Eaton RSP40 Rear Differentials For Sale

1 - 25 of 304 listings

2006 Eaton RSP40 Rear Differential for a Kenworth T600

1999 Eaton RSP40 Rear Differential for a Peterbilt 379

Eaton RSP40 Rear Differential

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	9/18/2026
Location	Winimac, IN, US
Sold By	Vander Haag's Inc.

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2007 Eaton RSP40 Rear Differential for a Kenworth T800

$317 USD

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

Condition	Used
Fits To Make(s)	Kenworth
Fits To Model(s)	T800
Stock Number	25787778
MLS Number	13558692
Category	Differentials, Rear
Last Updated	9/19/2026
Location	Winimac, IN, US
Sold By	Vander Haag's Inc.

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Eaton RSP40 Rear Differential

$1,350 USD

RSP40-336 - Rebuilt

Condition	Remanufactured
Rear End	3.36 ratio
Stock Number	RSP40-336-REB
MLS Number	13963945
Category	Differentials, Rear
Last Updated	9/17/2026
Location	Fresno, CA, US
Sold By	Garabedian Equipment

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Eaton RSP40 Rear Differential

$1,295 USD

REBUILT RSP40 3.70. 12 MONTH PARTS AND LABOR WARRANTY. EXTENDED WARRANTY AVAILABLE., Axle Spline Count: 41, Serial#: 62587, Core Charge: EXCHANGE, Ratio: 3.70

Condition	Remanufactured
Rear End	3.70 ratio
Part Number	62587
Stock Number	62587
MLS Number	14529833
Category	Differentials, Rear
Last Updated	9/13/2026
Location	Ucon, ID, US
Sold By	Holst Truck Parts

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2014 Eaton RSP40 Rear Differential for a Peterbilt 579

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RSP40 - Rear Rear - 3.42 Ratio - Pullout - DIFF ONLY.

Condition	Used
Rear End	3.42 ratio
Fits To Make(s)	PETERBILT
Fits To Model(s)	579
Stock Number	4462-3
MLS Number	14319957
Category	Differentials, Rear
Last Updated	9/11/2026
Location	Fresno, CA, US
Sold By	Garabedian Equipment

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2013 Eaton RSP40 Rear Differential for a Peterbilt 384

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RSP40 - Rear Rear - 4.11 Ratio - used - Grade C - rebuildable - DIFF ONLY. p/n 511332, Bad gear set, missing ring gear bolts, ring gear teeth are chipped, case looks good.

Condition	Used
Rear End	4.11 ratio
Fits To Make(s)	PETERBILT
Fits To Model(s)	384
Stock Number	4424-3
MLS Number	14305904
Category	Differentials, Rear
Last Updated	9/11/2026
Location	Fresno, CA, US
Sold By	Garabedian Equipment

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Eaton RSP40 Rear Differential

$1,350 USD

RSP40-264 - Rebuilt,

Condition	Remanufactured
Rear End	2.64 ratio
Stock Number	RSP40-264-REB
MLS Number	13963938
Category	Differentials, Rear
Last Updated	9/12/2026
Location	Fresno, CA, US
Sold By	Garabedian Equipment

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2014 Eaton RSP40 Rear Differential

$395 USD

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

Condition	Used
Fits To Make(s)	Kenworth
Fits To Model(s)	T680
Stock Number	25670945
MLS Number	12972206
Category	Differentials, Rear
Last Updated	9/12/2026
Location	Winimac, IN, US
Sold By	Vander Haag's Inc.

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Eaton RSP40 Rear Differential for a 2013 Peterbilt 389

$550 USD

T.O RSP40 3.90 RATIO WILL INSPECT IN OUR GEAR SHOP, 90 DAY WARRANTY., Axle Spline Count: GET, Serial#: GET, Core Charge: 250.00, Ratio: 390

Condition	Used
Fits To Make(s)	Peterbilt
Fits To Model(s)	389
Will Fit Year(s)	2013
Part Number	GET
Stock Number	82126-3
MLS Number	14588139
Category	Differentials, Rear
Last Updated	9/5/2026
Location	Ucon, ID, US
Sold By	Holst Truck Parts

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Eaton RSP40 Rear Differential

$1,295 USD

REBUILT RSP40 3.25. 12 MONTH PARTS AND LABOR WARRANTY. EXTENDED WARRANTY AVAILABLE, Axle Spline Count: 41, Serial#: 62618, Core Charge: EXCHANGE 250 CORE, Ratio: 3.25

Condition	Remanufactured
Part Number	62618
Stock Number	62618
MLS Number	14588136
Category	Differentials, Rear
Last Updated	9/5/2026
Location	Ucon, ID, US
Sold By	Holst Truck Parts

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Eaton RSP40 Rear Differential

$1,350 USD

RSP40-342 - Rebuilt

Condition	Remanufactured
Rear End	3.42 ratio
Stock Number	RSP40-342-REB
MLS Number	13963946
Category	Differentials, Rear
Last Updated	9/6/2026
Location	Fresno, CA, US
Sold By	Garabedian Equipment

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Eaton RSP40 Rear Differential

