Eaton RSP40 Axles &amp; Differentials For Sale

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Eaton RSP40 Rear Differential for a 2005 Kenworth T600B

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40 000 LBS RSP 40 REAR 3.55 RATIO NO LOCKS, Ratio: 3.55

Condition	Used
Rear End	3.55 ratio
Fits To Make(s)	Kenworth
Fits To Model(s)	T600B
Will Fit Year(s)	2005
Stock Number	2375-KW-9
MLS Number	13338460
Category	Differentials, Rear
Last Updated	5/13/2026
Location	STURGEON COUNTY, AB, Canada
Sold By	Badger Truck Parts Ltd.

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Eaton RSP40 Rear Differential for a 2005 Peterbilt 387

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40 000 LBS RSP 40 REAR 3.36 RATIO NO LOCKS, Ratio: 3.36

Condition	Used
Rear End	3.36 ratio
Fits To Make(s)	Peterbilt
Fits To Model(s)	387
Will Fit Year(s)	2005
Stock Number	2406-PETE-7
MLS Number	13338375
Category	Differentials, Rear
Last Updated	5/13/2026
Location	STURGEON COUNTY, AB, Canada
Sold By	Badger Truck Parts Ltd.

2006 Eaton RSP40 Rear Differential for a Peterbilt 387

$395 USD

(USED) Eaton RSP40 Ratio: 3.55 Side Gear Splines: 41 W/ Locker: NO Cast#: 511329 Ref# 511329

Condition	Used
Fits To Make(s)	Peterbilt
Fits To Model(s)	387
Part Number	511329
Stock Number	25797004
MLS Number	13774673
Category	Differentials, Rear
Last Updated	5/10/2026
Location	Spencer, IA, US
Sold By	Vander Haag's Inc.

2015 Eaton RSP40 Rear Differential for a Peterbilt 579

$375 USD

(USED) Eaton RSP40 Ratio: 3.36 Side Gear Splines: 41 W/ Locker: NO Cast#: -

Condition	Used
Fits To Make(s)	Peterbilt
Fits To Model(s)	579
Stock Number	25993513
MLS Number	14359458
Category	Differentials, Rear
Last Updated	5/9/2026
Location	Des Moines, IA, US
Sold By	Vander Haag's Inc.

(855) 794-___ SHOW
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Eaton RSP40 5.29 Ratio Gear Set, Part # 513363

$385 USD

Used RSP40 5.29 Ratio Gear Set - Part # 513363

Condition	Used
Rear End	5.29 ratio
Stock Number	4541136
MLS Number	13896715
Category	Differential Misc. Parts
Last Updated	4/21/2026
Location	Fresno, CA, US
Sold By	Garabedian Equipment

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New Eaton RSP40 5.29 Ratio Gear Set, Part # 513363

$482 USD

NEW RSP40 5.29 Ratio Gear Set - Part # 513363

Condition	New
Rear End	5.29 ratio
Stock Number	4541133
MLS Number	13896711
Category	Differential Misc. Parts
Last Updated	4/21/2026
Location	Fresno, CA, US
Sold By	Garabedian Equipment

2014 Eaton RSP40 Rear Differential for a Mack Cxu

$415 USD

(USED) Eaton RSP40 Ratio: 3.25 Side Gear Splines: 41 W/ Locker: NO Cast#: VERIFY

Condition	Used
Fits To Make(s)	Mack
Fits To Model(s)	Cxu
Stock Number	25955524
MLS Number	14321088
Category	Differentials, Rear
Last Updated	4/20/2026
Location	Winimac, IN, US
Sold By	Vander Haag's Inc.

2014 Eaton RSP40 Rear Axle Housing for a Mack Cxu

$850 USD

(USED) Eaton RSP40 Brake Type: AIR DRUM Wheel Type: PILOT Suspension: MACK AIR Track Width : 72

Condition	Used
Fits To Make(s)	Mack
Fits To Model(s)	CXU
Stock Number	25955526
MLS Number	14314599
Category	Axle Housings, Rear
Last Updated	4/20/2026
Location	Winimac, IN, US
Sold By	Vander Haag's Inc.

