Crane Axle 2005+ Ford Super Duty Unit Bearing Covers – Pair
CA01047
Crane Axle Super Duty Unit Bearing Covers are engineered to shield 2005 and newer Ford Super Duty unit bearings from mud, standing water, sand, and trail debris. Built specifically for custom off-road axles running 32-spline stub shafts—such as RCV Big Bell CV assemblies—these heavy-duty covers act as a positive barrier that locks lubrication inside the hub assembly while preventing abrasive contaminants from destroying your wheel bearings.
Precision-machined in the USA from solid 6061 aluminum and finished with a durable black anodized coating, these covers deliver superior corrosion resistance and long-term trail survivability. The integrated O-ring sealing system eliminates grease weepage during high-RPM trail running and deep water crossings. Engineered for direct bolt-on fitment, each pair installs quickly using the included stainless steel hardware.
Includes:
- (2) 6061 Aluminum Caps, Anodized Black
- (2) O-Rings
- (12) Stainless Steel Mounting Bolts
Specifications
| Specification | Details |
|---|---|
| Manufacturer | Crane Axle |
| Product Type | Unit Bearing Dust & Grease Cover |
| Material | Precision-Machined 6061 Aluminum |
| Finish | Black Anodized Coating |
| Sealing Mechanism | Integrated O-Ring Seal |
| Stub Shaft Compatibility | 32-Spline Stub Axles & RCV Big Bell CVs |
| Hardware Included | (12) Stainless Steel Mounting Bolts |
| Country of Origin | Made in USA |
Fitment
Designed for custom off-road front axles and factory applications utilizing 2005+ Ford Super Duty unit bearings.
| Make | Model | Year Range | Axle Application |
|---|---|---|---|
| Ford | F-250 / F-350 / F-450 Super Duty | 2005–Present | Front Unit Bearing Axle |
| Custom Steer Axle | Crane Magnum Knuckle & Super Duty Conversions | Custom Build | 2005+ Style Unit Bearing Hubs |
Fitment Notes
- Designed specifically for direct bolt-on fitment to 2005+ Ford Super Duty unit bearing assemblies.
- Compatible with standard 32-spline outer stub shafts and RCV Big Bell CV axle assemblies.
- Intended for heavy-duty off-road, rock crawling, rock bouncing, and Ultra4 racing applications.
FAQ
1. Why do I need aftermarket unit bearing covers for my 2005+ Super Duty hubs?
In severe off-road environments, factory dust shields can dislodge or fail to seal against deep mud, sand, and water crossings. Once abrasive debris enters the unit bearing assembly, it accelerates internal bearing wear and leads to premature failure. These billet aluminum O-ring sealed covers provide a positive, crush-proof barrier that keeps grease inside the hub and abrasive contaminants out.
2. Will these covers clear RCV Big Bell CV axle shafts?
Yes. These covers are specifically engineered with internal clearance for 32-spline outer stub shafts, including large-body RCV Big Bell CV axle assemblies commonly used in extreme rock crawling and Ultra4 competition builds.
3. How does the O-ring seal improve bearing longevity?
Unlike standard stamped-steel caps that rely on a simple friction fit or RTV silicone, the integrated O-ring creates a consistent, positive seal around the hub face. This prevents grease weepage when the hubs get hot and stops water ingress during submerged trail crossings.
4. Are these covers compatible with older pre-2005 Ford or GM unit bearings?
No. These covers are precision-machined specifically for the bolt circle and hub face geometry of 2005 and newer Ford Super Duty unit bearings (and aftermarket hubs built around the 2005+ Timken Super Duty specification).
5. What hardware is included for installation?
Each kit includes two machined 6061 aluminum caps, two sealing O-rings, and twelve corrosion-resistant stainless steel mounting bolts for a complete, direct bolt-on installation.
