Match the part number, measurements and connection points that apply to your trailer.
| Bearings | Match inner and outer bearing numbers. |
|---|---|
| Seal | Match the seal number or dimensions. |
| Bolt Pattern | Verify the complete lug pattern. |
| Brake Size | Confirm when applicable. |
This complete 10,000 lb General Duty hub/drum service kit includes everything needed to replace a post-2009 12.25" × 3.375" Dexter-style hub/drum assembly. All core components are included: bearings, seal, oil cap, O-ring, and rubber plug. Races come pre-installed in the hub/drum.
| Component | Details |
|---|---|
| Hub/Drum | 10K GD, post-2009, 12.25" × 3.375" (RP8-430-05) |
| Inner Bearing | 25580 — 1.75" ID |
| Outer Bearing | 387A — 2.25" ID |
| Seal | 10-2875-06 — 2.875" × 3.88" |
| Oil Cap | 21-88 (post-’09) |
| O-Ring | 010-163-00 — for 21-88 cap |
| Center Plug | 046-032-00 — rubber plug insert for 21-88 |
Note: This kit is designed for General Duty 10K axle configurations built after 2009. It does not fit 10K Heavy Duty hubs. Always compare seal measurements, bearing numbers, and hub casting before installation.
