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Detroit R21-4N Axles & Differentials For Sale

Shop used Detroit R21-4N Axles & Differentials on MyLittleSalesman.com . Compare active listings with prices available. Sellers include CRG Heavy Truck Parts. Filter by condition, price, or year to find the Detroit R21-4N that fits your job.
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Truck Parts (7)
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Axles & Differentials (7)
   Axle Assemblies, Rear (3)    Axle Housings, Rear (2)    Differentials, Rear (2)
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Detroit (7)
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R21-4N (7)
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Showing 1 - 7 of 7 Listings

1 - 7 of 7 listings
1 - 7 of 7 listings
Detroit R21-4N Rear Differential for a 2016 Freightliner M2 106

Detroit R21-4N Rear Differential for a 2016 Freightliner M2 106

Contact for price
(Used) 2016 Freightliner M2 106, DIFFERENTIAL GEARS ONLY- Part Number: C11-00008-330, Serial Number: 742821-A137102, Make: Detroit, Model: R21-4N, Ratio: 5.56, Capacity: 20,000 Lbs,...
ConditionUsed
Rear End5.56 ratio
Fits To Make(s)Freightliner
Fits To Model(s)M2 106
Will Fit Year(s)2016
Part NumberC11-00008-330
Stock NumberP-505197
MLS Number14428162
CategoryDifferentials, Rear
Last Updated6/14/2026
Location
Elkton, MD, US
Sold By
CRG Heavy Truck Parts
(844) 402-___  SHOW
NUMBERCall Seller
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CRG Heavy Truck Parts
Detroit R21-4N Rear Axle Housing for a 2016 Freightliner M2 106

Detroit R21-4N Rear Axle Housing for a 2016 Freightliner M2 106

Contact for price
(Used) 2016 Freightliner M2 106, DIFFERENTIAL HOUSING ONLY- Part Number: C11-00008-330, Serial Number: 742821-A137102, Make: Detroit, Model: R21-4N, Ratio: 5.56, Capacity: 20,000 Lbs,...
ConditionUsed
Fits To Make(s)Freightliner
Fits To Model(s)M2 106
Will Fit Year(s)2016
Part NumberC11-00008-330
Stock NumberP-505194
MLS Number14428159
CategoryAxle Housings, Rear
Last Updated6/14/2026
Location
Elkton, MD, US
Sold By
CRG Heavy Truck Parts
(844) 402-___  SHOW
NUMBERCall Seller
Email Seller
Save
CRG Heavy Truck Parts
Detroit R21-4N Rear Axle Assembly for a 2016 Freightliner M2 106

Detroit R21-4N Rear Axle Assembly for a 2016 Freightliner M2 106

Contact for price
(Used) 2016 Freightliner M2 106, COMPLETE REAR DIFFERENTIAL- Part Number: C11-00008-330, Serial Number: 742821-A137102, Make: Detroit, Model: R21-4N, Ratio: 5.56, Capacity: 20,000 Lbs, Hub...
ConditionUsed
Rear End5.56 ratio
Fits To Make(s)Freightliner
Fits To Model(s)M2 106
Will Fit Year(s)2016
Part NumberC11-00008-330
Stock NumberP-505191
MLS Number14428156
CategoryAxle Assemblies, Rear
Last Updated6/14/2026
Location
Elkton, MD, US
Sold By
CRG Heavy Truck Parts
(844) 402-___  SHOW
NUMBERCall Seller
Email Seller
Save
CRG Heavy Truck Parts
Detroit R21-4N Rear Axle Assembly for a 2016 Freightliner M2 106

Detroit R21-4N Rear Axle Assembly for a 2016 Freightliner M2 106

Contact for price
(Used) 2016 Freightliner M2 106, COMPLETE REAR AXLE- Make: Detroit, Model: R21-4N, Capacity: 21,000 Lbs, Ratio: 5.56, Hub Bolts: 10, Brake Type: Drum, Serial Number: 742821A110903, For...
ConditionUsed
Rear End5.56 ratio
Fits To Make(s)Freightliner
Fits To Model(s)M2 106
Will Fit Year(s)2016
Stock NumberP-35470
MLS Number11764227
CategoryAxle Assemblies, Rear
Last Updated5/13/2026
Location
Elkton, MD, US
Sold By
CRG Heavy Truck Parts
(844) 402-___  SHOW
NUMBERCall Seller
Email Seller
Save
CRG Heavy Truck Parts
Detroit R21-4N Rear Axle Assembly for a 2017 Freightliner M2 106

Detroit R21-4N Rear Axle Assembly for a 2017 Freightliner M2 106

Contact for price
(Used) 2017 Freightliner M2 106, COMPLETE REAR DIFFERENTIAL- Part Number: C11-00008-319, Serial Number: 742821-A146375, Make: Detroit, Model: R21-4N, Ratio: 5.56, Capacity: 21,000 Lbs, ...
ConditionUsed
Rear End5.56 ratio
Fits To Make(s)Freightliner
Fits To Model(s)M2 106
Will Fit Year(s)2017
Part NumberC11-00008-319
Stock NumberP-104032
MLS Number13634141
CategoryAxle Assemblies, Rear
Last Updated5/13/2026
Location
Elkton, MD, US
Sold By
CRG Heavy Truck Parts
(844) 402-___  SHOW
NUMBERCall Seller
Email Seller
Save
CRG Heavy Truck Parts
Detroit R21-4N Rear Axle Housing for a 2017 Freightliner M2 106

Detroit R21-4N Rear Axle Housing for a 2017 Freightliner M2 106

Contact for price
(Used) 2017 Freightliner M2 106, COMPLETE DIFFERENTIAL HOUSING ONLY- Part Number: C11-00008-319, Serial Number: 742821-A146375, Make: Detroit, Model: R21-4N, Ratio: 5.56, Capacity: 21,000...
ConditionUsed
Fits To Make(s)Freightliner
Fits To Model(s)M2 106
Will Fit Year(s)2017
Part NumberC11-00008-319
Stock NumberP-104033
MLS Number13634142
CategoryAxle Housings, Rear
Last Updated5/13/2026
Location
Elkton, MD, US
Sold By
CRG Heavy Truck Parts
(844) 402-___  SHOW
NUMBERCall Seller
Email Seller
Save
CRG Heavy Truck Parts
Detroit R21-4N Rear Differential for a 2017 Freightliner M2 106

Detroit R21-4N Rear Differential for a 2017 Freightliner M2 106

Contact for price
(Used) 2017 Freightliner M2 106, COMPLETE DIFFERENTIAL GEARS ONLY- Part Number: C11-00008-319, Serial Number: 742821-A146375, Make: Detroit, Model: R21-4N, Ratio: 5.56, Capacity: 21,000 Lbs...
ConditionUsed
Rear End5.56 ratio
Fits To Make(s)Freightliner
Fits To Model(s)M2 106
Will Fit Year(s)2017
Part NumberC11-00008-319
Stock NumberP-104034
MLS Number13634143
CategoryDifferentials, Rear
Last Updated5/13/2026
Location
Elkton, MD, US
Sold By
CRG Heavy Truck Parts
(844) 402-___  SHOW
NUMBERCall Seller
Email Seller
Save
CRG Heavy Truck Parts
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