Used Eaton RSP40 Rear Differentials For Sale

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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-277192-18
MLS Number	14140764
Category	Differentials, Rear
Last Updated	2/13/2026
Location	Fresno, CA, US
Sold By	Garabedian Equipment

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2017 Eaton RSP40 Rear Differential for a Kenworth T680

$500 USD

RSP40 - 3.36 Ratio - Pullout - P/N 511328

Condition	Used
Rear End	3.36 ratio
Fits To Make(s)	KENWORTH
Fits To Model(s)	T680
Stock Number	2017-27
MLS Number	14140676
Category	Differentials, Rear
Last Updated	2/13/2026
Location	Fresno, CA, US
Sold By	Garabedian Equipment

2013 Eaton RSP40 Rear Differential for a Peterbilt 386

$375 USD

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

Condition	Used
Fits To Make(s)	Peterbilt
Fits To Model(s)	386
Stock Number	25800363
MLS Number	13602777
Category	Differentials, Rear
Last Updated	2/12/2026
Location	Council Bluffs, IA, US
Sold By	Vander Haag's Inc.

(888) 519-___ SHOW
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Eaton RSP40 Rear Differential

$500 USD

Good used Eaton RSP40 Rear, Rear Differential Assembly. 2.64 Ratio. 90 day guarantee for swap or refund

Condition	Used
Rear End	2.64 ratio
Fits To Make(s)	EATON
Fits To Model(s)	RSP40
Stock Number	Ryd RSP40/2.64/41
MLS Number	14137029
Category	Differentials, Rear
Last Updated	2/11/2026
Location	Fitchburg, MA, US
Sold By	Rydemore Heavy Duty Truck Parts

2010 Eaton RSP40 Rear Differential for a Peterbilt 387

$350 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)	387
Stock Number	25611481
MLS Number	12709683
Category	Differentials, Rear
Last Updated	2/6/2026
Location	Spencer, IA, US
Sold By	Vander Haag's Inc.

2013 Eaton RSP40 Rear Differential for a Kenworth T700

$395 USD

(USED) Eaton RSP40 Ratio: 3.42 Side Gear Splines: 41 W/ Locker: NO Cast#: 515354

Condition	Used
Fits To Make(s)	Kenworth
Fits To Model(s)	T700
Stock Number	25671606
MLS Number	13058976
Category	Differentials, Rear
Last Updated	2/8/2026
Location	Spencer, IA, US
Sold By	Vander Haag's Inc.

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Eaton RSP40 Rear Differential

$795 USD

RSP40 USED TAKEOUT 5.57 RATIO. WILL INSPECT IN OUR GEARSHOP. 90 DAY WARRANTY., Axle Spline Count: 41, Ratio: 5.57

Condition	Used
Rear End	5.57 ratio
Stock Number	P-60985
MLS Number	14117966
Category	Differentials, Rear
Last Updated	1/30/2026
Location	Ucon, ID, US
Sold By	Holst Truck Parts

(855) 980-___ SHOW
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Eaton RSP40 Rear Differential for a 2007 Kenworth T2000

Contact for price

MILES 689734, Ratio: 355

Condition	Used
Rear End	3.55 ratio
Fits To Make(s)	Kenworth
Fits To Model(s)	T2000
Will Fit Year(s)	2007
Stock Number	204952-4
MLS Number	14098635
Category	Differentials, Rear
Last Updated	1/20/2026
Location	Farr West, UT, US
Sold By	Rocky Mountain Truck Parts

2019 Eaton RSP40 Rear Differential for a Peterbilt 579

$395 USD

(USED) Eaton RSP40 Ratio: 3.42 Side Gear Splines: 41 W/ Locker: NO Cast#: NONE Ref# 7012393

Condition	Used
Fits To Make(s)	Peterbilt
Fits To Model(s)	579
Part Number	7012393
Stock Number	25712985
MLS Number	13230922
Category	Differentials, Rear
Last Updated	1/16/2026
Location	Sioux Falls, SD, US
Sold By	Vander Haag's Inc.

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Eaton RSP40 Rear Differential

$600 USD

Good used Eaton RSP40 Rear, Rear Differential Assembly. 3.55 Ratio. 90 day guarantee for swap or refund

Condition	Used
Rear End	3.55 ratio
Fits To Make(s)	EATON
Fits To Model(s)	RSP40
Stock Number	Ryd RSP40/3.55/41
MLS Number	10643512
Category	Differentials, Rear
Last Updated	1/13/2026
Location	Fitchburg, MA, US
Sold By	Rydemore Heavy Duty Truck Parts

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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.

(833) 359-___ SHOW
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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.

(866) 314-___ SHOW
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Eaton RSP40 Rear Differential

$550 USD

3.90,

Condition	Used
Stock Number	REAR-2237
MLS Number	13998064
Category	Differentials, Rear
Last Updated	11/22/2025
Location	LAKEVILLE, MN, US
Sold By	Manders Diesel

(833) 541-___ SHOW
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Eaton RSP40 Rear Differential for a 2003 Peterbilt 379

$550 USD

RSP40 3.55 WILL INSPECT IN OUR GEAR SHOP, 90 DAY WARRANTY, Axle Spline Count: 41, Ratio: 3.55

Condition	Used
Rear End	3.55 ratio
Fits To Make(s)	Peterbilt
Fits To Model(s)	379
Will Fit Year(s)	2003
Part Number	RSP40
Stock Number	31825-4
MLS Number	13460979
Category	Differentials, Rear
Last Updated	11/20/2025
Location	Ucon, ID, US
Sold By	Holst Truck Parts

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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.