Rockwell RRL20-145 Axles & Differentials For Sale

Shop used and remanufactured Rockwell RRL20-145 Axles & Differentials on MyLittleSalesman.com . Compare active listings with prices from $750 to $1,850. Sellers include American Truck Parts and Spalding Truck Parts. Filter by condition, price, or year to find the Rockwell RRL20-145 that fits your job.

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Truck Parts

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Axles & Differentials

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Rockwell

Model
RRL20-145

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Differentials, Rear For Sale

Differentials, Rear

1 - 14 of 14 listings

Rockwell RRL20-145 Rear Differential

Rockwell RRL20-145 Rear Differential

$1,850 USD

LOCKER REAR REBUILT ONE YEAR WARRANTY

Condition	Remanufactured
Rear End	4.11 ratio
Stock Number	18949
MLS Number	10533713
Category	Differentials, Rear
Last Updated	9/26/2026
Location	Douglas, GA, US
Sold By	American Truck Parts, Inc.

(877) 254-___ SHOW
NUMBERCall Seller

American Truck Parts, Inc.

Rockwell RRL20-145 Rear Differential

Rockwell RRL20-145 Rear Differential

$1,850 USD

LOCKER REAR REBUILT 12 MONTH WARRANTY

Condition	Remanufactured
Rear End	4.88 ratio
Stock Number	21072
MLS Number	10534050
Category	Differentials, Rear
Last Updated	9/26/2026
Location	Douglas, GA, US
Sold By	American Truck Parts, Inc.

(877) 254-___ SHOW
NUMBERCall Seller

American Truck Parts, Inc.

Rockwell RRL20-145 Rear Differential for a Freightliner CENTURY

2000 Rockwell RRL20-145 Rear Differential for a Freightliner CENTURY

$1,250 USD

GTO 100 DAY WARRANTY LOCKER REAR END

Condition	Used
Rear End	3.42 ratio
Fits To Make(s)	FREIGHTLINER
Fits To Model(s)	CENTURY
Stock Number	10329
MLS Number	10532673
Category	Differentials, Rear
Last Updated	9/26/2026
Location	Douglas, GA, US
Sold By	American Truck Parts, Inc.

(877) 254-___ SHOW
NUMBERCall Seller

American Truck Parts, Inc.

Rockwell RRL20-145 Rear Differential

Rockwell RRL20-145 Rear Differential

$800 USD

Rear 3.58 Ratio Locker 41 Spline

Condition	Used
Fits To Make(s)	Rockwell
Fits To Model(s)	RRL20-145
Stock Number	R11923883
MLS Number	13629849
Category	Differentials, Rear
Last Updated	6/6/2025
Location	Spokane Valley, WA, US
Sold By	Spalding Truck Parts

(833) 432-___ SHOW
NUMBERCall Seller

Spalding Truck Parts

Rockwell RRL20-145 Rear Differential

Rockwell RRL20-145 Rear Differential

$800 USD

5.57 Ratio 41 Spline Locker

Condition	Used
Fits To Make(s)	Rockwell
Fits To Model(s)	RRL20-145
Stock Number	R11134355
MLS Number	13356228
Category	Differentials, Rear
Last Updated	1/22/2025
Location	Spokane Valley, WA, US
Sold By	Spalding Truck Parts

(833) 432-___ SHOW
NUMBERCall Seller

Spalding Truck Parts

Rockwell RRL20-145 Rear Differential

Rockwell RRL20-145 Rear Differential

$800 USD

Locker 6.14 Ratio 41 Spline

Condition	Used
Fits To Make(s)	Rockwell
Fits To Model(s)	RRL20-145
Stock Number	R11134113
MLS Number	13318310
Category	Differentials, Rear
Last Updated	1/9/2025
Location	Spokane Valley, WA, US
Sold By	Spalding Truck Parts

(833) 432-___ SHOW
NUMBERCall Seller

Spalding Truck Parts

Rockwell RRL20-145 Rear Differential

Rockwell RRL20-145 Rear Differential

$1,850 USD

REBUILT 12 MONTH WARRANTY

Condition	Remanufactured
Rear End	4.33 ratio
Stock Number	26452
MLS Number	11844382
Category	Differentials, Rear
Last Updated	9/26/2026
Location	Douglas, GA, US
Sold By	American Truck Parts, Inc.

