Vander Haag's Inc. Eaton RSP40 Rear Differentials For Sale

Vander Haag`s Inc
3809 4th Ave W
Spencer, IA 51301-2082
United States
(855) 370-3711

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Vander Haag's Inc.

Industry
Truck Parts

Top-Category
Axles & Differentials

Category
Differentials, Rear

Manufacturer
Eaton

Model
RSP40

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2006 Eaton RSP40 Rear Differential for a Kenworth T2000

$375 USD

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

Condition	Used
Fits To Make(s)	Kenworth
Fits To Model(s)	T2000
Stock Number	25323151
MLS Number	12222737
Category	Differentials, Rear
Last Updated	8/29/2024
Location	Council Bluffs, IA, US
Sold By	Vander Haag's Inc.

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2008 Eaton RSP40 Rear Differential for a Peterbilt 389

$360 USD

(USED) Eaton RSP40 Ratio: 3.25 Side Gear Splines: 41 W/ Locker: NO Cast#: 131812

Condition	Used
Fits To Make(s)	Peterbilt
Fits To Model(s)	389
Stock Number	25677741
MLS Number	13028671
Category	Differentials, Rear
Last Updated	8/8/2024
Location	Sioux Falls, SD, US
Sold By	Vander Haag's Inc.

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2012 Eaton RSP40 Rear Differential for a Peterbilt 386

$395 USD

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

Condition	Used
Fits To Make(s)	Peterbilt
Fits To Model(s)	386
Part Number	131812
Stock Number	25667668
MLS Number	12988840
Category	Differentials, Rear
Last Updated	7/27/2024
Location	Sioux Falls, SD, US
Sold By	Vander Haag's Inc.

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2007 Eaton RSP40 Rear Differential for a Kenworth T800

$350 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)	T800
Stock Number	25672284
MLS Number	12989118
Category	Differentials, Rear
Last Updated	7/16/2024
Location	Winimac, IN, US
Sold By	Vander Haag's Inc.

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2011 Eaton RSP40 Rear Differential for a Peterbilt 389

$350 USD

(USED) Eaton RSP40 Ratio: 3.70 Side Gear Splines: 41 W/ Locker: NO Cast#: 131812

Condition	Used
Fits To Make(s)	Peterbilt
Fits To Model(s)	389
Stock Number	25657883
MLS Number	12914982
Category	Differentials, Rear
Last Updated	6/6/2024
Location	Spencer, IA, US
Sold By	Vander Haag's Inc.

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2013 Eaton RSP40 Rear Differential for a Peterbilt 579

$350 USD

(USED) Eaton RSP40 Ratio: 2.64 Side Gear Splines: 41 W/ Locker: NO

Condition	Used
Fits To Make(s)	Peterbilt
Fits To Model(s)	579
Stock Number	25651454
MLS Number	12881756
Category	Differentials, Rear
Last Updated	5/20/2024
Location	Sioux Falls, SD, US
Sold By	Vander Haag's Inc.

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2011 Eaton RSP40 Rear Differential for a Peterbilt 386

$350 USD

(USED) Eaton RSP40 Ratio: 2.64 Side Gear Splines: 41 W/ Locker: NO Cast#: 131812

Condition	Used
Fits To Make(s)	Peterbilt
Fits To Model(s)	386
Stock Number	25637255
MLS Number	12871964
Category	Differentials, Rear
Last Updated	5/16/2024
Location	Des Moines, IA, US
Sold By	Vander Haag's Inc.

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2009 Eaton RSP40 Rear Differential for a Peterbilt 386

$325 USD

(USED) Eaton RSP40 Ratio: 3.25 Side Gear Splines: 41 W/ Locker: NO Cast#: 131812 Ref# N/A

Condition	Used
Fits To Make(s)	Peterbilt
Fits To Model(s)	386
Part Number	N/A
Stock Number	25623017
MLS Number	12784062
Category	Differentials, Rear
Last Updated	4/19/2024
Location	Sioux Falls, SD, US
Sold By	Vander Haag's Inc.

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2009 Eaton RSP40 Rear Differential for a Peterbilt 386

2014 Eaton RSP40 Rear Differential for a Peterbilt 579

2016 Eaton RSP40 Rear Differential for a Kenworth T440

$574 USD

(USED) Eaton RSP40 Ratio: 4.33 Side Gear Splines: 41 W/ Locker: NO Cast#: NA

Condition	Used
Fits To Make(s)	Kenworth
Fits To Model(s)	T440
Stock Number	25924823
MLS Number	14104173
Category	Differentials, Rear
Last Updated	5/15/2026
Location	Winimac, IN, US
Sold By	Vander Haag's Inc.

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2011 Eaton RSP40 Rear Differential for a Peterbilt 384

$574 USD

(USED) Eaton RSP40 Ratio: 4.11 Side Gear Splines: 41 W/ Locker: NO Cast#: 131812

Condition	Used
Fits To Make(s)	Peterbilt
Fits To Model(s)	384
Stock Number	25918209
MLS Number	14079122
Category	Differentials, Rear
Last Updated	5/15/2026
Location	Council Bluffs, IA, US
Sold By	Vander Haag's Inc.

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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.

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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.

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1996 Eaton RSP40 Rear Differential for a Kenworth T800

$574 USD

(USED) Eaton RSP40 Ratio: 4.11 Side Gear Splines: 41 W/ Locker: NO Cast#: 127603

Condition	Used
Fits To Make(s)	Kenworth
Fits To Model(s)	T800
Stock Number	25878149
MLS Number	13880567
Category	Differentials, Rear
Last Updated	4/24/2026
Location	Council Bluffs, IA, US
Sold By	Vander Haag's Inc.

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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.

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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.

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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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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.

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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.

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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.

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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.

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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.

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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.

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2009 Eaton RSP40 Rear Differential for a Peterbilt 386

$350 USD

(USED) Eaton RSP40 Ratio: 2.64 Side Gear Splines: 41 W/ Locker: NO Cast#: 511323

Condition	Used
Fits To Make(s)	Peterbilt
Fits To Model(s)	386
Stock Number	25911672
MLS Number	14254172
Category	Differentials, Rear
Last Updated	3/19/2026
Location	Spencer, IA, US
Sold By	Vander Haag's Inc.