Oil Seal 3.125 inch ID x 4.50 inch OD
Replaces Dexter 10-56 – Fits 10K-HD, 12K, 15K Dexter and 12K–16K Lippert Axles
Part Number: 10-3125-08
Replacement oil seal used on many heavy-duty trailer axle assemblies. Commonly replaces Dexter part number 10-56.
Fits many Dexter 10K-HD, 12K, and 15K axles and select Lippert 12K–16K axles. Includes one seal.
Important Fitment Notes
This seal does not fit Dexter 10K General Duty (GD) axles.
It also does not fit Lippert (LCI) 10K axle configurations.
Always confirm hub casting numbers and measurements before ordering.
Features
- Replaces Dexter 10-56
- 3.125 inch inner diameter
- 4.50 inch outer diameter
- Used on many 10K-HD to 15K heavy-duty axle hubs
- Single seal included
Specifications
| Specification | Detail |
| Inner Diameter | 3.125 inch |
| Outer Diameter | 4.50 inch |
| Dexter Reference | 10-56 |
| AL-KO Reference | 568217 |
| Hayes Reference | 091023 |
| Lippert Application | Common on 12K–16K axle assemblies |
Common Hub Casting Numbers
| Manufacturer | Casting Numbers |
| Dexter | 9-27, 8-214, 8-216, 8-401, 9-28 |
| AL-KO | 090814 |
Verify seal dimensions and hub casting number before installation.
