UFP Spindle Wear Sleeve – 2.13" OD – Fits 3,500–4,200 lb UFP Axles
Replacement spindle wear sleeve designed for UFP (Unique Functional Products) trailer axles commonly found on many boat trailers. This sleeve replaces the factory-installed spindle seal sleeve used on UFP axles rated from 3,500 lb to 4,200 lb.
This component replaces the original sleeve installed on the spindle and provides the sealing surface for the hub grease or oil seal.
R&P Knowledge Hub
UFP trailer axles are frequently used on boat trailers such as EZ Loader and Ranger. One identifying feature of UFP axles is the axle nut retention system, which uses a flat axle nut covered by a thin stamped steel “bottle cap” style retainer secured with a cotter pin.
All UFP axles in the 3,500–4,200 lb range typically use a 1.68" grease or oil seal. If your axle does not use this seal size or does not have the bottle-cap style nut retainer, this sleeve likely will not fit your axle.
This sleeve replaces the original wear sleeve on the spindle. It is not a seal saver or aftermarket repair sleeve.
The manufacturer does not publish official dimensional specifications. Any dimensions listed are approximate and provided for reference only.
Features
- Replacement spindle wear sleeve for UFP trailer axles
- Fits many 3,500–4,200 lb UFP axle applications
- Provides sealing surface for grease or oil seal
- Common on many boat trailers
- Direct replacement for factory-installed sleeve
Specifications
| Specification | Detail |
| Part Number | 33523U |
| Outer Diameter | Approx. 2.13" |
| Height | Approx. 0.625" |
| Axle Compatibility | UFP Axles – 3,500 lb to 4,200 lb |
| Typical Seal Size | 1.68" Grease / Oil Seal |
Verify axle brand and specifications before installation.
