Detroit Rear Differentials For Sale

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2016 Detroit RT40-NFD Rear Differential for a Freightliner Cascadia

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$450 USD

(USED) Detroit RT34.0-4 Ratio: 3.23 Side Gear Splines: 40 W/ Locker: NO Cast#: R6813510805

Condition	Used
Fits To Make(s)	Freightliner
Fits To Model(s)	CASCADIA
Stock Number	25539643
MLS Number	12435149
Category	Differentials, Rear
Last Updated	9/26/2026
Location	Kansas City, MO, US
Sold By	Vander Haag's Inc.

(833) 359-___ SHOW
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2019 Detroit RT40-NFD Rear Differential for a Freightliner CASCADIA 125

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USED DETROIT RT40-NFD REAR REAR DIFFERENTIAL ASSY/3.08 RATIO

Condition	Used
Rear End	3.08 ratio
Fits To Make(s)	FREIGHTLINER
Fits To Model(s)	CASCADIA 125
Stock Number	88853
MLS Number	12834175
Category	Differentials, Rear
Last Updated	9/27/2026
Location	Crandall, TX, US
Sold By	Tim Jordan's Truck Parts Inc.

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2021 Detroit RT40-NFD Rear Differential for a Freightliner CASCADIA 126

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USED DETROIT RT40-NFD REAR REAR DIFFERENTIAL/2.85

Condition	Used
Rear End	2.85 ratio
Fits To Make(s)	FREIGHTLINER
Fits To Model(s)	CASCADIA 126
Stock Number	98276
MLS Number	13279756
Category	Differentials, Rear
Last Updated	9/27/2026
Location	Crandall, TX, US
Sold By	Tim Jordan's Truck Parts Inc.

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

Recently Updated

$1,500 USD

Detroit DA-RT-40.0-4T - Rear Rear - 2.85 Ratio - Pullout - grade A - C11-00051-258, s/n 77119580045386.

Condition	Used
Rear End	2.85 ratio
Fits To Make(s)	FREIGHTLINER
Fits To Model(s)	Cascadia 126
Stock Number	4490-3
MLS Number	14397828
Category	Differentials, Rear
Last Updated	9/25/2026
Location	Fresno, CA, US
Sold By	Garabedian Equipment

2022 Detroit RTL40-NFDRR285 Rear Differential

Recently Updated

$2,295.16 USD

MILEAGE - 487,177, LOCKER

Condition	Used
Rear End	2.85 ratio
Fits To Make(s)	DETROIT
Fits To Model(s)	RTL40-NFDRR285
Stock Number	2696191
MLS Number	14598713
Category	Differentials, Rear
Last Updated	9/24/2026
Location	Jackson, MS, US
Sold By	LKQ Heavy Truck

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

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(Used) 2019 Freightliner Cascadia 126, REAR DIFFERENTIAL GEARS ONLY- Part Number: C11-00051-621, Serial Number: 771195A0114320, Make: Detroit, Model: RT40-NFD-N, Ratio: 2.16, Capacity:...

Condition	Used
Rear End	2.16 ratio
Fits To Make(s)	Freightliner
Fits To Model(s)	Cascadia 126
Will Fit Year(s)	2019
Part Number	C11-00051-621
Stock Number	P-510994
MLS Number	14534770
Category	Differentials, Rear
Last Updated	9/23/2026
Location	Elkton, MD, US
Sold By	CRG Heavy Truck Parts

2019 Detroit RT40-NFDRR285 Rear Differential

$1,995.16 USD

OIL WAS CLEAN LOOKS NICE

Condition	Used
Rear End	2.85 ratio
Fits To Make(s)	DETROIT
Fits To Model(s)	RT40-NFDRR285
Stock Number	2599133
MLS Number	14102393
Category	Differentials, Rear
Last Updated	9/19/2026
Location	Wykoff, MN, US
Sold By	LKQ Heavy Truck

2014 Detroit DARS-17.5-4R522 Rear Differential

$1,995.16 USD

Condition	Used
Rear End	5.22 ratio
Fits To Make(s)	DETROIT
Fits To Model(s)	DARS-17.5-4R522
Stock Number	2656650
MLS Number	14410184
Category	Differentials, Rear
Last Updated	9/19/2026
Location	Athens, GA, US
Sold By	LKQ Heavy Truck

Detroit RT40-NFD Rear Differential for a 2021 Freightliner Cascadia 126

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(Used) 2021 Freightliner Cascadia 126, REAR DIFFERENTIAL GEARS ONLY- Part Number: C11-00051-618, Serial Number: 771195B0160106, Make: Detroit, Model: RT40-NFD, Ratio: 2.41, Capacity: 20,000...

