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Valley Truck Parts · Drivetrain
VAL RS4043363941
In stock · ships from Knoxville
This is a remanufactured rear-rear differential carrier assembly for Dana Spicer RS404 tandem axles, commonly found on Class 8 heavy-duty trucks.
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Verified fitment for 2 applications
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All confirmed applications for this part number.
International
Other applications
International
Other applications
Exact vehicle applications depend on the axle model; RS404 is a rear-rear (tag axle) differential. Verify your truck’s axle identification tag to confirm RS404, ratio, and spline count before ordering.
Part data verified against 3 catalog sources
Numbers this part supersedes or interchanges with. Showing 3 of 3.
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It replaces a worn or damaged differential in the rear drive axle of a dual‑axle setup, restoring proper torque distribution and power delivery. The unit is pre‑set with a 3.36:1 gear ratio and accepts 41‑spline axle shafts, matching the original RS404 specifications. Because it is remanufactured, it offers a cost‑effective alternative to a brand‑new OEM carrier while still meeting performance requirements for linehaul, dump, and heavy‑haul applications.
Part Number: VAL RS4043363941
VALLEY REAR DIFFERENTIAL RS404
Vendor: McMahon Truck Center
Dealer: KP Services Crossville
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