Used Rear Differentials For Sale

Eaton RS454 Rear Differential

$500 USD

Good used Eaton RS454 Rear, Rear Differential Assembly. 5.29 Ratio. 90 day guarantee for swap or refund

Condition	Used
Rear End	5.29 ratio
Fits To Make(s)	EATON
Fits To Model(s)	RS454
Stock Number	Ryd RS454/5.29/41
MLS Number	13585361
Category	Differentials, Rear
Last Updated	1/1/2026
Location	Fitchburg, MA, US
Sold By	Rydemore Heavy Duty Truck Parts

Spicer S135-S Rear Differential

$750 USD

Good used Spicer S135-S rear, rear differential assembly with emergency brake. 4.78 ratio. 90 day guarantee for swap or refund

Condition	Used
Rear End	4.78 ratio
Fits To Make(s)	SPICER
Fits To Model(s)	S135-S
Stock Number	Ryd S-135-S/4.78/36
MLS Number	13585359
Category	Differentials, Rear
Last Updated	1/1/2026
Location	Fitchburg, MA, US
Sold By	Rydemore Heavy Duty Truck Parts

Nissan UD Rear Differential

$600 USD

Good used NissanUD rear, rear differential assembly. 5.14 ratio. 34 spline axles. 90 day guarantee for swap or refund

Condition	Used
Rear End	5.14 ratio
Fits To Make(s)	NISSAN
Fits To Model(s)	UD
Stock Number	Ryd UD/5.14/34
MLS Number	13478981
Category	Differentials, Rear
Last Updated	1/1/2026
Location	Fitchburg, MA, US
Sold By	Rydemore Heavy Duty Truck Parts

Nissan UD Rear Differential

$600 USD

Good used Nissan UD rear, rear differential assembly. 6.17 ratio. 90 day guarantee for swap or refund

Condition	Used
Rear End	6.17 ratio
Fits To Make(s)	NISSAN
Fits To Model(s)	UD
Stock Number	Ryd UD/6.17/42
MLS Number	13478980
Category	Differentials, Rear
Last Updated	1/1/2026
Location	Fitchburg, MA, US
Sold By	Rydemore Heavy Duty Truck Parts

Rockwell RS21230 Rear Differential for a Rockwell RS-21-230

$1,350 USD

Good used Rockwell RS-21-230 2 speed rear, rear differential assembly. 5.86/8.15 ratio. 90 day guarantee for swap or refund

Condition	Used
Fits To Make(s)	ROCKWELL
Fits To Model(s)	RS-21-230
Stock Number	Ryd RS-21-230/5.86-
MLS Number	13478979
Category	Differentials, Rear
Last Updated	1/1/2026
Location	Fitchburg, MA, US
Sold By	Rydemore Heavy Duty Truck Parts

Rockwell SUDD Rear Differential

$1,100 USD

Good used Rockwell SUDD rear, rear differential assembly. 6.38 ratio. 90 day guarantee for swap or refund

Condition	Used
Rear End	6.38 ratio
Fits To Make(s)	ROCKWELL
Fits To Model(s)	SUDD
Stock Number	Ryd SUDD/6.38/46
MLS Number	13426327
Category	Differentials, Rear
Last Updated	1/1/2026
Location	Fitchburg, MA, US
Sold By	Rydemore Heavy Duty Truck Parts

Eaton 21060-S Rear Differential

$500 USD

Good used Eaton 21060-S Rear, Rear Differential Assembly. 6.50 Ratio. 90 day guarantee for swap or refund

Condition	Used
Rear End	6.50 ratio
Fits To Make(s)	EATON
Fits To Model(s)	21060-S
Stock Number	Ryd 21060-S/6.50/39
MLS Number	13363032
Category	Differentials, Rear
Last Updated	1/1/2026
Location	Fitchburg, MA, US
Sold By	Rydemore Heavy Duty Truck Parts

Alliance R21-4N Rear Differential

Price Drop $750 USD

Good used Alliance R21-4N Rear, rear Differential Assembly. 6.14 Ratio. 90 day guarantee for swap or refund

Condition	Used
Rear End	6.14 ratio
Fits To Make(s)	ALLIANCE
Fits To Model(s)	R21-4N
Stock Number	Ryd R21-4N/6.14/46
MLS Number	13363031
Category	Differentials, Rear
Last Updated	1/1/2026
Location	Fitchburg, MA, US
Sold By	Rydemore Heavy Duty Truck Parts

