavy Truck Parts

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Detroit RT40-4N Axles & Differentials For Sale

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Showing 1 - 25 of 76 Listings