2006 Eaton RSP40 Rear Axle Housing for a Kenworth T600

$850 USD

(USED) Eaton RSP40 Brake Type: AIR DRUM Wheel Type: PILOT Suspension: AG400 Track Width : 72

Condition	Used
Fits To Make(s)	Kenworth
Fits To Model(s)	T600
Stock Number	25875026
MLS Number	13909550
Category	Axle Housings, Rear
Last Updated	4/15/2026
Location	Spencer, IA, US
Sold By	Vander Haag's Inc.

2011 Eaton RSP40 Rear Differential for a Kenworth T660

$495 USD

(USED) Eaton RSP40 Ratio: 3.90 Side Gear Splines: 41 W/ Locker: NO Cast#: 131812

Condition	Used
Fits To Make(s)	Kenworth
Fits To Model(s)	T660
Stock Number	25924696
MLS Number	14117716
Category	Differentials, Rear
Last Updated	4/15/2026
Location	Council Bluffs, IA, US
Sold By	Vander Haag's Inc.

2013 Eaton RSP40 Rear Differential for a Peterbilt 365

$350 USD

(USED) Eaton RSP40 Ratio: 3.08 Side Gear Splines: 41 W/ Locker: NO Cast#: 131812

Condition	Used
Fits To Make(s)	Peterbilt
Fits To Model(s)	365
Stock Number	25890237
MLS Number	14001230
Category	Differentials, Rear
Last Updated	4/19/2026
Location	Kansas City, MO, US
Sold By	Vander Haag's Inc.

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2016 Eaton RSP40 Rear Differential for a Kenworth T680

$500 USD

RSP40 - 3.42 Ratio - Pullout - P/N 515354

Condition	Used
Rear End	3.42 ratio
Fits To Make(s)	KENWORTH
Fits To Model(s)	T680
Stock Number	UPS-277297-13
MLS Number	13904809
Category	Differentials, Rear
Last Updated	4/14/2026
Location	Fresno, CA, US
Sold By	Garabedian Equipment

2000 Eaton RSP40 Rear Axle Housing for a Peterbilt 379

$850 USD

(USED) Eaton RSP40 Brake Type: AIR DRUM Wheel Type: PILOT Suspension: PETE FLEX AIR Track Width : 72

Condition	Used
Fits To Make(s)	Peterbilt
Fits To Model(s)	379
Stock Number	25955674
MLS Number	14221946
Category	Axle Housings, Rear
Last Updated	4/12/2026
Location	Council Bluffs, IA, US
Sold By	Vander Haag's Inc.

2005 Eaton RSP40 Rear Differential for a Peterbilt 387

$395 USD

(USED) Eaton RSP40 Ratio: 3.55 Side Gear Splines: 41 W/ Locker: NO Cast#: 131812 Ref# 511329

Condition	Used
Fits To Make(s)	Peterbilt
Fits To Model(s)	387
Part Number	511329
Stock Number	25956772
MLS Number	14306296
Category	Differentials, Rear
Last Updated	4/12/2026
Location	Sioux Falls, SD, US
Sold By	Vander Haag's Inc.

2001 Eaton RSP40 Rear Differential for a Mack CX

$495 USD

(USED) Eaton RSP40 Ratio: 3.90 Side Gear Splines: 41 W/ Locker: NO Cast#: 129351 Ref# NO TAG

Condition	Used
Fits To Make(s)	Mack
Fits To Model(s)	CX
Part Number	NO TAG
Stock Number	25952614
MLS Number	14301532
Category	Differentials, Rear
Last Updated	4/10/2026
Location	Des Moines, IA, US
Sold By	Vander Haag's Inc.

