Used Eaton RS404 Rear Differentials For Sale

Your Current Search

Industry
Truck Parts

Top-Category
Axles & Differentials

Category
Differentials, Rear

Manufacturer
Eaton

Model
RS404

Condition
Used

Click the to remove the filter.

Save Search

Email Alert

What's Save Search and Email Alert?

Narrow Your Search

Keyword Search

Search within the selected criteria

Equipment Type

Eaton RS404 Rear Differential

$1,250 USD

REBUILT 1 YEAR WARRANTY

Condition	Used
Rear End	3.36 ratio
Stock Number	23311
MLS Number	10534514
Category	Differentials, Rear
Last Updated	12/15/2025
Location	Douglas, GA, US
Sold By	American Truck Parts, Inc.

(877) 254-___ SHOW
NUMBERCall Seller

Email Seller

Save

More Info

Eaton RS404 Rear Differential

$1,250 USD

REBUILT 12 MONTH WARRANTY

Condition	Used
Rear End	3.55 ratio
Stock Number	21513
MLS Number	10534144
Category	Differentials, Rear
Last Updated	12/15/2025
Location	Douglas, GA, US
Sold By	American Truck Parts, Inc.

(877) 254-___ SHOW
NUMBERCall Seller

Email Seller

Save

More Info

Eaton RS404 Rear Differential

$1,250 USD

REBUILT 12 MONTH WARRANTY

Condition	Used
Rear End	3.70 ratio
Stock Number	20924
MLS Number	10534023
Category	Differentials, Rear
Last Updated	12/15/2025
Location	Douglas, GA, US
Sold By	American Truck Parts, Inc.

(877) 254-___ SHOW
NUMBERCall Seller

Email Seller

Save

More Info

Eaton RS404 Rear Differential

$1,250 USD

1 YEAR WARRANTY

Condition	Used
Rear End	3.70 ratio
Stock Number	19779
MLS Number	10533829
Category	Differentials, Rear
Last Updated	12/15/2025
Location	Douglas, GA, US
Sold By	American Truck Parts, Inc.

(877) 254-___ SHOW
NUMBERCall Seller

Email Seller

Save

More Info

Eaton RS404 Rear Differential, RATIO 3.70

$650 USD

USED EATON RS404 REAR DIFFERENTIAL ASSEMBLY, RATIO 3.70, FOR MORE INFORMATION PLEASE CALL 844-EZ-ENGIN.

Condition	Used
Part Number	RS404, RATIO 3.70
Stock Number	S4100
MLS Number	10149799
Category	Differentials, Rear
Last Updated	4/7/2023
Location	Palmyra, PA, US
Sold By	Boots and Hank's Truck Parts, Inc.

(833) 396-___ SHOW
NUMBERCall Seller

Email Seller

Save

More Info

Eaton RS404 Rear Differential Ratio 3.25

$650 USD

USED EATON RS404 REAR DIFFERENTIAL ASSEMBLY, RATIO 3.25, FOR MORE INFORMATION PLEASE CALL 844-EZ-ENGIN.

Condition	Used
Part Number	RS404, Ratio 3.25
Stock Number	S4098
MLS Number	10149792
Category	Differentials, Rear
Last Updated	4/7/2023
Location	Palmyra, PA, US
Sold By	Boots and Hank's Truck Parts, Inc.

(833) 396-___ SHOW
NUMBERCall Seller

Email Seller

Save

More Info

Eaton RS404 Rear Differential Ratio 2.85

$650 USD

USED EATON RS404 REAR DIFFERENTIAL ASSEMBLY, RATIO 2.85, 30 DAY WARRANTY, FOR MORE INFORMATION PLEASE CALL 844-EZ-ENGINE.

Condition	Used
Part Number	RS404
Stock Number	S091
MLS Number	10134416
Category	Differentials, Rear
Last Updated	4/7/2023
Location	Palmyra, PA, US
Sold By	Boots and Hank's Truck Parts, Inc.

(833) 396-___ SHOW
NUMBERCall Seller

Email Seller

Save

More Info

Eaton RS404 Rear Differential, Ratio 3.90

$650 USD

USED EATON RS404 REAR DIFFERENTIAL, RATIO 3.90.

Condition	Used
Part Number	RS404
Stock Number	S4048
MLS Number	10107808
Category	Differentials, Rear
Last Updated	4/7/2023
Location	Palmyra, PA, US
Sold By	Boots and Hank's Truck Parts, Inc.

