Used Eaton RSP40 Axles & Differentials For Sale

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Eaton

Model
RSP40

Condition
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326 - 350 of 475 listings

Eaton RSP40 Rear Differential

2013 Eaton RSP40 Rear Differential for a Peterbilt 587

2012 Eaton RSP40 Rear Differential for a Kenworth T660

$395 USD

(USED) Eaton RSP40 Ratio: 3.42 Side Gear Splines: 41 W/ Locker: NO Cast#: 131812

Condition	Used
Fits To Make(s)	Kenworth
Fits To Model(s)	T660
Stock Number	25872528
MLS Number	14587714
Category	Differentials, Rear
Last Updated	9/5/2026
Location	Council Bluffs, IA, US
Sold By	Vander Haag's Inc.

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2006 Eaton RSP40 Rear Differential for a Kenworth T600

$375 USD

(USED) Eaton RSP40 Ratio: 3.36 Side Gear Splines: 41 W/ Locker: NO Cast#: 131812 Ref# N/A

Condition	Used
Fits To Make(s)	Kenworth
Fits To Model(s)	T600
Part Number	N/A
Stock Number	26058369
MLS Number	14587570
Category	Differentials, Rear
Last Updated	9/5/2026
Location	Sioux Falls, SD, US
Sold By	Vander Haag's Inc.

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2007 Eaton RSP40 Rear Differential for a International 9200

$1,850 USD

GTO

Condition	Used
Rear End	3.55 ratio
Fits To Make(s)	INTERNATIONAL
Fits To Model(s)	9200
Stock Number	22803
MLS Number	10534354
Category	Differentials, Rear
Last Updated	9/5/2026
Location	Douglas, GA, US
Sold By	American Truck Parts, Inc.

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Eaton RSP40 Rear Differential

$1,250 USD

REBUILT 1 YEAR WARRANTY!!!

Condition	Used
Rear End	3.70 ratio
Stock Number	27247
MLS Number	12622281
Category	Differentials, Rear
Last Updated	9/5/2026
Location	Douglas, GA, US
Sold By	American Truck Parts, Inc.

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2010 Eaton RSP40 Rear Differential for a Kenworth T660

$1,250 USD

Condition	Used
Rear End	3.36 ratio
Fits To Make(s)	KENWORTH
Fits To Model(s)	T660
Stock Number	22651
MLS Number	10534319
Category	Differentials, Rear
Last Updated	9/5/2026
Location	Douglas, GA, US
Sold By	American Truck Parts, Inc.

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2006 Eaton RSP40 Rear Differential for a Kenworth T800

$850 USD

GTO

Condition	Used
Rear End	3.55 ratio
Fits To Make(s)	KENWORTH
Fits To Model(s)	T800
Stock Number	20944
MLS Number	10534029
Category	Differentials, Rear
Last Updated	9/5/2026
Location	Douglas, GA, US
Sold By	American Truck Parts, Inc.

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2013 Eaton RSP40 Rear Differential for a Peterbilt 386

$850 USD

GTO

Condition	Used
Rear End	3.55 ratio
Fits To Make(s)	PETERBILT
Fits To Model(s)	386
Stock Number	21246
MLS Number	10534074
Category	Differentials, Rear
Last Updated	9/5/2026
Location	Douglas, GA, US
Sold By	American Truck Parts, Inc.

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1992 Eaton RSP40 Rear Differential for a Kenworth W900

$850 USD

GTO

Condition	Used
Rear End	3.70 ratio
Fits To Make(s)	KENWORTH
Fits To Model(s)	W900
Stock Number	21379
MLS Number	10534099
Category	Differentials, Rear
Last Updated	9/5/2026
Location	Douglas, GA, US
Sold By	American Truck Parts, Inc.

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2006 Eaton RSP40 Rear Differential for a Kenworth T 600

$850 USD

GTO

Condition	Used
Rear End	3.55 ratio
Fits To Make(s)	KENWORTH
Fits To Model(s)	T 600
Stock Number	21610
MLS Number	10534167
Category	Differentials, Rear
Last Updated	9/5/2026
Location	Douglas, GA, US
Sold By	American Truck Parts, Inc.

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2007 Eaton RSP40 Rear Differential for a Kenworth T2000

$850 USD

GTO

Condition	Used
Rear End	3.55 ratio
Fits To Make(s)	KENWORTH
Fits To Model(s)	T2000
Stock Number	21756
MLS Number	10534196
Category	Differentials, Rear
Last Updated	9/5/2026
Location	Douglas, GA, US
Sold By	American Truck Parts, Inc.

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2003 Eaton RSP40 Rear Differential for a Kenworth T800

$850 USD

GTO

Condition	Used
Rear End	2.93 ratio
Fits To Make(s)	KENWORTH
Fits To Model(s)	T800
Stock Number	22962
MLS Number	10534385
Category	Differentials, Rear
Last Updated	9/5/2026
Location	Douglas, GA, US
Sold By	American Truck Parts, Inc.

