Eaton DS404 Truck Parts For Sale

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Eaton DS404 O-Ring, Part # 127545

$0.50 USD

o ring

Condition	New
Part Number	127545
Stock Number	127545
MLS Number	9003158
Category	Differential Misc. Parts
Last Updated	4/3/2026
Location	Ucon, ID, US
Sold By	Holst Truck Parts

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Eaton DS404 Axle Shaft

$90 USD

USED AXLE SHAFT STAMP # 127438 FITS MOST EATON 404'S 405'S 454'S DSP40 RSP40 AND 21060'S MODELS 43.30"L 41SPL 2.1/8 W 8.50 FLANGE 7.00 8 5/8 STR HOLE, Axle Spline Count: 41

Quantity	20
Condition	Used
Part Number	127438
Stock Number	127438
MLS Number	9003043
Category	Axle Shafts
Last Updated	8/16/2023
Location	Ucon, ID, US
Sold By	Holst Truck Parts

2019 Eaton DS404 Differential

$1,795 USD

REBUILT EATON DS404 DIFFERENTIAL 3.70 RATIO, 41 SPLINE, $500 CORE CHARGE, FOR MORE INFORMATION PLEASE CALL (833) 396-5166.

Condition	Remanufactured
Part Number	3.70 RATIO
Stock Number	69642
MLS Number	10042601
Category	Differentials, Unspecified
Last Updated	4/7/2023
Location	Palmyra, PA, US
Sold By	Boots and Hank's Truck Parts, Inc.

Eaton DS404 Front Differential, Ratio 3.55

$950 USD

USED EATON DS404 FRONT DIFFERENTIAL, RATIO3.55

Condition	Used
Part Number	DS404
Stock Number	S4049
MLS Number	10107810
Category	Differentials, Front
Last Updated	4/7/2023
Location	Palmyra, PA, US
Sold By	Boots and Hank's Truck Parts, Inc.

Eaton DS404 Front Differential, Ratio 3.90

$950 USD

USED EATON DS404 FRONT DIFFERENTIAL ASSEMBLY, RATIO 3.90.

Condition	Used
Part Number	DS404
Stock Number	S4047
MLS Number	10107805
Category	Differentials, Unspecified
Last Updated	4/7/2023
Location	Palmyra, PA, US
Sold By	Boots and Hank's Truck Parts, Inc.

Eaton DS404 Front Differential, Ratio 3.90

$950 USD

USED EATON DS404 FRONT DIFFERENTIAL ASSEMBLY, RATIO 3.90

Condition	Used
Part Number	DS404
Stock Number	S4046
MLS Number	10107786
Category	Differentials, Unspecified
Last Updated	2/25/2020
Location	Palmyra, PA, US
Sold By	Boots and Hank's Truck Parts, Inc.

Eaton DS404 Differential - FRONT, RATIO 3.70

$950 USD

USED/ TAKE OUT EATON DS404 FRONT DIFFERENTIAL, RATIO 3.70, FOR MORE INFORMATION PLEASE CALL 844-EZ-ENGIN.

Condition	Used
Part Number	40-145
Stock Number	S4065
MLS Number	10101165
Category	Differentials, Unspecified
Last Updated	4/7/2023
Location	Palmyra, PA, US
Sold By	Boots and Hank's Truck Parts, Inc.

Eaton DS404 Front Differential 3.90 Ratio

$950 USD

USED EATON DS404 FRONT DIFFERENTIAL, 3.90 RATIO, FOR MORE INFORMATION PLEASE CALL 844-EZ-ENGIN.

Condition	Used
Part Number	DS 404 3.90 Ratio
Stock Number	S4063
MLS Number	10094981
Category	Differentials, Unspecified
Last Updated	4/7/2023
Location	Palmyra, PA, US
Sold By	Boots and Hank's Truck Parts, Inc.

