Axiom Supply Front Wheel Bearing & Hub Assembly | Fine Thread | 1999-2004 Ford F-250/F-350 Super Duty 4WD | SKU AX515056
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Before ordering, verify your vehicle details, current setup, and SKU with OFAS fitment support so your upgrade matches your build.
Shipping & Delivery
Free shipping is available within the lower 48 U.S. states. Large or heavy items may ship by freight, and delivery timing can vary by warehouse, carrier, and product availability.
Fitment, Shipping & Product Support
The Axiom Supply Front Wheel Bearing & Hub Assembly (SKU AX515056) is a complete, sealed front wheel bearing and hub unit for 1999–2004 Ford F-250 and F-350 Super Duty 4WD trucks equipped with fine-thread wheel studs. A worn or failing wheel bearing causes vibration, humming or grinding noise, ABS fault codes, uneven tire wear, and in severe cases unsafe wheel movement under heavy towing and hauling loads. Built with a proprietary hub and bearing structure that reduces hub-face deflection under load, delivering tighter steering response and improved braking stability. Precision tapered roller bearings, Grade 10.9 cold-formed zinc-plated wheel studs. The fine-thread design provides smooth, precise fitment for stock-style applications and reliable performance under normal to moderate loads. Integrated ABS sensor for OEM-style plug-and-play connection. Compatible with either side of the vehicle, no special modifications required. Installation typically takes about 2 hours. Includes mounting bolts and an O-ring. Limited lifetime warranty.
Component Specifications
| Spec | Detail |
|---|---|
| SKU / Part Number | AX515056 |
| Brand | Axiom Supply |
| Type | Complete front wheel bearing and hub assembly |
| Position | Front only — left or right spindle |
| Drivetrain | 4WD only |
| Thread | Fine |
| Bearing Type | Precision tapered roller bearings |
| Wheel Studs | Grade 10.9 cold-formed, zinc-plated |
| ABS Sensor | Integrated wiring |
| Hub Nut Torque | Initial 30 ft-lbs while rotating wheel, loosen 2 full turns, retighten to 17-24 ft-lbs |
| Install Time | Approximately 2 hours |
| Warranty | Limited Lifetime — original purchaser |
| Sold As | Each |
What Is and Is NOT Included
| Item | Included |
|---|---|
| Complete front bearing and hub assembly with integrated ABS wire | ✓ |
| Mounting bolts | ✓ |
| O-ring | ✓ |
| Second hub assembly for the opposite side | ✗ NOT included — purchase a second unit for both sides |
| Rear hub assembly | ✗ NOT included — this is a front-only part |
Fine Thread vs. Coarse Thread — Critical Confirmation
The 1999–2004 Ford Super Duty 4WD platform used both fine-thread and coarse-thread hub assemblies depending on production date and configuration. Installing the wrong thread type will not seat correctly and can damage the spindle. Confirm your hub thread specification before ordering — check your existing hub directly, or use your VIN in a Ford dealer parts lookup. If your hub is coarse thread, order AX515025 instead.
Ford Super Duty 4WD Hub Assembly Thread Guide
| Platform | Thread | SKU |
|---|---|---|
| 1999–2004 Ford F-250/F-350 4WD (this listing) | Fine | AX515056 |
| 1999–2004 Ford F-250/F-350 4WD | Coarse | AX515025 |
Verified Fitment
| Vehicle | Years | Status |
|---|---|---|
| Ford F-250 Super Duty 4WD (fine thread) | 1999–2004 | ✓ — Front only |
| Ford F-350 Super Duty 4WD SRW (fine thread) | 1999–2004 | ✓ — Front only |
| F-250/F-350 coarse-thread applications | 1999–2004 | ✗ Different part number — order AX515025 |
| 2WD F-250/F-350 Super Duty | Any | ✗ Solid front axle with different hub configuration |
| Ford Super Duty | 2005 and newer | ✗ Different hub specification |
| Ford F-150 | Any | ✗ Different platform |
Critical Compatibility
| Configuration | Notes |
|---|---|
| Coarse-thread hub applications | Not compatible — confirm your thread specification before ordering; installing the wrong thread damages the spindle |
| 2WD Super Duty | Not compatible — different hub configuration |
| Rear hub applications | Not covered — this is a front-only part |
| 2005 and newer Super Duty | Different hub specification — not compatible |
Common Questions
How do I know if I have fine or coarse thread?
Check your existing hub directly, or look up your specific configuration using your VIN through a Ford dealer parts lookup. Fine and coarse thread hubs are not interchangeable.
Does this fit the rear?
No. This is a front-only wheel bearing and hub assembly.
What's the torque sequence for the hub nut?
Apply an initial torque of 30 ft-lbs while rotating the wheel, loosen the nut two full turns, then rotate the brake disc and tighten to 17-24 ft-lbs.
Does this fit my F-350 dually?
Likely yes, since this is a front-only hub and the dual rear wheel configuration is a rear-axle distinction. Confirm with us before ordering if you have any doubt.
The Obsidian Take
The AX515056 is for the 1999-2004 Ford F-250/F-350 4WD owner running fine-thread front hubs and dealing with bearing noise, vibration, or ABS faults. Precision tapered roller bearings, Grade 10.9 hardware, integrated ABS sensor, about a 2-hour install with mounting bolts and an O-ring included.
The one check that matters most: confirm fine thread, not coarse thread. This era of Super Duty used both, and they are not interchangeable — installing the wrong one damages the spindle.
Non-Returnable Notice: Once installed, this assembly is non-returnable. Confirm 4WD and thread specification (fine vs. coarse) before ordering.
Manufacturer Data Disclaimer: Specifications sourced from Axiom Supply and authorized distributor documentation, consistent with the confirmed coarse-thread sibling part (AX515025) for this same platform. Obsidian Forged Auto Supply is an authorized Axiom Supply dealer. Manufacturer specifications are subject to change without notice.