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2006 Eaton RSP40 Rear Differential for a Peterbilt 387

$750 USD

GTO

Condition	Used
Rear End	3.36 ratio
Fits To Make(s)	PETERBILT
Fits To Model(s)	387
Stock Number	27569
MLS Number	13025459
Category	Differentials, Rear
Last Updated	9/5/2026
Location	Douglas, GA, US
Sold By	American Truck Parts, Inc.

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2010 Eaton RSP40 Rear Differential for a Kenworth T660

$750 USD

DSP 40 REAR REAR 3.55 RATIO

Condition	Used
Rear End	3.55 ratio
Fits To Make(s)	KENWORTH
Fits To Model(s)	T660
Stock Number	28348
MLS Number	14148903
Category	Differentials, Rear
Last Updated	9/5/2026
Location	Douglas, GA, US
Sold By	American Truck Parts, Inc.

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2009 Eaton RSP40 Rear Differential for a Kenworth T660

$750 USD

EATO RSP 4 3.55 RATIO

Condition	Used
Rear End	3.55 ratio
Fits To Make(s)	KENWORTH
Fits To Model(s)	T660
Stock Number	28404
MLS Number	14380184
Category	Differentials, Rear
Last Updated	9/5/2026
Location	Douglas, GA, US
Sold By	American Truck Parts, Inc.

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2006 Eaton RSP40 Rear Differential for a Kenworth T800

Contact for price

Condition	Used
Rear End	3.90 ratio
Fits To Make(s)	KENWORTH
Fits To Model(s)	T800
Stock Number	24986
MLS Number	10638298
Category	Differentials, Rear
Last Updated	9/5/2026
Location	Douglas, GA, US
Sold By	American Truck Parts, Inc.

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2006 Eaton RSP40 Rear Differential for a Kenworth T2000

Contact for price

GTO

Condition	Used
Rear End	3.36 ratio
Fits To Make(s)	KENWORTH
Fits To Model(s)	T2000
Stock Number	27255
MLS Number	12639202
Category	Differentials, Rear
Last Updated	9/5/2026
Location	Douglas, GA, US
Sold By	American Truck Parts, Inc.

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2010 Eaton RSP40 Rear Differential for a Kenworth T2000

Contact for price

GTO

Condition	Used
Rear End	3.55 ratio
Fits To Make(s)	KENWORTH
Fits To Model(s)	T2000
Stock Number	25351
MLS Number	11063475
Category	Differentials, Rear
Last Updated	9/5/2026
Location	Douglas, GA, US
Sold By	American Truck Parts, Inc.

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2005 Eaton RSP40 Rear Differential for a Peterbilt 387

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GTO

Condition	Used
Rear End	3.36 ratio
Fits To Make(s)	PETERBILT
Fits To Model(s)	387
Stock Number	25378
MLS Number	11082140
Category	Differentials, Rear
Last Updated	9/5/2026
Location	Douglas, GA, US
Sold By	American Truck Parts, Inc.

(877) 254-___ SHOW
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2006 Eaton RSP40 Rear Differential for a Kenworth T800

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GTO

Condition	Used
Rear End	3.36 ratio
Fits To Make(s)	KENWORTH
Fits To Model(s)	T800
Stock Number	25578
MLS Number	11193087
Category	Differentials, Rear
Last Updated	9/5/2026
Location	Douglas, GA, US
Sold By	American Truck Parts, Inc.

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2006 Eaton RSP40 Rear Differential for a Peterbilt 387

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GTO

Condition	Used
Rear End	3.36 ratio
Fits To Make(s)	PETERBILT
Fits To Model(s)	387
Stock Number	25915
MLS Number	11467812
Category	Differentials, Rear
Last Updated	9/5/2026
Location	Douglas, GA, US
Sold By	American Truck Parts, Inc.

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2004 Eaton RSP40 Rear Differential for a Kenworth T800

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GTO

Condition	Used
Rear End	3.90 ratio
Fits To Make(s)	KENWORTH
Fits To Model(s)	T800
Stock Number	26631
MLS Number	11979924
Category	Differentials, Rear
Last Updated	9/5/2026
Location	Douglas, GA, US
Sold By	American Truck Parts, Inc.

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2015 Eaton RSP40 Rear Differential for a Peterbilt 579

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GTO

Condition	Used
Rear End	3.08 ratio
Fits To Make(s)	PETERBILT
Fits To Model(s)	579
Stock Number	26936
MLS Number	12222818
Category	Differentials, Rear
Last Updated	9/5/2026
Location	Douglas, GA, US
Sold By	American Truck Parts, Inc.

(877) 254-___ SHOW
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2013 Eaton RSP40 Rear Differential for a Peterbilt 386

Contact for price

GTO

Condition	Used
Rear End	3.55 ratio
Fits To Make(s)	PETERBILT
Fits To Model(s)	386
Stock Number	23021
MLS Number	10534405
Category	Differentials, Rear
Last Updated	9/5/2026
Location	Douglas, GA, US
Sold By	American Truck Parts, Inc.