Axiom Supply Bearing Spindle O-Ring | Hub Seal Replacement | 2011-2019 Chevy Silverado/GMC Sierra 2500HD & 3500HD | SKU AX568349
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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 Bearing Spindle O-Ring (SKU AX568349) is a direct-fit replacement O-ring for the spindle-to-hub assembly on 2011–2019 Chevrolet Silverado 2500HD/3500HD and GMC Sierra 2500HD/3500HD (K2XX platform), 6.6L Duramax. A worn or damaged O-ring allows moisture, dirt, and debris to enter the hub assembly, accelerating wheel bearing wear and compromising long-term reliability. Replace during hub or wheel bearing service to restore a proper contamination-resistant seal. Manufactured to factory-style dimensions for proper fitment. Use one O-ring per side — sold individually.
This SKU is for the 2011–2019 K2XX platform only. For 2001–2010, order the companion part AX568346.
Component Specifications
| Spec | Detail |
|---|---|
| SKU / Part Number | AX568349 |
| Brand | Axiom Supply |
| Type | Bearing spindle O-ring — hub seal replacement |
| Material | High-quality rubber — corrosion and wear resistant |
| Fitment | OEM-style direct fit for K2XX GM HD spindle assembly |
| Quantity | Single O-ring — use one per side serviced |
| Application | Hub and wheel bearing service on 2011–2019 GM 2500HD/3500HD 6.6L Duramax |
| Sold As | Each |
What Is and Is NOT Included
| Item | Included |
|---|---|
| 1x spindle O-ring | ✓ |
| Second O-ring for the opposite side | ✗ NOT included — order two if servicing both sides |
| Wheel bearing or hub assembly | ✗ NOT included — sold separately |
| Grease/assembly lubricant | ✗ NOT included — apply your own light film before installation |
GM HD Spindle O-Ring Platform Guide
| SKU | Years | Platform |
|---|---|---|
| AX568346 | 2001–2010 | GMT800/GMT900 |
| AX568349 (this listing) | 2011–2019 | K2XX |
| (Confirm separately) | 2020–2026 | T1XX — different hub geometry |
Verified Fitment
| Vehicle | Years | Status |
|---|---|---|
| Chevrolet Silverado 2500HD | 2011–2019 | ✓ |
| Chevrolet Silverado 3500HD | 2011–2014 | ✓ |
| GMC Sierra 2500HD | 2011–2019 | ✓ |
| GMC Sierra 3500HD | 2011–2014 | ✓ |
| Silverado/Sierra 2500HD/3500HD | 2001–2010 | ✗ Different hub geometry — order AX568346 instead |
| Silverado/Sierra 2500HD/3500HD | 2020–2026 | ✗ Different hub geometry (T1XX) — confirm correct part separately |
| Silverado/Sierra 1500 | Any | ✗ Different platform |
Critical Compatibility
| Configuration | Notes |
|---|---|
| 2010 and earlier Silverado/Sierra HD | Does not fit — different hub geometry, order AX568346 |
| 2020 and newer Silverado/Sierra HD | Does not fit — different hub geometry (T1XX), confirm correct part separately |
| Reused O-rings | Do not reuse a removed O-ring — compression set and surface wear prevent proper sealing |
| Damaged spindle/hub mating surfaces | Inspect before installing — a damaged seating surface will prevent proper sealing even with a new O-ring |
Common Questions
How many O-rings do I need?
One per side serviced. If you're doing both front wheel bearings, order two.
Can I reuse my old O-ring if it looks fine?
No. O-rings take a compression set after installation and will not seal properly a second time, even if they look undamaged.
Does this fit my 2009 Silverado 2500HD?
No. This SKU is for the 2011-2019 K2XX platform. A 2001-2010 truck needs the companion part, AX568346.
Does this fit my 2021 Sierra 3500HD?
Not confirmed. The 2020+ trucks use the T1XX platform with different hub geometry — confirm the correct part separately before ordering.
The Obsidian Take
The AX568349 is a small, inexpensive part that's easy to overlook during a wheel bearing service — but a worn or reused O-ring here is exactly the kind of failure that lets contamination into the hub and shortens the life of the new bearing you just installed. Replace it every time the hub assembly comes apart on a 2011-2019 GM 2500HD/3500HD.
The only real decision point is confirming your platform — 2001-2010 needs AX568346, 2011-2019 needs this part, and 2020+ needs a different part entirely. Order two if you're servicing both sides.
Non-Returnable Notice: Once installed, this unit is non-returnable. Confirm platform generation before ordering.
Manufacturer Data Disclaimer: Specifications sourced from Axiom Supply and authorized distributor documentation. Obsidian Forged Auto Supply is an authorized Axiom Supply dealer. Manufacturer specifications are subject to change without notice.