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Heavy Duty Truck Parts

New and Used 3.21 (Ratio) For Sale

Find new and used Semi Truck 3.21 (Ratio) for sale in stock near you with fast delivery. Over 200 18-wheeler parts including Cabs, Engine Parts, Fuel Tanks, Differentials, and more.

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247 Results for Parts

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37 Canada 210 United States

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11 Trucks for Parts Differentials & Differential Parts 1 Axles, Complete Fronts 16 Axles, Complete Rears 7 Complete Axle-Front Rears 6 Complete Axle-Rear Rears 4 Differential Cases 1 Differential Cores 1 Front Drive Steer Axle 53 Front Rears (Tandem Front) 3 Gear Sets 123 Rear Rears (Tandem Rear or Single) 20 Tandem Cutoffs 1 Miscellaneous

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COMPLETE RECYCLING GROUP

26

DEERFIELD TRUCKS INC.

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CASEY'S TRUCK SALVAGE

19

CAROLINA TRUCK PARTS

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4-TRUCKS ENTERPRISES LLC

12

ARKANSAS TRUCK CENTER

11

HOLST TRUCK PARTS

9

LUSSIER CENTRE DU CAMION

9

RYDEMORE HEAVY DUTY TRUCK PARTS INC

6

G & J TRUCK SALES

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NEAL'S AUTOMOTIVE

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LARRY SCHMIDT TRUCK PARTS & SALES INC.

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WHITE & BRADSTREET INC.

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BADGER TRUCK PARTS (Canada)

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EMPIRE TRUCK PARTS

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MANDER'S DIESEL REPAIR, INC.

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P & R HEAVY TRUCKS

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ABBOTSFORD USED TRUCK & PARTS

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JACK LYONS TRUCK PARTS

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RED RAM SALES LTD.

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SAM'S RIVERSIDE TRUCK PARTS

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ARIZONA TRUCK PARTS

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BJ'S GEARS ENTERPRISE INC

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CA TRUCK PARTS, INC.

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CONCRETE MOBILITY/MN HEAVY TRUCKS

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DELAUTO USED TRUCK PARTS INC.

2

LES CAMIONS GILBERT INC.

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LOEWEN SALVAGE

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LOMOCA INC

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OLIVERA TRUCK PARTS INC.

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PARKER BROS. INC.

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THE TRUCK SHOP OF BILLINGS INC.

1

AMERICAN TRUCK SALES & SALVAGE, INC.

1

BOOTS AND HANKS TRUCK PARTS INC (Palmyra)

1

GARABEDIAN EQUIP. CO., INC.

1

J & L TRUCK RECYCLING LTD

1

J & M TRUCK SALES

1

OWENSBORO TRUCK SALES

1

PLATINUM TRUCK PARTS

1

ROCKY MOUNTAIN TRUCK PARTS

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SCHOTT'S REPAIR SERVICE INC

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Used 2016 Meritor/Rockwell RS23-160 Rear Rear (Tandem Rear or Single)

Differentials & Differential Parts / Rear Rears (Tandem Rear or Single)

Elkton, Maryland, US

Price: $849.99

Stock #: P-4598

Truck Year: 2016

Differential Make (Rear): Meritor/Rockwell

Differential Model (Rear): RS23-160

(Used) 2016 Freightliner M2 112 Medium Duty, COMPLETE REAR DIFFERENTIAL GEARS ONLY- Part Number:... more

1-855-272-6992 Text Seller More Details

Complete Recycling Group

Used 2013 Meritor/Rockwell RT40-145A Rear Rear (Tandem Rear or Single)

Differentials & Differential Parts / Rear Rears (Tandem Rear or Single)

Elkton, Maryland, US

Price: $994.98

Stock #: P-13960

Truck Year: 2013

Differential Make (Rear): Meritor/Rockwell

Differential Model (Rear): RT40-145A

(Used) 2013 Freightliner Cascadia 125, REAR DIFFERENTIAL GEARS ONLY (REAR REARS)- Make:... more

1-855-272-6992 Text Seller More Details

Complete Recycling Group

Used 2013 Meritor/Rockwell RT40-145A Front Rear (Tandem Front)

Differentials & Differential Parts / Front Rears (Tandem Front)

Elkton, Maryland, US

Price: $994.98

Stock #: P-13961

Truck Year: 2013

Differential Make (Front): Meritor/Rockwell

Differential Model (Front): RT40-145A

(Used) 2013 Freightliner Cascadia 125, REAR DIFFERENTIAL GEARS ONLY (FRONT REARS)- Make:... more

1-855-272-6992 Text Seller More Details

Complete Recycling Group

Used ROCKWELL RSL-23-160 Rear Rear (Tandem Rear or Single)

Differentials & Differential Parts / Rear Rears (Tandem Rear or Single)