Eaton DS404 Differential FRONT 3.55 RATIO

$950 USD

USED EATON DS404 FRONT DIFFERENTIAL ASSEMBLY, RATIO 3.55, FOR MORE INFORMATION PLEASE CALL 844-EZ-ENGIN

Condition	Used
Part Number	DS404, RATIO 3.55
Stock Number	S4061
MLS Number	10092939
Category	Differentials, Unspecified
Last Updated	11/11/2020
Location	Palmyra, PA, US
Sold By	Boots and Hank's Truck Parts, Inc.

Eaton DS404 Front Differential Ratio 3.36

$950 USD

USED EATON DS404 FRONT DIFFERENTIAL ASSEMBLY, 3.36 RATIO, CORE CHARGE $250.00, FOR MORE INFORMATION PLEASE CALL 844-EZ-ENGIN

Condition	Used
Part Number	DS404, 3.36
Stock Number	S4055
MLS Number	10092333
Category	Differentials, Unspecified
Last Updated	7/20/2020
Location	Palmyra, PA, US
Sold By	Boots and Hank's Truck Parts, Inc.

2010 Eaton DS404 Differential Ratio 3.70

$950 USD

USED TAKE OUT EATON DS 404 FRONT DIFFERENTIAL, RATIO 3.70, GEARS CHECKED, 41 SIDE GEARS, WARRANTY, FOR MORE INFORMATION PLEASE CALL (833) 396-5166.

Condition	Used
Part Number	DS404
Stock Number	S4031
MLS Number	10045914
Category	Differentials, Unspecified
Last Updated	4/7/2023
Location	Palmyra, PA, US
Sold By	Boots and Hank's Truck Parts, Inc.

REBUILT 2019 Eaton DS404 Differential

$1,795 USD

REBUILT EATON DS404 FRONT DIFFERENTIAL RATIO 3.36, 41 SPLINE, COMPLETE REBUILD, CORE CHARGE $500.

Condition	Remanufactured
Part Number	DS404
Stock Number	69760
MLS Number	10042606
Category	Differentials, Unspecified
Last Updated	4/7/2023
Location	Palmyra, PA, US
Sold By	Boots and Hank's Truck Parts, Inc.

1995 Eaton DS404 Front Differential for a Freightliner FLD112

Newly Listed

$950 USD

(USED) Eaton DS404 Ratio: 3.90 Side Gear Splines: 41 W/ Locker: NO Cast#: 127605 Ref# S11-15651-390

Condition	Used
Fits To Make(s)	Freightliner
Fits To Model(s)	FLD112
Part Number	S11-15651-390
Stock Number	25948742
MLS Number	14306298
Category	Differentials, Front
Last Updated	4/12/2026
Location	Sioux Falls, SD, US
Sold By	Vander Haag's Inc.

2005 Eaton DS404 Front Differential for a International 8600

Newly Listed

$950 USD

(USED) Eaton DS404 Ratio: 3.90 Side Gear Splines: 41 W/ Locker: NO Cast#: 130812

Condition	Used
Fits To Make(s)	International
Fits To Model(s)	8600
Stock Number	25935963
MLS Number	14301537
Category	Differentials, Front
Last Updated	4/10/2026
Location	Des Moines, IA, US
Sold By	Vander Haag's Inc.

1996 Eaton DS404 Front Differential for a Freightliner FLD120

Newly Listed

$1,217 USD

(USED) Eaton DS404 Ratio: 3.70 Side Gear Splines: 41 W/ Locker: NO Cast#: N/A Ref# N/A

Condition	Used
Fits To Make(s)	Freightliner
Fits To Model(s)	FLD120
Part Number	N/A
Stock Number	25964992
MLS Number	14301528
Category	Differentials, Front
Last Updated	4/10/2026
Location	Sioux Falls, SD, US
Sold By	Vander Haag's Inc.