(877) 254-___ SHOW
NUMBERCall Seller

American Truck Parts, Inc.

Rockwell RRL20-145 Rear Differential for a Mack MD642

2023 Rockwell RRL20-145 Rear Differential for a Mack MD642

$1,650 USD

20-145 LOCKER REAR 5.57 RATIO

Condition	Used
Rear End	5.57 ratio
Fits To Make(s)	MACK
Fits To Model(s)	MD642
Stock Number	28282
MLS Number	14027800
Category	Differentials, Rear
Last Updated	9/26/2026
Location	Douglas, GA, US
Sold By	American Truck Parts, Inc.

(877) 254-___ SHOW
NUMBERCall Seller

American Truck Parts, Inc.

Rockwell RRL20-145 Rear Differential for a Freightliner CENTURY

2002 Rockwell RRL20-145 Rear Differential for a Freightliner CENTURY

$1,250 USD

GTO 100 DAY WARRANTY WITH LOCKER

Condition	Used
Rear End	3.42 ratio
Fits To Make(s)	FREIGHTLINER
Fits To Model(s)	CENTURY
Stock Number	14572
MLS Number	10533088
Category	Differentials, Rear
Last Updated	9/26/2026
Location	Douglas, GA, US
Sold By	American Truck Parts, Inc.

(877) 254-___ SHOW
NUMBERCall Seller

American Truck Parts, Inc.

Rockwell RRL20-145 Rear Differential for a Western Star 4900EX

2000 Rockwell RRL20-145 Rear Differential for a Western Star 4900EX

$1,250 USD

LOCKER GTO

Condition	Used
Rear End	4.11 ratio
Fits To Make(s)	WESTERN STAR
Fits To Model(s)	4900EX
Stock Number	19648
MLS Number	10533825
Category	Differentials, Rear
Last Updated	9/26/2026
Location	Douglas, GA, US
Sold By	American Truck Parts, Inc.

(877) 254-___ SHOW
NUMBERCall Seller

American Truck Parts, Inc.

Rockwell RRL20-145 Rear Differential for a Ford L8000

1996 Rockwell RRL20-145 Rear Differential for a Ford L8000

$1,250 USD

GTO LOCKER

Condition	Used
Rear End	4.10 ratio
Fits To Make(s)	FORD
Fits To Model(s)	L8000
Stock Number	19996
MLS Number	10533874
Category	Differentials, Rear
Last Updated	9/26/2026
Location	Douglas, GA, US
Sold By	American Truck Parts, Inc.

(877) 254-___ SHOW
NUMBERCall Seller

American Truck Parts, Inc.

Rockwell RRL20-145 Rear Differential for a Freightliner M2

2007 Rockwell RRL20-145 Rear Differential for a Freightliner M2

$1,250 USD

LOCKER, GTO

Condition	Used
Rear End	5.86 ratio
Fits To Make(s)	FREIGHTLINER
Fits To Model(s)	M2
Stock Number	25550
MLS Number	11184207
Category	Differentials, Rear
Last Updated	9/26/2026
Location	Douglas, GA, US
Sold By	American Truck Parts, Inc.

(877) 254-___ SHOW
NUMBERCall Seller

American Truck Parts, Inc.

Rockwell RRL20-145 Rear Differential for a Sterling AT9500

2007 Rockwell RRL20-145 Rear Differential for a Sterling AT9500

$1,250 USD

GTO

Condition	Used
Rear End	4.11 ratio
Fits To Make(s)	STERLING
Fits To Model(s)	AT9500
Stock Number	26020
MLS Number	11530525
Category	Differentials, Rear
Last Updated	9/26/2026
Location	Douglas, GA, US
Sold By	American Truck Parts, Inc.

(877) 254-___ SHOW
NUMBERCall Seller

American Truck Parts, Inc.

Rockwell RRL20-145 Rear Differential for a Kenworth T800

2004 Rockwell RRL20-145 Rear Differential for a Kenworth T800

$750 USD

GTO

Condition	Used
Rear End	3.42 ratio
Fits To Make(s)	KENWORTH
Fits To Model(s)	T800
Stock Number	23222
MLS Number	10534482
Category	Differentials, Rear
Last Updated	9/26/2026
Location	Douglas, GA, US
Sold By	American Truck Parts, Inc.

(877) 254-___ SHOW
NUMBERCall Seller

American Truck Parts, Inc.

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