Used Eaton RSP40 Axles & Differentials For Sale

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Eaton

Model
RSP40

Condition
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51 - 75 of 563 listings

Eaton RSP40 Rear Differential

$850 USD

RSP40-285 - Refurbished

Condition	Used
Rear End	2.85 ratio
Stock Number	RSP40-285-REF
MLS Number	14028868
Category	Differentials, Rear
Last Updated	4/14/2026
Location	Fresno, CA, US
Sold By	Garabedian Equipment

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Eaton RSP40 Rear Differential

$850 USD

RSP40-264 - Refurbished

Condition	Used
Rear End	2.64 ratio
Stock Number	RSP40-264-REF
MLS Number	14028867
Category	Differentials, Rear
Last Updated	4/14/2026
Location	Fresno, CA, US
Sold By	Garabedian Equipment

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Eaton RSP40 Rear Differential

$500 USD

RSP40 - 5.57 Ratio - Pullout - Grade A - Unit In Good Condition.

Condition	Used
Rear End	5.57 ratio
Stock Number	4540415
MLS Number	13895665
Category	Differentials, Rear
Last Updated	4/14/2026
Location	Fresno, CA, US
Sold By	Garabedian Equipment

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Eaton RSP40 Rear Differential for a Unmarked N/A

$300 USD

RSP40 - 3.25 Ratio - Core - Grade C - Rebuildable - Pinion Threads Bad. CORE UNIT SOLD AS-IS

Condition	Used
Rear End	3.25 ratio
Fits To Make(s)	Unmarked
Fits To Model(s)	N/A
Stock Number	4538060
MLS Number	13890531
Category	Differentials, Rear
Last Updated	4/14/2026
Location	Fresno, CA, US
Sold By	Garabedian Equipment

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2013 Eaton RSP40 Rear Axle Housing for a Peterbilt 384

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Eaton Rear Rear Axle Housing, RSP40, w/ Torque Rod Bracket, 10 Hole Pilot, Air Drum Brakes, ABS.

Condition	Used
Suspension	Air Leaf
Fits To Make(s)	PETERBILT
Fits To Model(s)	384
Stock Number	4424-6
MLS Number	14305907
Category	Axle Housings, Rear
Last Updated	4/14/2026
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 - Pullout - DIFF ONLY.

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	4/14/2026
Location	Fresno, CA, US
Sold By	Garabedian Equipment

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2013 Rear Axle Housing for a Kenworth T660

$725 USD

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

Condition	Used
Fits To Make(s)	Kenworth
Fits To Model(s)	T660
Stock Number	25355103
MLS Number	12686721
Category	Axle Housings, Rear
Last Updated	4/16/2026
Location	Spencer, IA, US
Sold By	Vander Haag's Inc.

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Eaton RSP40 Rear Axle Housing

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Eaton Rear Axle Housing, RSP40, P/N 320586, 10 Hole Pilot, Air Drum Brakes, 16 Hole Flange.

Condition	Used
Stock Number	31450
MLS Number	14291941
Category	Axle Housings, Rear
Last Updated	4/9/2026
Location	Dinuba, CA, US
Sold By	Garabedian Equipment

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Eaton RSP40 Rear Axle Housing

$850 USD

Eaton Rear Axle Housing, RSP40, w/ Torque Rod Bracket, 10 Hole Pilot, Air Drum Brakes, ABS, 53.5" Inner Flange To Inner Flange, STD Track, P/N 321550. Removed From Hendrickson Haulmaax...

Condition	Used
Stock Number	4540417
MLS Number	14290784
Category	Axle Housings, Rear
Last Updated	4/5/2026
Location	Dinuba, CA, US
Sold By	Garabedian Equipment

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Eaton RSP40 Rear Axle Housing for a Kenworth

$850 USD

Eaton Rear Axle Housing, RSP40, 10 Hole Pilot, Air Drum Brakes, 54" Inner Flange To Inner Flange, 16 Hole Flange, Axle Shafts Removed, Removed From Kenworth AG400 Suspension,

Condition	Used
Fits To Make(s)	Kenworth
Stock Number	4536308
MLS Number	14288388
Category	Axle Housings, Rear
Last Updated	4/5/2026
Location	Dinuba, CA, US
Sold By	Garabedian Equipment

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2006 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	25642088
MLS Number	12855891
Category	Differentials, Rear
Last Updated	4/4/2026
Location	Winimac, IN, US
Sold By	Vander Haag's Inc.

