Description
The World American A6910R is a 10-speed shift knob and master range air valve assembly that bolts onto Eaton Fuller Super 10 (RT(L)O-Super 10) transmissions. It replaces the genuine Eaton Fuller A6910 valve and the superseded A-5510 unit, restoring proper range air signal to the auxiliary section so high/low range and splitter shifts engage cleanly.
Specifications
| Manufacturer | World American |
|---|---|
| Part Number | A6910R |
| Part Type | 10-Speed Air Shift Knob / Master Range Valve |
| Transmission Compatibility | Eaton Fuller Super 10 (RT(L)O-Super 10) |
| Replaces | Eaton Fuller A6910 (supersedes A-5510) |
Cross References
This part replaces or is equivalent to the following part numbers:
- Eaton / Fuller: A6910, A-6910, A6910B, A5510 (superseded)
- Freightliner: FULA6910
- Mack: 3088-A6910
- Volvo: 3972718
- S&S Truck Parts: S-E467
Applications
This shift knob fits Eaton Fuller Super 10 transmissions installed in:
- Freightliner Cascadia, Columbia, Century, Coronado, Classic XL
- Kenworth T600, T660, T680, T800, W900
- Peterbilt 379, 386, 387, 388, 389, 567, 579
- Mack CH, CHN, CXN, CV (Granite), Pinnacle
- Volvo VN, VNL, VNM, VHD
- International 9200i, 9400i, 9900i, ProStar
- Western Star 4900, 5700
Verify your transmission model and air-line configuration before ordering to confirm fitment.