Condition	Used
Rear End	2.41 ratio
Fits To Make(s)	Freightliner
Fits To Model(s)	Cascadia 126
Will Fit Year(s)	2021
Part Number	C11-00051-618
Stock Number	P-499331
MLS Number	14231950
Category	Differentials, Rear
Last Updated	9/19/2026
Location	Elkton, MD, US
Sold By	CRG Heavy Truck Parts

Detroit RS20-4 Rear Differential for a 2019 Freightliner M2 106

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(Used) 2019 Freightliner M2 106, COMPLETE DIFFERENTIAL GEARS ONLY- Part Number: C11-00008-188, Serial Number: 742818B0011586, Make: Detroit, Model: RS20-4, Ratio: 5.22, Capacity: 21,000 Lbs,...

Condition	Used
Rear End	5.22 ratio
Fits To Make(s)	Freightliner
Fits To Model(s)	M2 106
Will Fit Year(s)	2019
Part Number	C11-00008-188
Stock Number	P-105143
MLS Number	13654963
Category	Differentials, Rear
Last Updated	9/19/2026
Location	Elkton, MD, US
Sold By	CRG Heavy Truck Parts

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

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DA-RT40-4.0 - Rear Rear - Ratio - Pullout - DIFF ONLY.

Condition	Used
Fits To Make(s)	FREIGHTLINER
Fits To Model(s)	Cascadia 126
Stock Number	4491-3
MLS Number	14379304
Category	Differentials, Rear
Last Updated	9/15/2026
Location	Fresno, CA, US
Sold By	Garabedian Equipment

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

$900 USD

Core - DA-RT-40.0-4T - 3.08 Ratio

Condition	Used
Rear End	3.08 ratio
Fits To Make(s)	FREIGHTLINER
Fits To Model(s)	Cascadia 126
Stock Number	36082
MLS Number	14541717
Category	Differentials, Rear
Last Updated	9/24/2026
Location	Fresno, CA, US
Sold By	Garabedian Equipment

2023 Detroit DA-RT-40.0-4S Rear Differential for a Freightliner Cascadia 126

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DA-RT40.0-4S - Rear Rear - 2.64 Ratio - Pullout - DIFF ONLY.

Condition	Used
Rear End	2.64 ratio
Fits To Make(s)	FREIGHTLINER
Fits To Model(s)	Cascadia 126
Stock Number	4468-3
MLS Number	14347655
Category	Differentials, Rear
Last Updated	9/11/2026
Location	Fresno, CA, US
Sold By	Garabedian Equipment

2017 Detroit RT40-NFDRR285 Rear Differential

$1,995.16 USD

MILEAGE - 116,233

Condition	Used
Rear End	2.85 ratio
Fits To Make(s)	DETROIT
Fits To Model(s)	RT40-NFDRR285
Stock Number	2684004
MLS Number	14520919
Category	Differentials, Rear
Last Updated	9/17/2026
Location	Jackson, MS, US
Sold By	LKQ Heavy Truck

Detroit RS21-4 Rear Differential for a 2022 Freightliner M2 106

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(Used) 2022 Freightliner M2 106, COMPLETE DIFFERENTIAL GEARS ONLY- Part Number: C11-00007-208, Serial Number: 742821B0235160, Make: Detroit, Model: RS21-4, Ratio: 5.56, Capacity: 19,000 Lbs,...

Condition	Used
Rear End	5.56 ratio
Fits To Make(s)	Freightliner
Fits To Model(s)	M2 106
Will Fit Year(s)	2022
Part Number	C11-00007-208
Stock Number	P-102287
MLS Number	13583952
Category	Differentials, Rear
Last Updated	9/3/2026
Location	Elkton, MD, US
Sold By	CRG Heavy Truck Parts

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2022 Detroit RT40.0-4 Rear Differential for a Freightliner 122SD

$1,540 USD

(USED) Detroit DART-400-4N Ratio: 3.58 Side Gear Splines: 40 W/ Locker: NO Cast#: R7753511305

Condition	Used
Fits To Make(s)	Freightliner
Fits To Model(s)	122SD
Stock Number	25748000
MLS Number	13451489
Category	Differentials, Rear
Last Updated	9/3/2026
Location	Winimac, IN, US
Sold By	Vander Haag's Inc.