Spicer S23-170 Rear Differential

$1,500 USD

Good used Spicer S23-170 rear, rear differential assembly. 6.83 ratio. 90 day guarantee for swap or refund

Condition	Used
Rear End	6.83 ratio
Fits To Make(s)	SPICER
Fits To Model(s)	S23-170
Stock Number	Ryd S23-170/6.83/46
MLS Number	13363028
Category	Differentials, Rear
Last Updated	1/1/2026
Location	Fitchburg, MA, US
Sold By	Rydemore Heavy Duty Truck Parts

Meritor MS-113 Rear Differential

$850 USD

Good used Meritor MS-113 rear, rear differential assembly. 4.78 ratio. 90 day guarantee for swap or refund

Condition	Used
Rear End	4.78 ratio
Fits To Make(s)	MERITOR
Fits To Model(s)	MS-113
Stock Number	Ryd MS113/4.78/37
MLS Number	13316077
Category	Differentials, Rear
Last Updated	1/1/2026
Location	Fitchburg, MA, US
Sold By	Rydemore Heavy Duty Truck Parts

Eaton 15040-S Rear Differential

$750 USD

Good used Eaton 15040-S Rear Rear Differential Assembly 3.36 Ratio 90 day guarantee for swap or refund

Condition	Used
Rear End	3.36 ratio
Fits To Make(s)	EATON
Fits To Model(s)	15040-S
Stock Number	Ryd 15040-S/3.36/34
MLS Number	13316076
Category	Differentials, Rear
Last Updated	1/1/2026
Location	Fitchburg, MA, US
Sold By	Rydemore Heavy Duty Truck Parts

Spicer S135-SL Rear Differential

$850 USD

Good used Spicer S135-SL rear, rear differential assembly. 4.78 ratio. 90 day guarantee for swap or refund

Quantity	2
Condition	Used
Rear End	4.78 ratio
Fits To Make(s)	SPICER
Fits To Model(s)	S135-SL
Stock Number	Ryd S135-SL/4.78/36
MLS Number	13316074
Category	Differentials, Rear
Last Updated	1/1/2026
Location	Fitchburg, MA, US
Sold By	Rydemore Heavy Duty Truck Parts

Spicer Rear Differential for a Spicer S23-190

Price Drop $1,250 USD

Good used Spicer S23190 rear, rear differential assembly. 2.53 ratio. 90 day guarantee for swap or refund

Condition	Used
Rear End	2.53 ratio
Fits To Make(s)	SPICER
Fits To Model(s)	S23-190
Stock Number	Ryd S23-190/2.53/46
MLS Number	13297072
Category	Differentials, Rear
Last Updated	1/1/2026
Location	Fitchburg, MA, US
Sold By	Rydemore Heavy Duty Truck Parts

Eaton 23105D Rear Differential for a Eaton 23105-D

$1,000 USD

Good used Eaton 231050-D Full locking Rear, Rear Differential Assembly. 6.14 Ratio. 90 day guarantee for swap or refund

Condition	Used
Rear End	6.14 ratio
Fits To Make(s)	EATON
Fits To Model(s)	23105-D
Stock Number	Ryd 23105-D/6.14/36
MLS Number	13274666
Category	Differentials, Rear
Last Updated	1/1/2026
Location	Fitchburg, MA, US
Sold By	Rydemore Heavy Duty Truck Parts

Alliance RT40-4N Rear Differential

$1,100 USD

Good used Alliance R40-4N Rear, rear Differential Assembly. 3.58 Ratio. 90 day guarantee for swap or refund

Condition	Used
Rear End	3.58 ratio
Fits To Make(s)	ALLIANCE
Fits To Model(s)	RT40-4N
Stock Number	Ryd RT-40-4N/3.58/4
MLS Number	13235500
Category	Differentials, Rear
Last Updated	1/1/2026
Location	Fitchburg, MA, US
Sold By	Rydemore Heavy Duty Truck Parts

Rockwell RS17144 Rear Differential for a Rockwell RS-17-144

$500 USD

Good used Rockwell RS-17-144 rear, rear differential assembly with parking brake. 3.90 ratio. 90 day guarantee for swap or refund

Condition	Used
Rear End	3.90 ratio
Fits To Make(s)	ROCKWELL
Fits To Model(s)	RS-17-144
Stock Number	Ryd RS-17-144/3.90/
MLS Number	13235499
Category	Differentials, Rear
Last Updated	1/1/2026
Location	Fitchburg, MA, US
Sold By	Rydemore Heavy Duty Truck Parts

