Eaton RS404 Rear Differentials For Sale by Dealerships

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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.

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.

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.

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.

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.

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.

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.

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Eaton RS404 Rear Differential

Newly Listed

$1,250 USD

REMAN 1 YEAR WARR.

Condition	Remanufactured
Rear End	3.70 ratio
Stock Number	28439
MLS Number	14441489
Category	Differentials, Rear
Last Updated	6/20/2026
Location	Douglas, GA, US
Sold By	American Truck Parts, Inc.

2000 Eaton RS404 Rear Differential for a Kenworth T800

Newly Listed

$595 USD

(USED) Eaton RS404 Ratio: 4.11 Side Gear Splines: 41 W/ Locker: NO Cast#: 127603 Ref# N/A MISSING OEM TAG

Condition	Used
Fits To Make(s)	Kenworth
Fits To Model(s)	T800
Part Number	N/A
Stock Number	26015931
MLS Number	14438859
Category	Differentials, Rear
Last Updated	6/19/2026
Location	Sioux Falls, SD, US
Sold By	Vander Haag's Inc.

2006 Eaton RS404 Rear Differential for a Volvo VNL

Newly Listed

$585 USD

(USED) Eaton RS404 Ratio: 3.55 Side Gear Splines: 41 W/ Locker: NO Cast#: 131812

Condition	Used
Fits To Make(s)	Volvo
Fits To Model(s)	VNL
Stock Number	26016054
MLS Number	14438857
Category	Differentials, Rear
Last Updated	6/19/2026
Location	Des Moines, IA, US
Sold By	Vander Haag's Inc.

1996 Eaton RS404 Rear Differential for a Volvo Wia

Newly Listed

$425 USD

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

Condition	Used
Fits To Make(s)	Volvo
Fits To Model(s)	Wia
Stock Number	26018021
MLS Number	14438837
Category	Differentials, Rear
Last Updated	6/19/2026
Location	Des Moines, IA, US
Sold By	Vander Haag's Inc.

Eaton RS404 Rear Differential

2001 Eaton RS404 Rear Differential for a International 9400

Newly Listed

$585 USD

(USED) Eaton RS404 Ratio: 3.55 Side Gear Splines: 41 W/ Locker: NO Cast#: 129351-C

Condition	Used
Fits To Make(s)	International
Fits To Model(s)	9400
Stock Number	26016441
MLS Number	14432900
Category	Differentials, Rear
Last Updated	6/17/2026
Location	Winimac, IN, US
Sold By	Vander Haag's Inc.

2000 Eaton RS404 Rear Differential for a Sterling A9513

$425 USD

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

Condition	Used
Fits To Make(s)	Sterling
Fits To Model(s)	A9513
Stock Number	25935068
MLS Number	14130475
Category	Differentials, Rear
Last Updated	6/14/2026
Location	Winimac, IN, US
Sold By	Vander Haag's Inc.

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Eaton RS404 Rear Differential for a 2000 Kenworth W900

$595 USD

GOOD INSPECTED TAKEOUT, 90 DAY WARRANTY EXCHANGE, Core Charge: NA, Ratio: 355

Condition	Used
Rear End	3.55 ratio
Fits To Make(s)	Kenworth
Fits To Model(s)	W900
Will Fit Year(s)	2000
Part Number	RS404 19060S 21060S
Stock Number	51026-4
MLS Number	14424513
Category	Differentials, Rear
Last Updated	6/13/2026
Location	Ucon, ID, US
Sold By	Holst Truck Parts

2007 Eaton RS404 Rear Differential for a Freightliner Columbia 120

$585 USD

(USED) Eaton RS404 Ratio: 3.55 Side Gear Splines: 41 W/ Locker: NO Cast#: 131812

Condition	Used
Fits To Make(s)	Freightliner
Fits To Model(s)	COLUMBIA 120
Stock Number	26013381
MLS Number	14421224
Category	Differentials, Rear
Last Updated	6/14/2026
Location	Des Moines, IA, US
Sold By	Vander Haag's Inc.

1997 Eaton RS404 Rear Differential for a Freightliner FLD120

$375 USD

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

Condition	Used
Fits To Make(s)	Freightliner
Fits To Model(s)	FLD120
Stock Number	26013587
MLS Number	14421183
Category	Differentials, Rear
Last Updated	6/12/2026
Location	Spencer, IA, US
Sold By	Vander Haag's Inc.

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Eaton RS404 Rear Differential

$1,200 USD

Remanufactured Eaton RS404 rear, rear differential assebmly. 4.11 ratio. 1 Year warranty for parts or Swap out for another unit. $500 For Labor. Towing not covered.

Quantity	2
Condition	Remanufactured
Rear End	4.11 ratio
Stock Number	BP TRS RS404/4.11
MLS Number	14050465
Category	Differentials, Rear
Last Updated	6/9/2026
Location	Fitchburg, MA, US
Sold By	Rydemore Heavy Duty Truck Parts

2000 Eaton RS404 Rear Differential for a Sterling A9513

$425 USD

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

Condition	Used
Fits To Make(s)	Sterling
Fits To Model(s)	A9513
Stock Number	25994071
MLS Number	14360783
Category	Differentials, Rear
Last Updated	6/7/2026
Location	Winimac, IN, US
Sold By	Vander Haag's Inc.

1998 Eaton RS404 Rear Differential for a Freightliner FLD120

$425 USD

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

Condition	Used
Fits To Make(s)	Freightliner
Fits To Model(s)	FLD120
Stock Number	26001922
MLS Number	14411672
Category	Differentials, Rear
Last Updated	6/7/2026
Location	Spencer, IA, US
Sold By	Vander Haag's Inc.

2000 Eaton RS404 Rear Differential for a Peterbilt 379

$325 USD

(USED) Eaton RS404 Ratio: 3.70 Side Gear Splines: 41 W/ Locker: NO Cast#: 131812

Condition	Used
Fits To Make(s)	Peterbilt
Fits To Model(s)	379
Stock Number	26008038
MLS Number	14410847
Category	Differentials, Rear
Last Updated	6/6/2026
Location	Kansas City, MO, US
Sold By	Vander Haag's Inc.

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	6/6/2026
Location	Winimac, IN, US
Sold By	Vander Haag's Inc.

2003 Eaton RS404 Rear Differential for a Mack CX

$425 USD

(USED) Eaton RS404 Ratio: 3.90 Side Gear Splines: 41 W/ Locker: NO Cast#: 127603 Ref# 02-X32-A81

Condition	Used
Fits To Make(s)	Mack
Fits To Model(s)	CX
Part Number	02-X32-A81
Stock Number	26005328
MLS Number	14409605
Category	Differentials, Rear
Last Updated	6/5/2026
Location	Sioux Falls, SD, US
Sold By	Vander Haag's Inc.

2005 Eaton RS404 Rear Differential for a International 9200

$325 USD

(USED) Eaton RS404 Ratio: 3.70 Side Gear Splines: 41 W/ Locker: NO Cast#: CANNOT VERIFY

Condition	Used
Fits To Make(s)	International
Fits To Model(s)	9200
Stock Number	25938389
MLS Number	14256331
Category	Differentials, Rear
Last Updated	5/29/2026
Location	Council Bluffs, IA, US
Sold By	Vander Haag's Inc.