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.

Condition	Used
Rear End	3.23 ratio
Fits To Make(s)	FREIGHTLINER
Fits To Model(s)	Cascadia 116 Day Cab
Stock Number	4193-6
MLS Number	13983816
Category	Differentials, Rear
Last Updated	9/1/2026
Location	Fresno, CA, US
Sold By	Garabedian Equipment

2022 Detroit RT40-NFDRR285 Rear Differential

$1,995.16 USD

DET RT40, RATIO 2.85,

Condition	Used
Rear End	2.85 ratio
Fits To Make(s)	DETROIT
Fits To Model(s)	RT40-NFDRR285
Stock Number	2571247
MLS Number	13915714
Category	Differentials, Rear
Last Updated	9/1/2026
Location	Easton, MD, US
Sold By	LKQ Heavy Truck

Detroit DA-RT-40.0-4S Rear Differential

$2,500 USD

DA-RT-40.0-4S Rear Rear-2.85 Ratio - Rebuilt - 1 Year Warranty

Quantity	3
Condition	Remanufactured
Rear End	2.85 ratio
Stock Number	DA-RT-40.0-4S-285-R
MLS Number	14363200
Category	Differentials, Rear
Last Updated	9/1/2026
Location	Fresno, CA, US
Sold By	Garabedian Equipment

Detroit DA-RT-40.0-4T Rear Differential

$1,500 USD

Core - DA-RT40.0-4T NFD (RT40-NFD-N Rear) - 2.41 Ratio - Grade C - Rewbuildable - Broken Gear set, Core Unit sold as is.

Condition	Used
Rear End	2.41 ratio
Stock Number	29362
MLS Number	14333246
Category	Differentials, Rear
Last Updated	8/30/2026
Location	Fresno, CA, US
Sold By	Garabedian Equipment

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

$1,500 USD

DA-RT-40.0-4T (RT40-NFD) Rear - 2.16 Ratio - Pullout - Grade A - Baffle has hole, needs to be replaced. Unit Is In Good Condition. DIFF ONLY, HOUSING SOLD SEPARATELY.

Condition	Used
Rear End	2.16 ratio
Fits To Make(s)	FREIGHTLINER
Fits To Model(s)	Cascadia 126
Stock Number	4265-6
MLS Number	13965800
Category	Differentials, Rear
Last Updated	9/4/2026
Location	Fresno, CA, US
Sold By	Garabedian Equipment

Detroit RT40-NFDRR308 Rear Differential

$2,395.16 USD

Condition	Remanufactured
Rear End	3.08 ratio
Fits To Make(s)	DETROIT
Fits To Model(s)	RT40-NFDRR308
Stock Number	2527103
MLS Number	14568665
Category	Differentials, Rear
Last Updated	8/27/2026
Location	Toledo, OH, US
Sold By	LKQ Heavy Truck

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

$2,295 USD

DART400 2.28 RATIO LOCKER, WILL INSPECT IN OUR GEARSHOP, 90 DAY WARRANTY., Axle Spline Count: NA, Serial#: NA, Core Charge: 250.00, Ratio: 2.28

Condition	Used
Fits To Make(s)	Freightliner
Fits To Model(s)	Cascadia 126
Will Fit Year(s)	2018
Part Number	NA
Stock Number	82821-4
MLS Number	14568580
Category	Differentials, Rear
Last Updated	8/27/2026
Location	Ucon, ID, US
Sold By	Holst Truck Parts

Detroit RS20-4N Rear Differential for a 2025 Freightliner B2

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(Used) 2025 Freightliner B2, DIFFERENTIAL GEARS ONLY- Part Number: C11-00008-235, Serial Number: 742821A0305883, Make: Detroit, Model: RS20-4N, Ratio: 6.14, Capacity: 21,000 Lbs, For more...

Condition	Used
Rear End	6.14 ratio
Fits To Make(s)	Freightliner
Fits To Model(s)	B2
Will Fit Year(s)	2025
Part Number	C11-00008-235
Stock Number	P-110474
MLS Number	13798099
Category	Differentials, Rear
Last Updated	8/20/2026
Location	Elkton, MD, US
Sold By	CRG Heavy Truck Parts