Rockwell RSL-20-145 Rear Differential

$750 USD

Good used Rockwell RSL-20-145 full locking rear, rear differential assembly. 4.11 ratio. 90 day guarantee for swap or refund

Quantity	3
Condition	Used
Rear End	4.11 ratio
Fits To Make(s)	ROCKWELL
Fits To Model(s)	RSL-20-145
Stock Number	Ryd RSL-20-145/4.11
MLS Number	13235498
Category	Differentials, Rear
Last Updated	1/1/2026
Location	Fitchburg, MA, US
Sold By	Rydemore Heavy Duty Truck Parts

Eaton RDP40 Rear Differential

$1,350 USD

Good used Eaton RDP40 Rear, Rear Differential Assembly. 3.55 Ratio. 90 day guarantee for swap or refund

Condition	Used
Rear End	3.55 ratio
Fits To Make(s)	EATON
Fits To Model(s)	RDP40
Stock Number	Ryd RDP40/3.55/41L
MLS Number	13235497
Category	Differentials, Rear
Last Updated	1/1/2026
Location	Fitchburg, MA, US
Sold By	Rydemore Heavy Duty Truck Parts

Rockwell RS20145 Rear Differential for a Rockwell RS-20-145

$500 USD

Good used Rockwell RS-20-145 rear, rear differential assembly. 3.07 Ratio. 90 day guarantee for swap or refund

Condition	Used
Rear End	3.07 ratio
Fits To Make(s)	ROCKWELL
Fits To Model(s)	RS-20-145
Stock Number	Ryd RS-20145/3.07/4
MLS Number	13191714
Category	Differentials, Rear
Last Updated	1/1/2026
Location	Fitchburg, MA, US
Sold By	Rydemore Heavy Duty Truck Parts

Eaton 26105-D Rear Differential

$850 USD

Good used Eaton 261050-D Full locking Rear, Rear Differential Assembly. 5.25 Ratio. 90 day guarantee for swap or refund

Condition	Used
Rear End	5.25 ratio
Fits To Make(s)	EATON
Fits To Model(s)	26105-D
Stock Number	Ryd 26105-D/5.25/36
MLS Number	13191709
Category	Differentials, Rear
Last Updated	1/1/2026
Location	Fitchburg, MA, US
Sold By	Rydemore Heavy Duty Truck Parts

Eaton 21065-S Rear Differential

$500 USD

Good used Eaton 21065-S Rear, Rear Differential Assembly 5.29 Ratio 90 day guarantee for swap or refund

Condition	Used
Rear End	5.29 ratio
Fits To Make(s)	EATON
Fits To Model(s)	21065-S
Stock Number	Ryd 21065-S/5.29/41
MLS Number	13162506
Category	Differentials, Rear
Last Updated	1/1/2026
Location	Fitchburg, MA, US
Sold By	Rydemore Heavy Duty Truck Parts

Spicer J190-S Rear Differential

$750 USD

Good used Spicer J190-S rear, rear differential assembly. 4.78 ratio. 90 day guarantee for swap or refund

Condition	Used
Rear End	4.78 ratio
Fits To Make(s)	SPICER
Fits To Model(s)	J190-S
Stock Number	Ryd J190-S/4.78/39
MLS Number	13162504
Category	Differentials, Rear
Last Updated	1/1/2026
Location	Fitchburg, MA, US
Sold By	Rydemore Heavy Duty Truck Parts

Rockwell RSL-20-145 Rear Differential

$750 USD

Good used Rockwell RSL-20-145 full locking rear, rear differential assembly. 3.55 ratio. 90 day guarantee for swap or refund

Condition	Used
Rear End	3.55 ratio
Fits To Make(s)	ROCKWELL
Fits To Model(s)	RSL-20-145
Stock Number	Ryd RSL-20-145/3.55
MLS Number	13140254
Category	Differentials, Rear
Last Updated	1/1/2026
Location	Fitchburg, MA, US
Sold By	Rydemore Heavy Duty Truck Parts

Rockwell RS19145 Rear Differential for a Rockwell RS-19-145

$500 USD

Good used Rockwell RS-19-145 rear, rear differential assembly. 5.29 ratio. 90 day guarantee for swap or refund

Condition	Used
Rear End	5.29 ratio
Fits To Make(s)	ROCKWELL
Fits To Model(s)	RS-19-145
Stock Number	Ryd RS19-145/5,29/4
MLS Number	12979105
Category	Differentials, Rear
Last Updated	1/1/2026
Location	Fitchburg, MA, US
Sold By	Rydemore Heavy Duty Truck Parts