(833) 396-___ SHOW
NUMBERCall Seller

Email Seller

Save

More Info

Eaton RS404 Rear Differential

$650 USD

USED EATON RS404 REAR DIFFERENTIAL RATIO 3.55, FOR MORE INFORMATION PLEASE CALL 844-EZ-ENGIN.

Condition	Used
Part Number	RS404 RATIO 3.55
Stock Number	S4058
MLS Number	10092934
Category	Differentials, Rear
Last Updated	4/7/2023
Location	Palmyra, PA, US
Sold By	Boots and Hank's Truck Parts, Inc.

(833) 396-___ SHOW
NUMBERCall Seller

Email Seller

Save

More Info

Eaton RS404 Rear Differential, 3.90 Ratio

$650 USD

USED EATON RS404 REAR DIFFERENTIAL, RATIO 3.90, FOR MORE INFORMATION PLEASE CALL 844-EZ-ENGIN

Condition	Used
Part Number	RS404
Stock Number	S4057
MLS Number	10092334
Category	Differentials, Rear
Last Updated	2/15/2020
Location	Palmyra, PA, US
Sold By	Boots and Hank's Truck Parts, Inc.

(833) 396-___ SHOW
NUMBERCall Seller

Email Seller

Save

More Info

2003 Eaton RS404 Rear Differential for a Freightliner Columbia 120

Newly Listed

$325 USD

(USED) Eaton RS404 Ratio: 3.70 Side Gear Splines: 41 W/ Locker: NO Cast#: VERIFY Ref# S09826

Condition	Used
Fits To Make(s)	Freightliner
Fits To Model(s)	Columbia 120
Part Number	S09826
Stock Number	26049829
MLS Number	14546345
Category	Differentials, Rear
Last Updated	8/16/2026
Location	Des Moines, IA, US
Sold By	Vander Haag's Inc.

(855) 370-___ SHOW
NUMBERCall Seller

Email Seller

Save

More Info

2007 Eaton RS404 Rear Differential for a Freightliner Columbia 120

1998 Eaton RS404 Rear Differential for a Volvo WG

1996 Eaton RS404 Rear Differential for a Freightliner FLD120

2007 Eaton RS404 Rear Differential for a Peterbilt 335

$375 USD

(USED) Eaton RS404 Ratio: 4.88 Side Gear Splines: 41 W/ Locker: NO Cast#: 129351-C

Condition	Used
Fits To Make(s)	Peterbilt
Fits To Model(s)	335
Stock Number	26035359
MLS Number	14533065
Category	Differentials, Rear
Last Updated	8/9/2026
Location	Winimac, IN, US
Sold By	Vander Haag's Inc.

(855) 370-___ SHOW
NUMBERCall Seller

Email Seller

Save

More Info

2001 Eaton RS404 Rear Differential for a Mack CX

$585 USD

(USED) Eaton RS404 Ratio: 3.55 Side Gear Splines: 41 W/ Locker: NO Cast#: 127603

Condition	Used
Fits To Make(s)	Mack
Fits To Model(s)	CX
Stock Number	25988077
MLS Number	14344152
Category	Differentials, Rear
Last Updated	8/8/2026
Location	Des Moines, IA, US
Sold By	Vander Haag's Inc.

(855) 370-___ SHOW
NUMBERCall Seller

Email Seller

Save

More Info

2008 Eaton RS404 Rear Differential for a International Prostar

$585 USD

(USED) Eaton RS404 Ratio: 3.55 Side Gear Splines: 41 W/ Locker: NO Cast#: -

Condition	Used
Fits To Make(s)	International
Fits To Model(s)	Prostar
Stock Number	25980321
MLS Number	14522353
Category	Differentials, Rear
Last Updated	8/5/2026
Location	Spencer, IA, US
Sold By	Vander Haag's Inc.

(855) 370-___ SHOW
NUMBERCall Seller

Email Seller

Save

More Info

2000 Eaton RS404 Rear Differential for a International 9900

$425 USD

(USED) Eaton RS404 Ratio: 3.90 Side Gear Splines: 41 W/ Locker: NO Cast#: 127603

Condition	Used
Fits To Make(s)	International
Fits To Model(s)	9900
Stock Number	26010378
MLS Number	14410833
Category	Differentials, Rear
Last Updated	8/5/2026
Location	Winimac, IN, US
Sold By	Vander Haag's Inc.

