Eaton RSP40 Truck Parts For Sale

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Eaton RSP40 Rear Differential

$500 USD

Good used Eaton RSP40 Rear, Rear Differential Assembly. 3.25 Ratio. 90 day guarantee for swap or refund

Quantity	2
Condition	Used
Rear End	3.25 ratio
Fits To Make(s)	EATON
Fits To Model(s)	RSP40
Stock Number	Ryd RSP40/3.25/41
MLS Number	10806818
Category	Differentials, Rear
Last Updated	1/1/2026
Location	Fitchburg, MA, US
Sold By	Rydemore Heavy Duty Truck Parts

2014 Eaton RSP40 Rear Differential for a Kenworth T660

$395 USD

(USED) Eaton RSP40 Ratio: 3.42 Side Gear Splines: 41 W/ Locker: NO Cast#: Could Not Verify

Condition	Used
Fits To Make(s)	Kenworth
Fits To Model(s)	T660
Stock Number	25740346
MLS Number	13331406
Category	Differentials, Rear
Last Updated	12/31/2025
Location	Kansas City, MO, US
Sold By	Vander Haag's Inc.

2016 Eaton RSP40 Rear Differential for a Kenworth T680

$415 USD

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

Condition	Used
Fits To Make(s)	Kenworth
Fits To Model(s)	T680
Stock Number	25708510
MLS Number	13193637
Category	Differentials, Rear
Last Updated	12/26/2025
Location	Spencer, IA, US
Sold By	Vander Haag's Inc.

2007 Eaton RSP40 Rear Differential for a International 8600

$317 USD

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

Condition	Used
Fits To Make(s)	International
Fits To Model(s)	8600
Stock Number	25794342
MLS Number	13572364
Category	Differentials, Rear
Last Updated	12/26/2025
Location	Council Bluffs, IA, US
Sold By	Vander Haag's Inc.

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2009 Eaton RSP40 Rear Differential for a Kenworth T600

$795 USD

USED EATON REAR DIFFERENTIAL RSP40, RATIO 3.36

Condition	Used
Rear End	3.36 ratio
Fits To Make(s)	KENWORTH
Fits To Model(s)	T600
Stock Number	94668
MLS Number	12889223
Category	Differentials, Rear
Last Updated	12/24/2025
Location	Crandall, TX, US
Sold By	Tim Jordan's Truck Parts Inc.

2005 Eaton RSP40 Rear Differential for a Kenworth T600

$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)	T600
Stock Number	25808327
MLS Number	13631850
Category	Differentials, Rear
Last Updated	12/10/2025
Location	Kansas City, MO, US
Sold By	Vander Haag's Inc.

2016 Eaton RSP40 Rear Differential for a Peterbilt 579

$415 USD

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

Condition	Used
Fits To Make(s)	Peterbilt
Fits To Model(s)	579
Stock Number	25670062
MLS Number	13013476
Category	Differentials, Rear
Last Updated	12/5/2025
Location	Winimac, IN, US
Sold By	Vander Haag's Inc.

2014 Eaton RSP40 Rear Differential for a Peterbilt 579

$415 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)	579
Stock Number	25801519
MLS Number	13605906
Category	Differentials, Rear
Last Updated	12/5/2025
Location	Winimac, IN, US
Sold By	Vander Haag's Inc.

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Eaton RSP40 Rear Axle Housing

$1,500 USD

GOOD CONDITION USED REAR/REAR AXLE HOUSING, OEM# 320258

Condition	Used
Stock Number	12615
MLS Number	10895048
Category	Axle Housings, Rear
Last Updated	11/19/2025
Location	Enfield, CT, US
Sold By	Camerota Truck Parts

Eaton RSP40 Rear Differential

$495 USD

INSPECTED TAKE OUT RSP40 5.57. 90 DAY PARTS ONLY WARRANTY. EXTENDED WARRANTY AVAILABLE., Axle Spline Count: 41, Serial#: 131812, Core Charge: EXCHANGE, Ratio: 557

Condition	Used
Part Number	62163
Stock Number	62163
MLS Number	13983377
Category	Differentials, Rear
Last Updated	11/14/2025
Location	Ucon, ID, US
Sold By	Holst Truck Parts

2012 Eaton RSP40 Rear Differential for a Peterbilt 386

$574 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	25730898
MLS Number	13296351
Category	Differentials, Rear
Last Updated	11/15/2025
Location	Winimac, IN, US
Sold By	Vander Haag's Inc.

2019 Eaton RSP40 Rear Differential for a Peterbilt 579

$375 USD

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

Condition	Used
Fits To Make(s)	Peterbilt
Fits To Model(s)	579
Part Number	N/A
Stock Number	25781167
MLS Number	13543451
Category	Differentials, Rear
Last Updated	11/7/2025
Location	Sioux Falls, SD, US
Sold By	Vander Haag's Inc.