2009 Eaton RSP40 Rear Differential for a Peterbilt 367

$395 USD

(USED) Eaton RSP40 Ratio: 3.55 Side Gear Splines: 41 W/ Locker: NO Cast#: 131812

Condition	Used
Fits To Make(s)	Peterbilt
Fits To Model(s)	367
Stock Number	25960784
MLS Number	14242058
Category	Differentials, Rear
Last Updated	4/3/2026
Location	Winimac, IN, US
Sold By	Vander Haag's Inc.

(833) 396-___ SHOW
NUMBERCall Seller

2013 Eaton RSP40 Rear Differential for a Kenworth T600

$650 USD

Used Eaton Rear Differential RSP40, Ratio 3.55

Condition	Used
Fits To Make(s)	KENWORTH
Fits To Model(s)	T600
Stock Number	S7163RR
MLS Number	11100390
Category	Differentials, Rear
Last Updated	4/1/2026
Location	Palmyra, PA, US
Sold By	Boots and Hank's Truck Parts, Inc.

2007 Eaton RSP40 Rear Axle Housing for a Peterbilt 386

$850 USD

(USED) Eaton RSP40 Brake Type: AIR DRUM Wheel Type: PILOT Suspension: PETE FLEX AIR Track Width : 72

Condition	Used
Fits To Make(s)	Peterbilt
Fits To Model(s)	386
Stock Number	25960092
MLS Number	14239599
Category	Axle Housings, Rear
Last Updated	3/28/2026
Location	Kansas City, MO, US
Sold By	Vander Haag's Inc.

2004 Eaton RSP40 Rear Differential for a Kenworth W900L

$395 USD

(USED) Eaton RSP40 Ratio: 3.55 Side Gear Splines: 41 W/ Locker: NO Cast#: 130830

Condition	Used
Fits To Make(s)	Kenworth
Fits To Model(s)	W900L
Stock Number	25968226
MLS Number	14270036
Category	Differentials, Rear
Last Updated	3/28/2026
Location	Winimac, IN, US
Sold By	Vander Haag's Inc.

2004 Eaton RSP40 Rear Axle Housing for a Kenworth W900L

$850 USD

(USED) Eaton RSP40 Brake Type: AIR DRUM Wheel Type: PILOT Suspension: PETE FLEX AIR Track Width : 72

Condition	Used
Fits To Make(s)	Kenworth
Fits To Model(s)	W900L
Stock Number	25968231
MLS Number	14270035
Category	Axle Housings, Rear
Last Updated	3/28/2026
Location	Winimac, IN, US
Sold By	Vander Haag's Inc.

2010 Eaton RSP40 Rear Differential for a Peterbilt 386

$395 USD

(USED) Eaton RSP40 Ratio: 3.55 Side Gear Splines: 41 W/ Locker: NO Cast#: 131812

Condition	Used
Fits To Make(s)	Peterbilt
Fits To Model(s)	386
Stock Number	25961097
MLS Number	14268021
Category	Differentials, Rear
Last Updated	3/26/2026
Location	Kansas City, MO, US
Sold By	Vander Haag's Inc.

2013 Eaton RSP40 Rear Differential for a Kenworth T660

$395 USD

(USED) Eaton RSP40 Ratio: 3.55 Side Gear Splines: 41 W/ Locker: NO Cast#: 131812

Condition	Used
Fits To Make(s)	Kenworth
Fits To Model(s)	T660
Stock Number	25967565
MLS Number	14267925
Category	Differentials, Rear
Last Updated	3/28/2026
Location	Council Bluffs, IA, US
Sold By	Vander Haag's Inc.

2013 Eaton RSP40 Rear Axle Housing for a Kenworth T660

$850 USD

(USED) Eaton RSP40 Brake Type: AIR DRUM Wheel Type: PILOT Suspension: AG380 Track Width : 72

Condition	Used
Fits To Make(s)	Kenworth
Fits To Model(s)	T660
Stock Number	25967569
MLS Number	14267924
Category	Axle Housings, Rear
Last Updated	3/28/2026
Location	Council Bluffs, IA, US
Sold By	Vander Haag's Inc.