Bearing Kit for 3,700 lb. UFP Trailer Axles with 2.56" Vault Seal
A curated hub service kit containing inner and outer bearings, matching races, and a 2.56-inch Vault seal for compatible 3,700 lb. UFP trailer axle applications.
Key Measurements & Specs
| Specification | Detail |
|---|---|
| SKU | BK2-256-VAULT |
| Product Type | Trailer hub bearing and seal kit |
| Axle Application | Compatible 3,700 lb. UFP applications |
| Seal Size | 1.68" ID x 2.56" OD |
| Inner Bearing | L68149 — 1.378" ID |
| Outer Bearing | L44649 — 1.0625" ID |
| Quantity Included | One complete single-hub service kit |
Fitment / Application
| Category | Details |
|---|---|
| Trailer System | UFP-style trailer hub using the listed bearings, races, and Vault seal |
| Primary Fit | Compatible 3,700 lb. UFP axle applications |
| Typical Use | Boat and marine trailer hub maintenance |
| Fitment Method | Match the existing bearing numbers, race dimensions, and seal dimensions |
| Important Note | Axle capacity alone does not confirm fitment. Verify every component before ordering. |
Top Features
| Feature | Buyer Benefit |
|---|---|
| Single-Hub Kit | Provides the listed bearing, race, and seal components for servicing one compatible hub. |
| 2.56" Vault Seal | Includes the specified 1.68" ID x 2.56" OD seal configuration. |
| Matched Races | Includes the corresponding inner and outer bearing races shown in the kit configuration. |
| Special UFP Inner Race | Includes the L68110 race with a 2.328" outside diameter. |
R&P Knowledge Hub
Compatibility: Intended for compatible UFP trailer hubs using L68149 and L44649 bearings, the listed matching races, and a 2.56-inch outside-diameter Vault seal.
Axle Application: Commonly associated with compatible 3,700 lb. UFP trailer axle applications. Verify the installed hub components before ordering.
Installation Notes: Clean the hub thoroughly, inspect all bearing and seal contact surfaces, and install the new races evenly without damaging their seating surfaces.
Performance Insight: Correct bearing, race, and seal matching is essential. Similar-looking parts can have different dimensions and should not be selected by appearance or axle rating alone.
Features
Complete Single-Hub Component Set
Includes one inner bearing, one inner race, one outer bearing, one outer race, and one Vault seal.
3,700 lb. UFP Application
Configured for compatible UFP trailer axle hubs using the listed component numbers and dimensions.
2.56-Inch Vault Seal
Includes the 32123 seal measuring 1.68 inches inside diameter by 2.56 inches outside diameter.
Special UFP Inner Race
Includes the L68110 inner race with the specified 2.328-inch outside diameter.
Included Components
| Quantity | Part Number | Included Item |
|---|---|---|
| 1 | 32123 | Vault seal — 1.68" inside diameter x 2.56" outside diameter |
| 1 | L44610 | Outer bearing race — 1.9800" outside diameter |
| 1 | L44649 | Outer bearing — 1.0625" inside diameter |
| 1 | L68110 | Special UFP inner bearing race — 2.328" outside diameter |
| 1 | L68149 | Inner bearing — 1.378" inside diameter |