Fitchburg, Massachusetts, US

Price: $850.00

Stock #: Ryd RSL-23160/3.21

Differential Make (Rear): ROCKWELL

Differential Model (Rear): RSL-23-160

Good used Rockwell RSL-23-160 full locking rear, rear differential assembly. 3.21 ratio. 90 day... more

1-855-522-0609 More Details

Rydemore Heavy Duty Truck Parts Inc

Used ROCKWELL RS-20-145 Rear Rear (Tandem Rear or Single)

Differentials & Differential Parts / Rear Rears (Tandem Rear or Single)

Fitchburg, Massachusetts, US

Price: $500.00

Stock #: Ryd RS-20-145/3.21/

Differential Make (Rear): ROCKWELL

Differential Model (Rear): RS-20-145

Good used Rockwell RS-20-145 rear, rear differential assembly. 3.21 Ratio. 90 day guarantee... more

1-855-522-0609 More Details

Rydemore Heavy Duty Truck Parts Inc

Used ROCKWELL RS-23-160 Rear Rear (Tandem Rear or Single)

Differentials & Differential Parts / Rear Rears (Tandem Rear or Single)

Fitchburg, Massachusetts, US

Price: $500.00

Stock #: Ryd RS-23-160/3.21/

Differential Make (Rear): ROCKWELL

Differential Model (Rear): RS-23-160

Good used Rockwell RS-23-160 rear, rear differential assembly. 3.21 ratio. 90 day guarantee for... more

1-855-522-0609 More Details

Rydemore Heavy Duty Truck Parts Inc

Used Meritor/Rockwell RR/RS23160 Differential Case

Differentials & Differential Parts / Differential Cases

Barnesville, Minnesota, US

Price: $850.00

Stock #: P-1031

Differential Make: Meritor/Rockwell

Differential Model: RR/RS23160

Nice used Freightliner Single axle housing with suspension and 3.21 differential. Comes loaded as... more

1-866-751-4232 More Details

J & M Truck Sales

Used MERITOR/ROCKWELL 186E Miscellaneous

Miscellaneous

Phoenix, Arizona, US

Price: $850.00

Stock #: 4484

Truck Make: MERITOR/ROCKWELL

Truck Model: 186E

Part type: Differential - Rear Rear - GOOD CLEAN AND INSPECTED SINGLE AXLE ROCKWELL 186E... more

1-866-704-4473 More Details

American Truck Sales & Salvage, Inc.

Used 2013 Meritor/Rockwell RR20145 Rear Rear (Tandem Rear or Single)

Differentials & Differential Parts / Rear Rears (Tandem Rear or Single)

Fresno, California, US

Price: $400.00

Stock #: 745-4

Truck Year: 2013

Differential Make (Rear): Meritor/Rockwell

Differential Model (Rear): RR20145

RR20145 - 3.21 Ratio - Pullout - P/N B1-3200M1885-321. DIFF ONLY, HOUSING SOLD SEPARATELY. -... more

1-877-781-7766 Text Seller More Details

Garabedian Equip. Co., Inc.

Used Meritor/Rockwell RR46160 Rear Rear (Tandem Rear or Single)

Differentials & Differential Parts / Rear Rears (Tandem Rear or Single)

Beauce, Quebec, CA

Price: $1,273.50 ^**

Stock #: 30193DI

Differential Make (Rear): Meritor/Rockwell

Differential Model (Rear): RR46160

46 000lbs, Arrière, Pas de Lock, no core + 400$ 46 000lbs, Rear, No Lock, no core +... more

1-855-241-6431 More Details

Les Camions Gilbert Inc.

** USD --- WE SHIP ANYWHERE IN USA & CANADA ---

Rebuilt ROCKWELL RT 40145 F Front Rear (Tandem Front)

Differentials & Differential Parts / Front Rears (Tandem Front)

West Sacremento, California, US

Price: $2,295.00

Stock #: R-2588

Differential Make (Front): ROCKWELL

Differential Model (Front): RT 40145 F

PART#: RT40145F RATIO: 3:21 PROCESS: Rebuilt by Expert gear and rebuild specialists with... more

1-888-979-9835 More Details

Bj's Gears Enterprise Inc

Rebuilt EATON S23770 Front Rear (Tandem Front)

Differentials & Differential Parts / Front Rears (Tandem Front)

West Sacremento, California, US

Price: $2,650.00

Stock #: R-2597

Differential Make (Front): EATON

Differential Model (Front): S23770

PART#: S23770 RATIO: 3:21 PROCESS: Rebuilt by Expert gear and rebuild specialists with 90+... more

1-888-979-9835 More Details

Bj's Gears Enterprise Inc

Used 2012 Meritor/Rockwell RD20145NCN5211 321 Rear Rear (Tandem Rear or Single)