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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
Stock Number	25670945
MLS Number	12972206
Category	Differentials, Rear
Last Updated	4/9/2026
Location	Winimac, IN, US
Sold By	Vander Haag's Inc.

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Eaton RSP40 Rear Axle Housing for a Kenworth

$850 USD

Eaton Rear Axle Housing, RSP40, w/ Torque Rod Bracket, 10 Hole Pilot, Air Drum Brakes, ABS. P/N 321304

Condition	Used
Fits To Make(s)	KENWORTH
Stock Number	28421
MLS Number	14044386
Category	Axle Housings, Rear
Last Updated	4/8/2026
Location	Fresno, CA, US
Sold By	Garabedian Equipment

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Eaton RSP40 Rear Differential

$650 USD

Condition	Used
Rear End	3.25 ratio
Stock Number	BP 14641
MLS Number	10263509
Category	Differentials, Rear
Last Updated	4/1/2026
Location	Palmyra, PA, US
Sold By	Boots and Hank's Truck Parts, Inc.

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2016 Eaton RSP40 Rear Differential for a Kenworth T680

$500 USD

RSP40 - 3.42 - Pullout - Grade A - p/n 515354 - Unit Is In Good Condition.

Condition	Used
Rear End	3.42 ratio
Fits To Make(s)	KENWORTH
Fits To Model(s)	T680
Stock Number	UPS-277186-15
MLS Number	14143024
Category	Differentials, Rear
Last Updated	3/31/2026
Location	Fresno, CA, US
Sold By	Garabedian Equipment

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2015 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	25493613
MLS Number	12351791
Category	Axle Housings, Rear
Last Updated	4/2/2026
Location	Sioux Falls, SD, US
Sold By	Vander Haag's Inc.

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Eaton RSP40 Rear Differential

$550 USD

3.42,

Condition	Used
Stock Number	REAR-2285
MLS Number	14268933
Category	Differentials, Rear
Last Updated	3/26/2026
Location	LAKEVILLE, MN, US
Sold By	Manders Diesel

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2013 Spicer J400S Rear Differential for a Peterbilt 587

$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)	587
Stock Number	25370926
MLS Number	12336375
Category	Differentials, Rear
Last Updated	3/26/2026
Location	Spencer, IA, US
Sold By	Vander Haag's Inc.

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2016 Eaton RSP40 Rear Axle Housing for a Peterbilt 579

$725 USD

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

Condition	Used
Fits To Make(s)	Peterbilt
Fits To Model(s)	579
Stock Number	25823290
MLS Number	13712505
Category	Axle Housings, Rear
Last Updated	3/21/2026
Location	Winimac, IN, US
Sold By	Vander Haag's Inc.

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2008 Eaton RSP40 Rear Differential for a Mack Cxu

$375 USD

(USED) Eaton RSP40 Ratio: 3.36 Side Gear Splines: 41 W/ Locker: NO Cast#: 130946 RUST FORMING ON CRR CASING, SURFACE RUST ON RING GEAR COLLAR AND PINION GEAR.

Condition	Used
Fits To Make(s)	Mack
Fits To Model(s)	CXU
Stock Number	25786793
MLS Number	13538936
Category	Differentials, Rear
Last Updated	3/18/2026
Location	Spencer, IA, US
Sold By	Vander Haag's Inc.

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2014 Eaton RSP40 Rear Differential for a Kenworth T680

$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)	Kenworth
Fits To Model(s)	T680
Part Number	N/A
Stock Number	25779922
MLS Number	13543453
Category	Differentials, Rear
Last Updated	3/19/2026
Location	Sioux Falls, SD, US
Sold By	Vander Haag's Inc.