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Eaton RDP40 Axles & Differentials For Sale

Browse Eaton RDP40 Axles & Differentials on MyLittleSalesman.com and compare listings with prices from $1,250 to $1,700. Sellers include Garabedian Equipment, Vander Haag's, and Rydemore Heavy Duty Truck Parts. Filter by condition, price, or year to quickly narrow down to the right Eaton RDP40.
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   Axle Housings, Rear (1)    Differentials, Rear (8)
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RDP40 (9)
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Showing 1 - 9 of 9 Listings

1 - 9 of 9 listings
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Eaton RDP40 Rear Axle Housing for a Peterbilt 579

2017 Eaton RDP40 Rear Axle Housing for a Peterbilt 579

$1,250 USD
Eation Rear Axle Housing, RDP40, w/ Torque Rod Bracket, 10 Hole Pilot, Air Drum Brakes, ABS. P/N 321282. Removed From 2017 Peterbilt Flex Air Suspension.
ConditionUsed
Fits To Make(s)PETERBILT
Fits To Model(s)579
Stock Number1943-28
MLS Number14044349
CategoryAxle Housings, Rear
Last Updated4/8/2026
Location
Fresno, CA, US
Sold By
Garabedian Equipment
(855) 794-___  SHOW
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Garabedian Equipment
Eaton RDP40 Rear Differential

Eaton RDP40 Rear Differential

$1,700 USD
Remanufactured Eaton RDP40 locking rear, rear differential assembly. 5.57 ratio. 1 Year warranty for parts or Swap out for another unit. $500 For Labor. Towing not covered
ConditionRemanufactured
Rear End5.57 ratio
Fits To Make(s)EATON
Fits To Model(s)RDP40
Stock NumberBP TRS RDP40/5.57
MLS Number14050357
CategoryDifferentials, Rear
Last Updated3/2/2026
Location
Fitchburg, MA, US
Sold By
Rydemore Heavy Duty Truck Parts
(888) 519-___  SHOW
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Rydemore Heavy Duty Truck Parts
Eaton RDP40 Rear Differential

Eaton RDP40 Rear Differential

$1,500 USD
Remanufactured Eaton RDP40 locking rear, rear differential assembly. 3.90 ratio. 41 Spline. 1 Year warranty for parts or Swap out for another unit. $500 For Labor. Towing not covered.
ConditionRemanufactured
Rear End3.90 ratio
Fits To Make(s)EATON
Fits To Model(s)RDP40
Stock NumberRyd RDP40/3.90/41L
MLS Number14127175
CategoryDifferentials, Rear
Last Updated2/5/2026
Location
Fitchburg, MA, US
Sold By
Rydemore Heavy Duty Truck Parts
(888) 519-___  SHOW
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Rydemore Heavy Duty Truck Parts
Eaton RDP40 Rear Differential

Eaton RDP40 Rear Differential

$1,250 USD
Remanufactured Eaton RDP40 rear, rear differential assembly. 5.29 ratio. 1 Year warranty for parts or Swap out for another unit. $500 For Labor. Towing not covered
ConditionRemanufactured
Rear End5.29 ratio
Fits To Make(s)EATON
Fits To Model(s)RDP40
Stock NumberBP TRS RDP40/5.26
MLS Number14050756
CategoryDifferentials, Rear
Last Updated12/18/2025
Location
Fitchburg, MA, US
Sold By
Rydemore Heavy Duty Truck Parts
(888) 519-___  SHOW
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Rydemore Heavy Duty Truck Parts
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