Pair — Genuine Dexter 2.875" x 3.880" Unitized Oil Seals for 9K–10K General Duty Axles
Part Number: 10-51-L2
These genuine Dexter replacement oil seals are designed for 9,000 lb and 10,000 lb General Duty axle hubs using 12.25" × 3.375" brake drums. Sold as a pair — enough for one axle.
Dexter identifies this seal as the preferred replacement for older 10K GD hubs. It replaces both 010-051-02 and 010-051-00, offering improved clearance to prevent contact with hub bearings caused by tolerance variations.
This is a unitized dual-action seal: the inner case stays fixed to the spindle while the outer case rotates with the hub. This design reduces wear and provides superior leak control for oil-bath hub systems.
Features
- Genuine Dexter unitized seal assembly
- Designed for 9K & 10K General Duty hubs
- Dual-action design improves sealing and durability
- Internal configuration is optimized for oil-bath systems
- Replaces earlier Dexter part numbers 010-051-02 and 010-051-00
- Sold as a pair — enough for one axle
Specifications
| Inner Diameter | 2.875" |
| Outer Diameter | 3.880" |
| Seal Type | Unitized, oil-bath compatible |
| Common Hub Castings | 9-44, 8-415, 9-123 (and others) |
| Replaces | 010-051-02, 010-051-00 |
| Other References | National 370150BGO; TCM OB2838051 |
Because hub machining can vary, appearance or surface markings on the seals may differ slightly depending on Dexter’s production batch. Always confirm your hub’s inner and outer seal diameters before installation.
Additional seals ship free when combined in the same order.