Axiom Supply Front Wheel Bearing & Hub Assembly | Coarse Thread | 8x170 | 1999-2004 Ford F-250/F-350 4WD & 2000-2005 Excursion | SKU AX515025
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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 AX515025) is a complete, sealed front wheel bearing and hub unit for 1999–2004 Ford F-250 and F-350 Super Duty 4WD, and 2000–2005 Ford Excursion, equipped with coarse-thread wheel studs. Built with a proprietary hub and bearing structure that reduces hub-face deflection under load, this assembly delivers tighter steering response and improved braking stability when towing, hauling, or running oversized tires. Premium Grade 10.9 cold-formed wheel studs with a corrosion-resistant zinc-plated finish. 8x170 bolt pattern, M14-2.00 coarse thread wheel studs — confirm your application's thread specification before ordering, since a fine-thread version exists for this same year range under a different part number. Integrated ABS sensor maintains reliable signal transmission in heat, moisture, mud, and road debris. Compatible with either side of the vehicle. Installation typically takes about 2 hours, no special modifications required. Includes 4 mounting bolts and 1 O-ring. Limited lifetime warranty.
Component Specifications
| Spec | Detail |
|---|---|
| SKU / Part Number | AX515025 |
| Brand | Axiom Supply |
| Type | Complete front wheel bearing and hub assembly |
| Position | Front only — left or right spindle |
| Drivetrain | 4WD only |
| Thread | Coarse — M14-2.00 |
| Bolt Pattern | 8x170 |
| Bearing Type | Precision tapered roller bearings |
| ABS Sensor | Integrated wiring |
| Spindle Bolt Torque | 133 lb-ft |
| Caliper Bolt Torque | 166 lb-ft |
| 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 | ✓ |
| 4 mounting bolts | ✓ |
| 1 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 |
Coarse Thread vs. Fine Thread
A fine-thread version of this hub assembly is also available for the same 1999-2004 Ford F-250/F-350 4WD year range. Coarse and fine thread are not interchangeable — installing the wrong thread type will not seat correctly and can damage the spindle. Confirm your existing hub's thread specification before ordering, or verify via your Ford dealer's parts lookup using your VIN.
Verified Fitment
| Vehicle | Years | Status |
|---|---|---|
| Ford F-250 Super Duty 4WD (XL, XLT) | 1999–2004 | ✓ — Front only, coarse thread |
| Ford F-350 Super Duty 4WD SRW (Lariat) | 1999–2004 | ✓ — Front only, coarse thread |
| Ford Excursion (Limited, Eddie Bauer, King Ranch, Harley-Davidson Edition, XLS) | 2000–2005 | ✓ — Front only, coarse thread |
| 2WD F-250/F-350 Super Duty | Any | ✗ Solid front axle with different hub configuration |
| F-250/F-350 fine-thread applications | 1999–2004 | ✗ Different part number required |
| Ford Super Duty | 2005 and newer | ✗ Different hub specification |
| Ford F-150 | Any | ✗ Different platform |
Critical Compatibility
| Configuration | Notes |
|---|---|
| Fine-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
Does this fit my Excursion?
Yes, for 2000-2005 models with coarse-thread studs, including Limited, Eddie Bauer, King Ranch, Harley-Davidson Edition, and XLS trims.
How do I know if I have coarse or fine thread?
Check your existing hub directly, or look up your specific configuration using your VIN through a Ford dealer parts lookup. Coarse and fine 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.
The Obsidian Take
The AX515025 is for the 1999-2004 Ford F-250/F-350 4WD owner — or 2000-2005 Excursion owner — running coarse-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 coarse thread, not fine 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, thread specification (coarse vs. fine), and exact vehicle before ordering.
Manufacturer Data Disclaimer: Specifications sourced from Axiom Supply and authorized distributor documentation. Input data did not include Excursion fitment, confirmed compatible with this exact part number. Obsidian Forged Auto Supply is an authorized Axiom Supply dealer. Manufacturer specifications are subject to change without notice.