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Eaton RD404 Axles & Differentials For Sale

Shop used and remanufactured Eaton RD404 Axles & Differentials on MyLittleSalesman.com . Compare active listings with prices from $1,028 to $1,700. Sellers include Vander Haag's, Holst Truck Parts, Rydemore Heavy Duty Truck Parts, and more. Filter by condition, price, or year to find the Eaton RD404 that fits your job.
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Truck Parts (15)
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Axles & Differentials (15)
   Axle Housings, Rear (7)    Differentials, Rear (8)
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Showing 1 - 15 of 15 Listings

1 - 15 of 15 listings
1 - 15 of 15 listings
Eaton RD404 Rear Axle Housing for a 1996 Western Star 4900

Eaton RD404 Rear Axle Housing for a 1996 Western Star 4900

$1,395 USD
USED REAR AXLE HOUSING, RTE400 HENDRICKSON SUSPENSION, T-BAR TORQUE ARM, LATE BEAMS, 8 BOLT SPYDER, Hub Bolts: 10 PILOT, Suspension: RTE400, Brake Type: DRUM
ConditionUsed
Fits To Make(s)Western Star
Fits To Model(s)4900
Will Fit Year(s)1996
Stock Number32225-6
MLS Number13486050
CategoryAxle Housings, Rear
Last Updated3/29/2025
Location
Ucon, ID, US
Sold By
Holst Truck Parts
(833) 541-___  SHOW
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Holst Truck Parts
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 for a International Durastar (4400)

2009 Eaton RD404 Rear Differential for a International Durastar (4400)

Recently Updated
$1,028 USD
(USED) Eaton RD404 Ratio: 4.88 Side Gear Splines: 41 W/ Locker: YES Cast#: ZSTPMG015687-1 Ref# RD404
ConditionUsed
Fits To Make(s)International
Fits To Model(s)DURASTAR (4400)
Part NumberRD404
Stock Number25954355
MLS Number14228197
CategoryDifferentials, Rear
Last Updated3/25/2026
Location
Sioux Falls, SD, US
Sold By
Vander Haag's Inc.
(855) 370-___  SHOW
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Vander Haag's Inc.
Eaton RD404 Rear Differential

Eaton RD404 Rear Differential

$1,700 USD
Remanufactured Eaton RD404 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 Updated3/14/2026
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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