Eaton RS404 Rear Differentials For Sale

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.

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.

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.

2015 Eaton RS404 Rear Differential for a International Durastar (4300)

$375 USD

(USED) Eaton RS404 Ratio: 6.17 Side Gear Splines: 41 W/ Locker: NO Cast#: N/A

Condition	Used
Fits To Make(s)	International
Fits To Model(s)	Durastar (4300)
Stock Number	26014816
MLS Number	14486846
Category	Differentials, Rear
Last Updated	7/16/2026
Location	Kansas City, MO, US
Sold By	Vander Haag's Inc.

2009 Eaton RS404 Rear Differential for a International 9900

$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)	9900
Stock Number	26002276
MLS Number	14390681
Category	Differentials, Rear
Last Updated	7/9/2026
Location	Winimac, IN, US
Sold By	Vander Haag's Inc.

2001 Eaton RS404 Rear Differential for a International 9400

$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	7/12/2026
Location	Winimac, IN, US
Sold By	Vander Haag's Inc.

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 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	7/4/2026
Location	Sioux Falls, SD, US
Sold By	Vander Haag's Inc.

2005 Eaton RS404 Rear Differential for a GMC C8500

$425 USD

(USED) Eaton RS404 Ratio: 6.50 Side Gear Splines: 41 W/ Locker: NO Cast#: 131812

Condition	Used
Fits To Make(s)	GMC
Fits To Model(s)	C8500
Stock Number	26021898
MLS Number	14451923
Category	Differentials, Rear
Last Updated	6/26/2026
Location	Council Bluffs, IA, US
Sold By	Vander Haag's Inc.

2009 Eaton RS404 Rear Differential for a International Prostar

$455 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)	PROSTAR
Stock Number	25979228
MLS Number	14327394
Category	Differentials, Rear
Last Updated	6/24/2026
Location	Spencer, IA, US
Sold By	Vander Haag's Inc.

(877) 254-___ SHOW
NUMBERCall Seller

Eaton RS404 Rear Differential

$1,250 USD

REMAN 1 WARR

Condition	Remanufactured
Rear End	3.25 ratio
Stock Number	28440
MLS Number	14443855
Category	Differentials, Rear
Last Updated	6/23/2026
Location	Douglas, GA, US
Sold By	American Truck Parts, Inc.

(877) 254-___ SHOW
NUMBERCall Seller

Eaton RS404 Rear Differential

$1,250 USD

REMAN 1 YEAR WARR.

Condition	Remanufactured
Rear End	3.55 ratio
Stock Number	28415
MLS Number	14407826
Category	Differentials, Rear
Last Updated	6/17/2026
Location	Douglas, GA, US
Sold By	American Truck Parts, 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.

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

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.

(888) 519-___ SHOW
NUMBERCall Seller

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.

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.

2007 Eaton RS404 Rear Differential for a GMC C8500

$375 USD

(USED) Eaton RS404 Ratio: 6.17 Side Gear Splines: 41 W/ Locker: NO Cast#: 131812

Condition	Used
Fits To Make(s)	GMC
Fits To Model(s)	C8500
Stock Number	25995688
MLS Number	14396540
Category	Differentials, Rear
Last Updated	5/31/2026
Location	Council Bluffs, IA, US
Sold By	Vander Haag's Inc.

1996 Eaton RS404 Rear Differential for a Volvo Wca

$425 USD

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

Condition	Used
Fits To Make(s)	Volvo
Fits To Model(s)	Wca
Stock Number	25976059
MLS Number	14388814
Category	Differentials, Rear
Last Updated	5/24/2026
Location	Spencer, IA, US
Sold By	Vander Haag's Inc.

Eaton RS404 Rear Differential for a 1996 Peterbilt 379

$695 USD

RS404 3.70 GOOD INSPECTED TAKEOUT. 90 DAY WARRANTY, Axle Spline Count: 41, Serial#: NA, Core Charge: 150.00, Ratio: 3.70

Condition	Used
Fits To Make(s)	Peterbilt
Fits To Model(s)	379
Will Fit Year(s)	1996
Part Number	RS404
Stock Number	11523-8
MLS Number	11841047
Category	Differentials, Rear
Last Updated	6/13/2026
Location	Ucon, ID, US
Sold By	Holst Truck Parts

Eaton RS404 Rear Differential

$395 USD

RS404 3.55 GOOD INSPECTED TAKEOUT., Axle Spline Count: 41, Ratio: 3.55

Condition	Used
Rear End	3.55 ratio
Stock Number	404R-BS
MLS Number	11795861
Category	Differentials, Rear
Last Updated	5/15/2026
Location	Ucon, ID, US
Sold By	Holst Truck Parts

Eaton RS404 Rear Differential for a 2000 Kenworth W900

$695 USD

RS404 3.55 GOOD USED REAR DIFFERENTIAL ASSEMBLY. 90 DAY WARRANTY EXCHANGE, Axle Spline Count: 41, Serial#: NA, Core Charge: NA, Ratio: 3.55

Condition	Used
Fits To Make(s)	Kenworth
Fits To Model(s)	W900
Will Fit Year(s)	2000
Part Number	RS-404
Stock Number	12022-6
MLS Number	11209105
Category	Differentials, Rear
Last Updated	5/14/2026
Location	Ucon, ID, US
Sold By	Holst Truck Parts