Used Eaton RS404 Axles &amp; Differentials For Sale

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2005 Eaton RS404 Rear Axle Housing for a International 4400

$1,500 USD

OEM# 320584 / 320585 / 10046959

Condition	Used
Fits To Make(s)	INTERNATIONAL
Fits To Model(s)	4400
Stock Number	14926
MLS Number	11681924
Category	Axle Housings, Rear
Last Updated	1/13/2026
Location	Enfield, CT, US
Sold By	Camerota Truck Parts

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2000 Eaton RS404 Rear Axle Housing for a Sterling

$1,500 USD

OEM 320108

Condition	Used
Suspension	Spring
Fits To Make(s)	STERLING
Stock Number	6651
MLS Number	10893164
Category	Axle Housings, Rear
Last Updated	1/15/2026
Location	Enfield, CT, US
Sold By	Camerota Truck Parts

1999 Eaton RS404 Rear Differential for a Volvo VNL

$325 USD

(USED) Eaton RS404 Ratio: 3.70 Side Gear Splines: 41 W/ Locker: NO Cast#: 127603

Condition	Used
Fits To Make(s)	Volvo
Fits To Model(s)	VNL
Stock Number	25642938
MLS Number	12863379
Category	Differentials, Rear
Last Updated	1/11/2026
Location	Spencer, IA, US
Sold By	Vander Haag's Inc.

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Eaton RS404 Differential Part

$75 USD

RS 404 3.90 USED GEAR SET, Serial#: 211485, Core Charge: N/A, Casting#: 211485

Condition	Used
Part Number	211485 513368
Stock Number	211485 USED
MLS Number	10628311
Category	Differential Misc. Parts
Last Updated	1/6/2026
Location	Ucon, ID, US
Sold By	Holst Truck Parts

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Eaton RS404 Differential Part

$150 USD

3.70 gearset

Condition	Used
Part Number	513369 / 211484
Stock Number	513369(used)
MLS Number	9968810
Category	Differential Misc. Parts
Last Updated	1/6/2026
Location	Ucon, ID, US
Sold By	Holst Truck Parts

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Eaton RS404 Rear Differential

$500 USD

Good used Eaton DS404 Rear, Rear Differential Assembly. 3.25 Ratio. 90 day guarantee for swap or refund

Condition	Used
Rear End	3.25 ratio
Fits To Make(s)	EATON
Fits To Model(s)	RS404
Stock Number	Ryd RS404/3.25/41
MLS Number	11999592
Category	Differentials, Rear
Last Updated	1/1/2026
Location	Fitchburg, MA, US
Sold By	Rydemore Heavy Duty Truck Parts

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Eaton RS404 Rear Differential

$500 USD

Good used Eaton RS404 Rear, Rear Differential Assembly. 3.36 Ratio. 90 day guarantee for swap or refund

Quantity	2
Condition	Used
Rear End	3.36 ratio
Fits To Make(s)	EATON
Fits To Model(s)	RS404
Stock Number	Ryd RS404/3.36/41
MLS Number	11402853
Category	Differentials, Rear
Last Updated	1/1/2026
Location	Fitchburg, MA, US
Sold By	Rydemore Heavy Duty Truck Parts

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Eaton RS404 Rear Differential

$500 USD

Good used Eaton DS404 Rear, Rear Differential Assembly. 2.93 Ratio. 90 day guarantee for swap or refund

Quantity	2
Condition	Used
Rear End	2.93 ratio
Fits To Make(s)	EATON
Fits To Model(s)	RS404
Stock Number	Ryd RS404/2.93/41
MLS Number	10714392
Category	Differentials, Rear
Last Updated	1/1/2026
Location	Fitchburg, MA, US
Sold By	Rydemore Heavy Duty Truck Parts

2000 Eaton RS404 Rear Axle Housing for a Sterling A9513

$1,250 USD

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

Condition	Used
Fits To Make(s)	Sterling
Fits To Model(s)	A9513
Stock Number	25469883
MLS Number	12285952
Category	Axle Housings, Rear
Last Updated	12/31/2025
Location	Spencer, IA, US
Sold By	Vander Haag's Inc.

2007 Eaton RS404 Rear Differential for a International 8600

$585 USD

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

Condition	Used
Fits To Make(s)	International
Fits To Model(s)	8600
Stock Number	25668602
MLS Number	12960244
Category	Differentials, Rear
Last Updated	12/29/2025
Location	Winimac, IN, US
Sold By	Vander Haag's Inc.

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Eaton RS404 Axle Shaft

$150 USD

Eaton DS404/RS404 Axle Shaft, P/N 127438

Condition	Used
Stock Number	27134
MLS Number	13969201
Category	Axle Shafts
Last Updated	12/27/2025
Location	Fresno, CA, US
Sold By	Garabedian Equipment

2015 Eaton RS404 Rear Differential for a International Lonestar

$455 USD

(USED) Eaton RS404 Ratio: 3.36 Side Gear Splines: 41 W/ Locker: NO Cast#: 509824

Condition	Used
Fits To Make(s)	International
Fits To Model(s)	LONESTAR
Stock Number	25386056
MLS Number	12894522
Category	Differentials, Rear
Last Updated	12/20/2025
Location	Spencer, IA, US
Sold By	Vander Haag's Inc.

2000 Eaton RS404 Rear Differential for a Peterbilt 385

$485 USD

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

Condition	Used
Fits To Make(s)	Peterbilt
Fits To Model(s)	385
Stock Number	25645830
MLS Number	12864178
Category	Differentials, Rear
Last Updated	12/6/2025
Location	Winimac, IN, US
Sold By	Vander Haag's Inc.

