Description
The World American MU1212RUMW3 is a single-row cylindrical roller input-shaft bearing for Eaton Fuller manual transmissions, replacing Fuller 4308451 and the earlier 4301417, 4308161, and 4308401. Standard 60 × 110 × 22 mm dimensions, snap-ring style — interchanges with Link-Belt MU1212RUMW3 in industrial applications.
Specifications
| Manufacturer | World American |
|---|---|
| Part Number | MU1212RUMW3 |
| Part Type | Cylindrical Roller Bearing (Input Shaft) |
| Bore | 60 mm |
| Outer Diameter | 110 mm |
| Width | 22 mm |
| Configuration | Single row, snap ring |
| Application | Eaton Fuller manual transmission input shaft |
Cross References
This part replaces or is equivalent to the following part numbers:
- Eaton Fuller: 4308451, 4301417, 4308161, 4308401
- Spicer: 4308451
- S&S Truck Parts: S-11966
- Link-Belt: MU1212RUMW3
Applications
This bearing fits Eaton Fuller heavy-duty manual transmissions that use the 60 × 110 × 22 mm cylindrical roller input-shaft bearing. Verify your transmission model and parts breakdown before ordering — input bearing variants differ across the RT, RTO, RTLO, and FRO families.
Match the bearing dimensions and your transmission’s parts list to confirm fitment.