$1,295 USD

REBUILT RSP40 3.90. 12 MONTH PARTS AND LABOR WARRANTY. EXTENDED WARRANTY AVAILABLE, Axle Spline Count: 41, Serial#: 62610, Core Charge: EXCHANGE CRITICAL CORE 250.00, Ratio: 3.90

Condition	Remanufactured
Part Number	62610
Stock Number	62610
MLS Number	14580107
Category	Differentials, Rear
Last Updated	9/2/2026
Location	Ucon, ID, US
Sold By	Holst Truck Parts

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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

Quantity	2
Condition	Used
Rear End	3.55 ratio
Stock Number	Ryd RSP40/3.55/41
MLS Number	10643512
Category	Differentials, Rear
Last Updated	8/26/2026
Location	Fitchburg, MA, US
Sold By	Rydemore Heavy Duty Truck Parts

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Eaton RSP40 Rear Differential

$1,215 USD

RSP40-336 - Reconditioned

Condition	Remanufactured
Rear End	3.36 ratio
Stock Number	RSP40-336-REC
MLS Number	14028853
Category	Differentials, Rear
Last Updated	8/25/2026
Location	Fresno, CA, US
Sold By	Garabedian Equipment

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2005 Eaton RSP40 Rear Differential for a Kenworth T600

$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)	T600
Stock Number	25808327
MLS Number	13631850
Category	Differentials, Rear
Last Updated	8/23/2026
Location	Kansas City, MO, US
Sold By	Vander Haag's Inc.

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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

Condition	Used
Rear End	3.25 ratio
Stock Number	Ryd RSP40/3.25/41
MLS Number	10806818
Category	Differentials, Rear
Last Updated	8/21/2026
Location	Fitchburg, MA, US
Sold By	Rydemore Heavy Duty Truck Parts

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2015 Eaton RSP40 Rear Differential for a Kenworth T680

$415 USD

(USED) Eaton RSP40 Ratio: 3.25 Side Gear Splines: 41 W/ Locker: NO Cast#: 515327

Condition	Used
Fits To Make(s)	Kenworth
Fits To Model(s)	T680
Stock Number	25743572
MLS Number	13446082
Category	Differentials, Rear
Last Updated	8/20/2026
Location	Spencer, IA, US
Sold By	Vander Haag's Inc.

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2012 Eaton RSP40 Rear Differential for a Freightliner Cascadia 125

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Eaton RSP40- Rear Rear - 3.42 Ratio - Pullout - DIFF ONLY. P/N- 515354, S/N- HN04476282

Condition	Used
Rear End	3.42 ratio
Fits To Make(s)	FREIGHTLINER
Fits To Model(s)	Cascadia 125
Stock Number	4508-3
MLS Number	14445088
Category	Differentials, Rear
Last Updated	8/18/2026
Location	Fresno, CA, US
Sold By	Garabedian Equipment

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Eaton RSP40 Rear Differential

$1,295 USD

REBUILT RSP40 3.25. 12 MONTH PARTS AND LABOR WARRANTY. EXTENDED WARRANTY AVAILABLE, Axle Spline Count: 41, Serial#: 62597, Core Charge: EXCHANGE, Ratio: 3.25

Condition	Remanufactured
Part Number	62597
Stock Number	62597
MLS Number	14529835
Category	Differentials, Rear
Last Updated	8/7/2026
Location	Ucon, ID, US
Sold By	Holst Truck Parts

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Eaton RSP40 Rear Differential for a 2006 Kenworth T600

$795 USD

RSP40 3.36 GOOD INSPECTED DIFFERENTIAL ASSEMBLY. 90 DAY WARRANTY, Axle Spline Count: 41, Serial#: NA, Core Charge: 250.00, Ratio: 3.36

Condition	Used
Fits To Make(s)	Kenworth
Fits To Model(s)	T600
Will Fit Year(s)	2006
Part Number	RSP40
Stock Number	111622-18
MLS Number	11987671
Category	Differentials, Rear
Last Updated	7/25/2026
Location	Ucon, ID, US
Sold By	Holst Truck Parts

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Eaton RSP40 Rear Differential

$1,295 USD

REBUILT RSP40 3.36. 12 MONTH PARTS AND LABOR WARRANTY. EXTENDED WARRANTY AVAILABLE., Axle Spline Count: 41, Serial#: 62573, Core Charge: EXCHANGE, Ratio: 3.36

Condition	Remanufactured
Part Number	62573
Stock Number	62573
MLS Number	14502410
Category	Differentials, Rear
Last Updated	7/23/2026
Location	Ucon, ID, US
Sold By	Holst Truck Parts

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Eaton RSP40 Rear Differential

$1,295 USD

REBUILT RSP40 3.55. 12 MONTH PARTS AND LABOR WARRANTY. EXTENDED WARRANTY AVAILABLE., Axle Spline Count: 41, Serial#: 62404, Core Charge: EXCHANGE, Ratio: 3.55

Condition	Remanufactured
Rear End	3.55 ratio
Part Number	62404
Stock Number	62404
MLS Number	14431144
Category	Differentials, Rear
Last Updated	7/12/2026
Location	Ucon, ID, US
Sold By	Holst Truck Parts

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Eaton RSP40 Rear Differentials For Sale

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