Product Overview
504118-2 Differential Carrier Rebuild Bearing Kit is a new independent aftermarket service kit for differential carrier rebuild work on selected DS-series axle assemblies produced before the stated design change. A differential carrier depends on correctly matched bearing surfaces, stable preload, accurate alignment, and effective sealing to keep the ring-and-pinion assembly rotating smoothly. This kit supports scheduled carrier overhaul where bearing condition, preload stability, rotational smoothness, or contamination makes continued service unsuitable.
This package groups related wear items for professional axle repair and driveline rebuilding. It does not change the axle ratio, carrier design, or installation procedure.
Structured Product Data
| Reference Part Number | 504118-2 |
|---|---|
| Product Type | Differential Carrier Rebuild Bearing Kit |
| Replacement Type | Independent Aftermarket Replacement |
| Bearing / Kit Type | Carrier Rebuild Bearing Kit |
| Compatible Axle Models | DS344 / DS404 / DS405 / DS454 |
| Axle Configuration | Axles built before June 18, 2008 |
| Condition | New |
Service and Fitment Guidance
Confirm the DS344, DS404, DS405, or DS454 axle model and verify that the axle build date is before June 18, 2008, then compare all removed components. Part-number matching alone is not enough because axle revisions, carrier positions, production changes, and previous repairs can affect the required components. Check the vehicle axle tag, service information, component markings, outside and inside diameters, widths, seal profiles, and the physical layout of the removed set.
- Inspect bearing journals, cups, bores, thrust surfaces, gears, fasteners, and lubricant before assembly.
- Use the axle maker’s current procedures for cleaning, preload, backlash, bearing adjustment, seal installation, torque values, and approved lubricant.
- Do not reuse damaged mating parts or mix unmatched bearing components. Installation should be completed by a qualified technician with appropriate measuring tools.
FAQ
Is 504118-2 a genuine branded part?
No. This is an independent aftermarket replacement compatible with selected Dana / Spicer applications. These names and reference numbers are used solely for identification and compatibility comparison; no affiliation, authorization, sponsorship, or endorsement is claimed.
How do I confirm exact compatibility?
Match the reference number, axle tag, model, configuration, carrier position, production details, dimensions, component markings, and the full physical set. Contact us with clear photos and axle identification if any detail differs.
Why does the build date matter for 504118-2?
The supported application information limits this kit to selected DS344, DS404, DS405, and DS454 axles built before June 18, 2008. Verify the axle tag and parts breakdown.
Trademark and Non-Affiliation Notice
All third-party brand names, model designations, logos, and part numbers are the property of their respective owners. They are used solely for identification and compatibility reference. This independently supplied aftermarket replacement is not an OEM or genuine branded product and is not manufactured, authorized, licensed, sponsored, affiliated with, or endorsed by any referenced trademark owner.









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