Differentials & Differential Parts / Rear Rears (Tandem Rear or Single)

Elkton, Maryland, US

Price: $849.98

Stock #: P-54228

Truck Year: 2012

Differential Make (Rear): Meritor/Rockwell

Differential Model (Rear): RD20145NCN5211 321

(Used) 2012 Peterbilt 384, COMPLETE REAR DIFFERENTIAL GEARS ONLY- Part Number:... more

1-855-272-6992 Text Seller More Details

Complete Recycling Group

Used 2012 Meritor/Rockwell RD20145NCN5211 321 Front Rear (Tandem Front)

Differentials & Differential Parts / Front Rears (Tandem Front)

Elkton, Maryland, US

Price: $849.98

Stock #: P-54217

Truck Year: 2012

Differential Make (Front): Meritor/Rockwell

Differential Model (Front): RD20145NCN5211 321

(Used) 2012 Peterbilt 384, COMPLETE FRONT DIFFERENTIAL GEARS ONLY- Part Number:... more

1-855-272-6992 Text Seller More Details

Complete Recycling Group

Used Meritor/Rockwell RR20-145 Rear Rear (Tandem Rear or Single)

Differentials & Differential Parts / Rear Rears (Tandem Rear or Single)

Madera, California, US

Price: $750.00

Stock #: GJM-3200-K-1675

Differential Make (Rear): Meritor/Rockwell

Differential Model (Rear): RR20-145

Good Used Takeout Rear Rear Differential Meritor/Rockwell ratio 3.21 casting 3200-K-1675

1-855-952-1801 More Details

G & J Truck Sales

Used ROCKWELL 186E Rear Rear (Tandem Rear or Single)

Differentials & Differential Parts / Rear Rears (Tandem Rear or Single)

Fitchburg, Massachusetts, US

Price: $600.00

Stock #: Ryd 186E/3.21/46

Differential Make (Rear): ROCKWELL

Differential Model (Rear): 186E

Good used Rockwell 186E locking rear, rear differential assembly. 3.21 ratio. 90 day guarantee... more

1-855-522-0609 More Details

Rydemore Heavy Duty Truck Parts Inc

Used 2007 Meritor/Rockwell RD20-145 Tandem Cutoff

Differentials & Differential Parts / Tandem Cutoffs

Elkton, Maryland, US

Price: $2,995.00

Stock #: P-22008

Truck Year: 2007

Differential Make (Tandem): Meritor/Rockwell

Differential Model (Tandem): RD20-145

(Used) 2007 International 9400I, TANDEM CUTOFF- Make: Meritor, Model: RD-20-145, Ratio:... more

1-855-272-6992 Text Seller More Details

Complete Recycling Group

2007 Freightliner ST120 Truck for Parts

Trucks for Parts

Sumter, South Carolina, US

Stock #: 2204

Truck Year: 2007

Truck Make: Freightliner

Truck Model: ST120

NAME on truck Michael P Trucking ECM PN 120 RADIATOR PN A05-34822-000 CAC: BHTD3523 TURBO Twin... more

1-833-300-0586 More Details

Carolina Truck Parts

2011 International PROSTAR Truck for Parts

Trucks for Parts

Sumter, South Carolina, US

Stock #: 2277

Truck Year: 2011

Truck Make: International

Truck Model: PROSTAR

FRONT LINE TRUCK Name on truck D&B ECM PN 3007009C1 RADIATOR PN 2604295C91 TURBO PN low:... more

1-833-300-0586 More Details

Carolina Truck Parts

1993 Freightliner FLD120 Truck for Parts

Trucks for Parts

Sumter, South Carolina, US

Stock #: 2222

Truck Year: 1993

Truck Make: Freightliner

Truck Model: FLD120

TOMLINSON FARMS Zan Tomlinson *Do not pull parts til ran out.* NO TITLE call if needed ECM PN... more

1-833-300-0586 More Details

Carolina Truck Parts

Used 2017 Meritor/Rockwell RR20145NFN5243 321 Complete Axle-Rear Rear

Differentials & Differential Parts / Complete Axle-Rear Rears

Elkton, Maryland, US

Stock #: P-66749

Truck Year: 2017

Differential Make (Rear): Meritor/Rockwell

Differential Model (Rear): RR20145NFN5243 321

(Used) 2017 Volvo VNL, COMPLETE REAR REAR TANDEM- Serial Number: FOR03687215, Part Number:... more

1-855-272-6992 Text Seller More Details

Complete Recycling Group

Used 2017 Meritor/Rockwell RR20145NFN5243 321 Rear Rear (Tandem Rear or Single)

Differentials & Differential Parts / Rear Rears (Tandem Rear or Single)