(855) 370-___ SHOW
NUMBERCall Seller

Email Seller

Save

More Info

2015 Eaton RS404 Rear Differential for a Freightliner CASCADIA 132

$795 USD

USED EATON RS404 REAR DIFFERENTIAL RATIO: 5.29

Condition	Used
Rear End	5.29 ratio
Fits To Make(s)	FREIGHTLINER
Fits To Model(s)	CASCADIA 132
Stock Number	98346
MLS Number	13286329
Category	Differentials, Rear
Last Updated	8/4/2026
Location	Crandall, TX, US
Sold By	Tim Jordan's Truck Parts Inc.

(833) 359-___ SHOW
NUMBERCall Seller

Email Seller

Save

More Info

2012 Eaton RS404 Rear Differential for a Freightliner Cascadia

$750 USD

SPICER EATON RS 404 REAR REAR 3.70 RATIO

Condition	Used
Rear End	3.70 ratio
Fits To Make(s)	FREIGHTLINER
Fits To Model(s)	Cascadia
Stock Number	28492
MLS Number	14518343
Category	Differentials, Rear
Last Updated	8/1/2026
Location	Douglas, GA, US
Sold By	American Truck Parts, Inc.

(877) 254-___ SHOW
NUMBERCall Seller

Email Seller

Save

More Info

2000 Eaton RS404 Rear Differential for a Kenworth T800

$595 USD

(USED) Eaton RS404 Ratio: 4.11 Side Gear Splines: 41 W/ Locker: NO Cast#: 127603

Condition	Used
Fits To Make(s)	Kenworth
Fits To Model(s)	T800
Stock Number	26020028
MLS Number	14506232
Category	Differentials, Rear
Last Updated	7/25/2026
Location	Winimac, IN, US
Sold By	Vander Haag's Inc.

(855) 370-___ SHOW
NUMBERCall Seller

Email Seller

Save

More Info

2001 Eaton RS404 Rear Differential for a Peterbilt 379

$585 USD

(USED) Eaton RS404 Ratio: 3.55 Side Gear Splines: 41 W/ Locker: NO Cast#: -

Condition	Used
Fits To Make(s)	Peterbilt
Fits To Model(s)	379
Stock Number	26037162
MLS Number	14503652
Category	Differentials, Rear
Last Updated	7/24/2026
Location	Spencer, IA, US
Sold By	Vander Haag's Inc.

(855) 370-___ SHOW
NUMBERCall Seller

Email Seller

Save

More Info

1998 Eaton RS404 Rear Differential for a Peterbilt 379

$375 USD

(USED) Eaton RS404 Ratio: 2.85 Side Gear Splines: 41 W/ Locker: NO Cast#: 127603 Ref# 13701

Condition	Used
Fits To Make(s)	Peterbilt
Fits To Model(s)	379
Part Number	13701
Stock Number	26027389
MLS Number	14466395
Category	Differentials, Rear
Last Updated	7/18/2026
Location	Sioux Falls, SD, US
Sold By	Vander Haag's Inc.

(855) 370-___ SHOW
NUMBERCall Seller

Email Seller

Save

More Info

2010 Eaton RS404 Rear Differential for a International Prostar

$325 USD

(USED) Eaton RS404 Ratio: 3.70 Side Gear Splines: 41 W/ Locker: NO Cast#: -

Condition	Used
Fits To Make(s)	International
Fits To Model(s)	PROSTAR
Stock Number	26027790
MLS Number	14466319
Category	Differentials, Rear
Last Updated	7/18/2026
Location	Winimac, IN, US
Sold By	Vander Haag's Inc.

(855) 370-___ SHOW
NUMBERCall Seller

Email Seller

Save

More Info

1998 Eaton RS404 Rear Differential for a Peterbilt 377

$425 USD

(USED) Eaton RS404 Ratio: 3.90 Side Gear Splines: 41 W/ Locker: NO Cast#: 127603 Ref# N/A NO TAG

Condition	Used
Fits To Make(s)	Peterbilt
Fits To Model(s)	377
Part Number	N/A NO TAG
Stock Number	26022267
MLS Number	14489459
Category	Differentials, Rear
Last Updated	7/17/2026
Location	Sioux Falls, SD, US
Sold By	Vander Haag's Inc.