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Eaton RD404 Rear Differentials For Sale

Shop used and remanufactured Eaton RD404 Rear Differentials on MyLittleSalesman.com . Compare active listings with prices from $1,028 to $1,500. Sellers include Holst Truck Parts, Camions Lussier-Lussicam, Vander Haag's, and more. Filter by condition, price, or year to find the Eaton RD404 Rear Differential that fits your job.
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Showing 1 - 8 of 8 Rear Differential Listings

1 - 8 of 8 listings
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Eaton RD404 Rear Differential for a 1996 Western Star 4900

Eaton RD404 Rear Differential for a 1996 Western Star 4900

$1,195 USD
RDP40 RS404/ HAS LATE CASE WITH THRUST BLOCK 3.70 LOCKER WILL INSPECT IN OUR GEAR SHOP, 90 DAY WARRANTY, Ratio: 3.70 LOCKERS
ConditionUsed
Rear End3.70 ratio
Fits To Make(s)Western Star
Fits To Model(s)4900
Will Fit Year(s)1996
Part NumberRD404
Stock Number32225-4
MLS Number13486048
CategoryDifferentials, Rear
Last Updated4/1/2025
Location
Ucon, ID, US
Sold By
Holst Truck Parts
(833) 541-___  SHOW
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Holst Truck Parts
Eaton RD404 Rear Differential

Eaton RD404 Rear Differential

$1,500 USD
Remanufactured Eaton RS404 locking rear, rear differential assembly. 6.17 ratio. 1 Year warranty for parts or Swap out for another unit. $500 For Labor. Towing not covered.
ConditionRemanufactured
Rear End6.17 ratio
Fits To Make(s)EATON
Fits To Model(s)RD404
Stock NumberBP TRS RD404/6.17
MLS Number14050289
CategoryDifferentials, Rear
Last Updated1/30/2026
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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