Elkton, Maryland, US

Stock #: P-66753

Truck Year: 2017

Differential Make (Rear): Meritor/Rockwell

Differential Model (Rear): RR20145NFN5243 321

(Used) 2017 Volvo VNL, COMPLETE REAR DIFFERENTIAL GEARS ONLY- Serial Number: FOR03687215, Part... more

1-855-272-6992 Text Seller More Details

Complete Recycling Group

Used 2016 Meritor/Rockwell RS23-161 Rear Rear (Tandem Rear or Single)

Differentials & Differential Parts / Rear Rears (Tandem Rear or Single)

Elkton, Maryland, US

Stock #: P-80157

Truck Year: 2016

Differential Make (Rear): Meritor/Rockwell

Differential Model (Rear): RS23-161

(Used) 2016 Freightliner Cascadia 125, COMPLETE DIFFERENTIAL GEARS ONLY- Part Number:... more

1-855-272-6992 Text Seller More Details

Complete Recycling Group

Used 2012 Meritor/Rockwell RD20145NCN5211 321 Complete Axle-Rear Rear

Differentials & Differential Parts / Complete Axle-Rear Rears

Elkton, Maryland, US

Stock #: P-54223

Truck Year: 2012

Differential Make (Rear): Meritor/Rockwell

Differential Model (Rear): RD20145NCN5211 321

(Used) 2012 Peterbilt 384, COMPLETE REAR REAR TANDEM- Part Number: C05-210201G3E10321, Serial... more

1-855-272-6992 Text Seller More Details

Complete Recycling Group

Used 2002 Meritor/Rockwell RS23-160 Rear Rear (Tandem Rear or Single)

Differentials & Differential Parts / Rear Rears (Tandem Rear or Single)

Elkton, Maryland, US

Stock #: P-115162

Truck Year: 2002

Differential Make (Rear): Meritor/Rockwell

Differential Model (Rear): RS23-160

(Used) 2002 Sterling L7500, DIFFERENTIAL GEARS ONLY- Part Number: 3200S1891, Serial Number:... more

1-855-272-6992 Text Seller More Details

Complete Recycling Group

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COMPLETE RECYCLING GROUP 47
DEERFIELD TRUCKS INC. 26
CASEY'S TRUCK SALVAGE 21
CAROLINA TRUCK PARTS 19
4-TRUCKS ENTERPRISES LLC 12
ARKANSAS TRUCK CENTER 12
HOLST TRUCK PARTS 11
LUSSIER CENTRE DU CAMION 9
RYDEMORE HEAVY DUTY TRUCK PARTS INC 9
G & J TRUCK SALES 6
NEAL'S AUTOMOTIVE 6
LARRY SCHMIDT TRUCK PARTS & SALES INC. 5
WHITE & BRADSTREET INC. 5
BADGER TRUCK PARTS (Canada) 4
EMPIRE TRUCK PARTS 4
MANDER'S DIESEL REPAIR, INC. 4
P & R HEAVY TRUCKS 4
ABBOTSFORD USED TRUCK & PARTS 3
JACK LYONS TRUCK PARTS 3
RED RAM SALES LTD. 3
SAM'S RIVERSIDE TRUCK PARTS 3
ARIZONA TRUCK PARTS 2
BJ'S GEARS ENTERPRISE INC 2
CA TRUCK PARTS, INC. 2
CONCRETE MOBILITY/MN HEAVY TRUCKS 2
DELAUTO USED TRUCK PARTS INC. 2
LES CAMIONS GILBERT INC. 2
LOEWEN SALVAGE 2
LOMOCA INC 2
OLIVERA TRUCK PARTS INC. 2
PARKER BROS. INC. 2
THE TRUCK SHOP OF BILLINGS INC. 2
AMERICAN TRUCK SALES & SALVAGE, INC. 1
BOOTS AND HANKS TRUCK PARTS INC (Palmyra) 1
GARABEDIAN EQUIP. CO., INC. 1
J & L TRUCK RECYCLING LTD 1
J & M TRUCK SALES 1
OWENSBORO TRUCK SALES 1
PLATINUM TRUCK PARTS 1
ROCKY MOUNTAIN TRUCK PARTS 1
SCHOTT'S REPAIR SERVICE INC 1

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New and Used 3.21 (Ratio) For Sale

Find new and used Semi Truck 3.21 (Ratio) for sale in stock near you with fast delivery. Over 200 18-wheeler parts including Cabs, Engine Parts, Fuel Tanks, Differentials, and more.

Price: $849.99

Price: $994.98

Price: $994.98

Price: $850.00

Price: $500.00

Price: $500.00

Price: $850.00

Price: $850.00

Price: $400.00

Price: $1,273.50 **

Price: $2,295.00

Price: $2,650.00

Price: $849.98

Price: $849.98

Price: $750.00

Price: $600.00

Price: $2,995.00

Price: $1,273.50 ^**