Eaton RS404 Axles & Differentials For Sale

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RS404

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451 - 475 of 909 listings

1999 Eaton RS404 Rear Differential for a Freightliner FLD120

$900 USD

GTO 100 DAY WARRANTY

Condition	Used
Rear End	2.93 ratio
Fits To Make(s)	FREIGHTLINER
Fits To Model(s)	FLD120
Stock Number	8186
MLS Number	10532558
Category	Differentials, Rear
Last Updated	12/15/2025
Location	Douglas, GA, US
Sold By	American Truck Parts, Inc.

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1995 Eaton RS404 Rear Differential for a Freightliner FLD120

$850 USD

GTO 100 DAY WARRANTY

Condition	Used
Rear End	3.90 ratio
Fits To Make(s)	FREIGHTLINER
Fits To Model(s)	FLD120
Stock Number	8155
MLS Number	10532557
Category	Differentials, Rear
Last Updated	12/15/2025
Location	Douglas, GA, US
Sold By	American Truck Parts, Inc.

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1999 Eaton RS404 Rear Differential for a Kenworth T2000

$750 USD

GTO 100 DAY WARRANTY

Condition	Used
Rear End	3.55 ratio
Fits To Make(s)	KENWORTH
Fits To Model(s)	T2000
Stock Number	8089
MLS Number	10532551
Category	Differentials, Rear
Last Updated	12/15/2025
Location	Douglas, GA, US
Sold By	American Truck Parts, Inc.

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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.

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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.

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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.

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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.

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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.

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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.

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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.

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Eaton RS404 Differential, RATIO 2.64

$950 USD

USED EATON RS404 REAR DIFFERENTIAL ASSEMBLY, RATIO 2.64.

Condition	Used
Part Number	RS404 RATIO 2.64
Stock Number	S4062
MLS Number	10093197
Category	Differentials, Unspecified
Last Updated	4/7/2023
Location	Palmyra, PA, US
Sold By	Boots and Hank's Truck Parts, Inc.

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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.

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Eaton RS404 Differential, 4.88 RATIO

$650 USD

USED EATON RS404 REAR DIFFERENTIAL, RATIO 4.88.,

Condition	Used
Part Number	RS404
Stock Number	S4080
MLS Number	10107142
Category	Differentials, Unspecified
Last Updated	4/7/2023
Location	Palmyra, PA, US
Sold By	Boots and Hank's Truck Parts, Inc.

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Eaton RS404 Differential, RATIO 3.55

$650 USD

USED/ TAKE OUT 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	S4077
MLS Number	10107110
Category	Differentials, Unspecified
Last Updated	4/7/2023
Location	Palmyra, PA, US
Sold By	Boots and Hank's Truck Parts, Inc.

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Eaton RS404 Differential, REAR, RATIO 3.36

$650 USD

USED EATON RS404 REAR DIFFERENTIAL, RATIO 3.36, FOR MORE INFORMATION PLEASE CALL 844-EZ-ENGIN.

Condition	Used
Part Number	RS404, RATIO 3.36
Stock Number	S4076
MLS Number	10106119
Category	Differentials, Unspecified
Last Updated	4/7/2023
Location	Palmyra, PA, US
Sold By	Boots and Hank's Truck Parts, Inc.

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Eaton RS404 Differential, Rear Ratio 3.55

$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	S4075
MLS Number	10106118
Category	Differentials, Unspecified
Last Updated	4/7/2023
Location	Palmyra, PA, US
Sold By	Boots and Hank's Truck Parts, Inc.

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Eaton RS404 Differential

$650 USD

USED EATON RS404 REAR DIFFERENTIAL, RATIO 2.85. FOR MORE INFORMATION PLEASE CALL 844-EZ-ENGIN.

Condition	Used
Part Number	RS404
Stock Number	S4074
MLS Number	10101640
Category	Differentials, Unspecified
Last Updated	4/7/2023
Location	Palmyra, PA, US
Sold By	Boots and Hank's Truck Parts, Inc.

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Eaton RS404 Differential REAR DIFFERENTIAL, RATIO 3.70

$650 USD

USED EATON RS404 REAR DIFFERENTIAL ASSEMBLY, RATIO 3.70.

Condition	Used
Part Number	RS404
Stock Number	S4073
MLS Number	10101638
Category	Differentials, Unspecified
Last Updated	4/7/2023
Location	Palmyra, PA, US
Sold By	Boots and Hank's Truck Parts, Inc.

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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.

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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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2000 Eaton RS404 Rear Differential for a Kenworth T800

1998 Eaton RS404 Rear Differential for a Peterbilt 379

Newly Listed

$375 USD

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

Condition	Used
Fits To Make(s)	Peterbilt
Fits To Model(s)	379
Stock Number	26027389
MLS Number	14466395
Category	Differentials, Rear
Last Updated	7/4/2026
Location	Sioux Falls, SD, US
Sold By	Vander Haag's Inc.

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1998 Eaton RS404 Rear Axle Housing for a Peterbilt 379

Newly Listed

$950 USD

(USED) Eaton RS404 Brake Type: AIR DRUM Wheel Type: PILOT Suspension: PETE LOW AIR LEAF Track Width : 73

Condition	Used
Fits To Make(s)	Peterbilt
Fits To Model(s)	379
Stock Number	26027391
MLS Number	14466394
Category	Axle Housings, Rear
Last Updated	7/4/2026
Location	Sioux Falls, SD, US
Sold By	Vander Haag's Inc.

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2010 Eaton RS404 Rear Differential for a International Prostar

Newly Listed

$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	7/4/2026
Location	Winimac, IN, US
Sold By	Vander Haag's Inc.

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2010 Eaton RS404 Rear Axle Housing for a International Prostar

Newly Listed

$950 USD

(USED) Eaton RS404 Brake Type: AIR DRUM Wheel Type: PILOT Suspension: IROS Track Width : 72

Condition	Used
Fits To Make(s)	International
Fits To Model(s)	Prostar
Stock Number	26027794
MLS Number	14466318
Category	Axle Housings, Rear
Last Updated	7/4/2026
Location	Winimac, IN, US
Sold By	Vander Haag's Inc.