1999 Eaton DS404 Front Differential for a Kenworth T2000

2014 Eaton DS404 Front Differential for a Peterbilt 388

Newly Listed

$1,314 USD

(USED) Eaton DS404 Ratio: VERIFY Side Gear Splines: 41 W/ Locker: NO Cast#: 130823

Condition	Used
Fits To Make(s)	Peterbilt
Fits To Model(s)	388
Stock Number	25971356
MLS Number	14298464
Category	Differentials, Front
Last Updated	4/9/2026
Location	Spencer, IA, US
Sold By	Vander Haag's Inc.

2000 Eaton DS404 Front Differential for a Peterbilt 378

$1,314 USD

(USED) Eaton DS404 Ratio: 5.57 Side Gear Splines: 41 W/ Locker: NO Cast#: 132038

Condition	Used
Fits To Make(s)	Peterbilt
Fits To Model(s)	378
Stock Number	25971076
MLS Number	14280888
Category	Differentials, Front
Last Updated	4/2/2026
Location	Kansas City, MO, US
Sold By	Vander Haag's Inc.

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Eaton DS404 Front Differential

$2,000 USD

Remanufactured Eaton DS404 front, rear differential assembly. 3.90 ratio, 1 Year warranty for parts or Swap out for another unit. $500 For Labor. Towing not covered.

Quantity	2
Condition	Remanufactured
Rear End	3.90 ratio
Fits To Make(s)	EATON
Fits To Model(s)	DS404
Stock Number	BP TRS DS404/3.90
MLS Number	14050238
Category	Differentials, Front
Last Updated	3/31/2026
Location	Fitchburg, MA, US
Sold By	Rydemore Heavy Duty Truck Parts

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2007 Eaton DS404 Front Differential for a Freightliner COLUMBIA

$1,450 USD

DS 404 3.55 RATIO

Condition	Used
Rear End	3.55 ratio
Fits To Make(s)	FREIGHTLINER
Fits To Model(s)	COLUMBIA
Stock Number	28294
MLS Number	14067672
Category	Differentials, Front
Last Updated	3/31/2026
Location	Douglas, GA, US
Sold By	American Truck Parts, Inc.

2011 Eaton DS404 Front Differential for a International Prostar

$1,325 USD

(USED) Eaton DS404 Ratio: 3.55 Side Gear Splines: 41 W/ Locker: NO Cast#: 132038 Ref# DS404355EX

Condition	Used
Fits To Make(s)	International
Fits To Model(s)	PROSTAR
Part Number	DS404355EX
Stock Number	25932281
MLS Number	14131508
Category	Differentials, Front
Last Updated	3/28/2026
Location	Sioux Falls, SD, US
Sold By	Vander Haag's Inc.

2010 Eaton DS404 Front Differential for a International Prostar

$1,325 USD

(USED) Eaton DS404 Ratio: 3.55 Side Gear Splines: 41 W/ Locker: NO Cast#: 129572 129572

Condition	Used
Fits To Make(s)	International
Fits To Model(s)	PROSTAR
Stock Number	25940182
MLS Number	14146216
Category	Differentials, Front
Last Updated	3/25/2026
Location	Council Bluffs, IA, US
Sold By	Vander Haag's Inc.

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NUMBERCall Seller

Eaton DS404 Front Differential

$2,150 USD

REMAN 1 YEAR WARR.

Condition	Remanufactured
Rear End	3.55 ratio
Stock Number	28372
MLS Number	14261639
Category	Differentials, Front
Last Updated	3/24/2026
Location	Douglas, GA, US
Sold By	American Truck Parts, Inc.

2014 Eaton DS404 Front Differential for a Kenworth T660

$1,314 USD

(USED) Eaton DS404 Ratio: 3.25 Side Gear Splines: 41 W/ Locker: NO Cast#: -

Condition	Used
Fits To Make(s)	Kenworth
Fits To Model(s)	T660
Stock Number	25960500
MLS Number	14239542
Category	Differentials, Front
Last Updated	3/26/2026
Location	Winimac, IN, US
Sold By	Vander Haag's Inc.