2005 Eaton RS404 Rear Axle Housing for a International 9900

$1,250 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)	9900
Stock Number	25461009
MLS Number	12206207
Category	Axle Housings, Rear
Last Updated	11/23/2025
Location	Winimac, IN, US
Sold By	Vander Haag's Inc.

2000 Eaton RS404 Rear Differential for a Peterbilt 377

$325 USD

(USED) Eaton RS404 Ratio: 3.70 Side Gear Splines: 41 W/ Locker: NO Cast#: 127603

Condition	Used
Fits To Make(s)	Peterbilt
Fits To Model(s)	377
Stock Number	25667099
MLS Number	12973916
Category	Differentials, Rear
Last Updated	11/21/2025
Location	Council Bluffs, IA, US
Sold By	Vander Haag's Inc.

2002 Eaton RS404 Rear Differential for a Freightliner C120 Century

$485 USD

(USED) Eaton RS404 Ratio: 3.55 Side Gear Splines: 41 W/ Locker: NO Cast#: 123797 Ref# ASMG123797-1

Condition	Used
Fits To Make(s)	Freightliner
Fits To Model(s)	C120 CENTURY
Part Number	ASMG123797-1
Stock Number	25794321
MLS Number	13604684
Category	Differentials, Rear
Last Updated	11/22/2025
Location	Spencer, IA, US
Sold By	Vander Haag's Inc.

2004 Eaton RS404 Rear Differential for a Western Star 4900FA

$325 USD

(USED) Eaton RS404 Ratio: 3.70 Side Gear Splines: 41 W/ Locker: NO Cast#: 130825

Condition	Used
Fits To Make(s)	Western Star Trucks
Fits To Model(s)	4900FA
Stock Number	25806522
MLS Number	13631934
Category	Differentials, Rear
Last Updated	11/21/2025
Location	Winimac, IN, US
Sold By	Vander Haag's Inc.

2009 Eaton RS404 Rear Axle Housing for a International Prostar

$950 USD

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

Condition	Used
Fits To Make(s)	International
Fits To Model(s)	PROSTAR
Stock Number	25771872
MLS Number	13476153
Category	Axle Housings, Rear
Last Updated	11/12/2025
Location	Sioux Falls, SD, US
Sold By	Vander Haag's Inc.

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Eaton RS404 Rear Differential for a Kenworth T800

$1,275 USD

Livraison partout au Canada États-Unis. We ship anywhere in Canada USA. - Stock: 6403D - Eaton Spicer - DS404, Ratio 4.11 - 40 000 lbs, ARRIÈRE, SANS Lock - 40 000 lbs, REAR rear ,...

Condition	Used
Rear End	4.11 ratio
Fits To Make(s)	Kenworth
Fits To Model(s)	T800
Stock Number	6403D
MLS Number	13971246
Category	Differentials, Rear
Last Updated	11/7/2025
Location	Beauceville, QC, Canada
Sold By	Camions Gilbert

2011 Eaton RS404 Rear Differential for a International Prostar

$375 USD

(USED) Eaton RS404 Ratio: 2.64 Side Gear Splines: 41 W/ Locker: NO Cast#: 131812

Condition	Used
Fits To Make(s)	International
Fits To Model(s)	PROSTAR
Stock Number	25768543
MLS Number	13451012
Category	Differentials, Rear
Last Updated	11/6/2025
Location	Kansas City, MO, US
Sold By	Vander Haag's Inc.

2012 Eaton RS404 Rear Differential for a International Transtar (8600)

$375 USD

(USED) Eaton RS404 Ratio: 3.36 Side Gear Splines: 41 W/ Locker: NO Cast#: 131812

Condition	Used
Fits To Make(s)	International
Fits To Model(s)	TRANSTAR (8600)
Stock Number	25816538
MLS Number	13709024
Category	Differentials, Rear
Last Updated	11/5/2025
Location	Spencer, IA, US
Sold By	Vander Haag's Inc.

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2007 Eaton RS404 Rear Differential for a Freightliner COLUMBIA 120

$699.99 USD

Eaton RS404 Rear Rear Differential 3.70 Ratio, From 2007 Freightliner Columbia 120 VIN 1FUJA6CK07LY28312

Condition	Used
Fits To Make(s)	FREIGHTLINER
Fits To Model(s)	COLUMBIA 120
Stock Number	146951
MLS Number	13676058
Category	Differentials, Rear
Last Updated	10/25/2025
Location	Owensboro, KY, US
Sold By	West Side Truck Parts

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2001 Eaton RS404 Rear Differential for a Western Star TR 4900 EX

$699.99 USD

Eaton RS404 Rear Rear Differential 3.55 Ratio, From 2001 Western Star 4900 EX VIN 5CKEDDJHX1C100274

Condition	Used
Fits To Make(s)	WESTERN STAR TR
Fits To Model(s)	4900 EX
Stock Number	146931
MLS Number	13665708
Category	Differentials, Rear
Last Updated	10/25/2025
Location	Owensboro, KY, US
Sold By	West Side Truck Parts

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2001 Eaton RS404 Front Differential for a Western Star TR 4900 EX

$999.99 USD

Eaton RS404 Front Rear Differential 3.55 Ratio, From 2001 Western Star 4900 EX VIN 5CKEDDJHX1C100274

Condition	Used
Fits To Make(s)	WESTERN STAR TR
Fits To Model(s)	4900 EX
Stock Number	146930
MLS Number	13665707
Category	Differentials, Front
Last Updated	10/25/2025
Location	Owensboro, KY, US
Sold By	West Side Truck Parts