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2014 Eaton RSP40 Rear Differential for a Kenworth T680

$699.99 USD

Eaton RSP40 Rear Rear Differential 3.36 Ratio, From 2014 Kenworth T680 VIN 1XKYDP9X9EJ364696

Condition	Used
Fits To Make(s)	KENWORTH
Fits To Model(s)	T680
Stock Number	146902
MLS Number	13662683
Category	Differentials, Rear
Last Updated	10/25/2025
Location	Owensboro, KY, US
Sold By	West Side Truck Parts

Eaton RSP40 Rear Differential

$1,295 USD

REBUILT RSP40 .4.11 12 MONTH PARTS AND LABOR WARRANTY. EXTENDED WARRANTY AVAILABLE., Axle Spline Count: 41, Serial#: 62129, Core Charge: EXCHANGE, Ratio: 4.11

Condition	Remanufactured
Part Number	62129
Stock Number	62129
MLS Number	13910048
Category	Differentials, Rear
Last Updated	10/21/2025
Location	Ucon, ID, US
Sold By	Holst Truck Parts

Eaton RSP40 Rear Differential

$1,295 USD

RSP40 3.70 41 SPL.S.G. EXTENED WARRANTY AVAILABLE 12 MONTH PARTS AND LABOR, Axle Spline Count: 41, Core Charge: EXCHANGE CRITICAL CORE, Ratio: 3.70, Casting#: 131812

Condition	Remanufactured
Rear End	3.70 ratio
Part Number	62126
Stock Number	62126
MLS Number	13907066
Category	Differentials, Rear
Last Updated	10/18/2025
Location	Ucon, ID, US
Sold By	Holst Truck Parts

2017 Eaton RSP40 Rear Axle Housing for a Peterbilt 579

$725 USD

(USED) Eaton RSP40 Brake Type: AIR DRUM Wheel Type: PILOT Suspension: PETE FLEX AIR Track Width : 73

Condition	Used
Fits To Make(s)	Peterbilt
Fits To Model(s)	579
Stock Number	25574347
MLS Number	12578919
Category	Axle Housings, Rear
Last Updated	10/4/2025
Location	Sioux Falls, SD, US
Sold By	Vander Haag's Inc.

2013 Eaton RSP40 Rear Axle Housing for a Kenworth T660

$725 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	25823303
MLS Number	13689194
Category	Axle Housings, Rear
Last Updated	9/28/2025
Location	Council Bluffs, IA, US
Sold By	Vander Haag's Inc.

Eaton RSP40 Rear Axle Housing for a 2005 Peterbilt 379

$1,495 USD

USED HOUSING ASSEMBLY/WILL INSPECT BEARING SURFACES. REAR HOUSING/CURVED SPRING LATE LOW AIR, ALSO FITS AG380 FLEXAIR, Serial#: NA, Hub Bolts: 10, Suspension: LATE LOW AIR, Brake Type: DRUM

Condition	Used
Fits To Make(s)	Peterbilt
Fits To Model(s)	379
Will Fit Year(s)	2005
Part Number	AG400L AG380
Stock Number	90825-13
MLS Number	13847148
Category	Axle Housings, Rear
Last Updated	2/18/2026
Location	Ucon, ID, US
Sold By	Holst Truck Parts

Eaton RSP40 Rear Differential for a 2005 Peterbilt 379

$795 USD

GOOD USED INSPECTED TAKEOUT/ 90 DAY WARRANTY EXCHANGE, Serial#: NA, Core Charge: 250.00, Ratio: 3.36, Casting#: NA

Condition	Used
Rear End	3.36 ratio
Fits To Make(s)	Peterbilt
Fits To Model(s)	379
Will Fit Year(s)	2005
Stock Number	90825-4
MLS Number	13847136
Category	Differentials, Rear
Last Updated	9/25/2025
Location	Ucon, ID, US
Sold By	Holst Truck Parts

Eaton RSP40 Rear Differential for a 2003 Peterbilt 379

$795 USD

GOOD INSPECTED TAKEOUT. 90 DAY WARRANTY EXCHANGE, Axle Spline Count: 41, Core Charge: 250.00, Ratio: 3.90

Condition	Used
Rear End	3.90 ratio
Fits To Make(s)	Peterbilt
Fits To Model(s)	379
Will Fit Year(s)	2003
Part Number	NA
Stock Number	90325-4
MLS Number	13810816
Category	Differentials, Rear
Last Updated	9/13/2025
Location	Ucon, ID, US
Sold By	Holst Truck Parts

2014 Eaton RSP40 Rear Differential for a Peterbilt 386

$415 USD

(USED) Eaton RSP40 Ratio: 3.25 Side Gear Splines: 41 W/ Locker: NO Cast#: N/A Ref# RSP40325

Condition	Used
Fits To Make(s)	Peterbilt
Fits To Model(s)	386
Part Number	RSP40325
Stock Number	25825723
MLS Number	13699473
Category	Differentials, Rear
Last Updated	9/6/2025
Location	Sioux Falls, SD, US
Sold By	Vander Haag's Inc.

2012 Eaton RSP40 Rear Axle Housing for a Kenworth T660

$725 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	25803836
MLS Number	13615938
Category	Axle Housings, Rear
Last Updated	9/5/2025
Location	Winimac, IN, US
Sold By	Vander Haag's Inc.

Eaton RSP40 Rear Axle Housing for a 2015 Kenworth T680

$1,295 USD

GOOD USED HOUSING ASSEMBLY. RSP40 RSP41 PACCAR AG400L, FLEXAIR/ LATE LOW AIR, BEARING SURFACES ARE GOOD, Core Charge: NA

Condition	Used
Fits To Make(s)	Kenworth
Fits To Model(s)	T680
Will Fit Year(s)	2015
Part Number	NA
Stock Number	82425-11
MLS Number	13788028
Category	Axle Housings, Rear
Last Updated	9/24/2025
Location	Ucon, ID, US
Sold By	Holst Truck Parts

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Eaton RSP40 Rear Differential

$795 USD

USED EATON RSP40 (REAR) REAR DIFFERENTIAL, RATIO 3.55. THE PRICE IS FOR THE DIFFERENTIAL ONLY BUT WE HAVE HOUSINGS AVAILABLE IF NEEDED.

Condition	Used
Rear End	3.55 ratio
Stock Number	96627
MLS Number	13089473
Category	Differentials, Rear
Last Updated	8/15/2025
Location	Crandall, TX, US
Sold By	Tim Jordan's Truck Parts Inc.