Eaton Fuller FO-8406A-AW3 Parts Manual
This is the Eaton Fuller Illustrated Parts List covering the FO-8406A-AW3 transmission. Use it to identify every serviceable part in your unit — assemblies, gears, shafts, housings and seals — before you order replacements.
| Models covered | FO-8406A-AW3 |
| Transmission type | 6-speed, twin-countershaft, heavy duty |
| Document | Illustrated Parts List (Eaton Fuller) |
| Length | 7 pages |
| Format | PDF — view below or download free |
What’s inside
- Service kits & assemblies with recommended stocking quantities
- Mainshaft & countershaft gear groups
- Drive gears, idler & auxiliary drive gears
- Case, clutch & shift-bar housings
- Shift lever, forks & selector assemblies
- Bearings, seals, snap rings & small parts
- Air-shift and range-control components (where fitted)
- Exploded parts diagrams with OEM part numbers
Read the manual
This is the complete factory parts breakdown for the Eaton Fuller FO-8406A-AW3 — every part in the manual, matched to our live inventory. We stock 11 of the 17 parts below; click any part number to view it, or add it straight to your cart. Click a number on any diagram to jump to that part.
No parts match that search — try the part number with no dashes.
Service Parts List
Click a number on the diagram to highlight that part below.
| Item | Part No. | Description | Qty | Notes | Price | |
|---|---|---|---|---|---|---|
| 1 | K-3784RX | Reman Exch Gen 3 X-y Shifter Kit | 1 | Replaces A-7670, A-7856, K-3784. | — | No longer available — call for replacement |
| 2 | 4305452 | Gasket | 1 | Replaces 4301958. | $11.02 | Add to Cart |
| 3 | 4306043 | Pushbutton Assy | 1 | Replaces S-3007. | $1,088.67 | Add to Cart |
| 4 | K-3231 | Speed Sensor Kit | 1 | Replaces A-6398, A-6724. SINGLE PICK-UP (2 PIN) | — | Call for availability |
| 5 | K-3648 | Inertia Brake Kit | 1 | Replaces A-7434, K-3508, A-7828. | $3,340.11 | Add to Cart |
| 6 | K-3498 | Oil Filter Kit | 1 | Replaces 4305476, 4305783. | $427.89 | Add to Cart |
| 7 | K-3610 | Oil Pan Replacement Kit | 1 | Replaces 691888. | $203.99 | Add to Cart |
| 8 | K-3611 | Spacer Replacement Kit | 1 | Replaces 691886. | $231.64 | Add to Cart |
| 9 | K-3709 | Trans Controller Kit | 1 | — | Call for availability | |
| 10 | K-3743 | Trans Harness Kit | 1 | Replaces 4306024. | $278.60 | Add to Cart |
| 11 | K-3638 | I-brake Connector Kit | 1 | Replaces 691499. | — | No longer available — call for replacement |
| 12 | K-3765 | Bulkhead Front Brg Cover Kit | 1 | $185.81 | Add to Cart | |
| 13 | K-3858 | Stub Shaft Replacement Kit | 1 | $582.55 | Add to Cart | |
| 14 | 125678 | Torsion Coupler | 1 | THIS ITEM INCLUDES K-3765 | — | Call for availability |
| 15 | 4305309 | Gasket | 2 | $8.58 | Add to Cart | |
| 16 | K-4009 | Xy Shifter Repair Kit | 1 | $17.59 | Add to Cart | |
| 999 | TN-C35- | FO-8406A-AW3 Reman Service Unit | 1 | Replaces TA-C35-01. | — | Call for availability |
Eaton Fuller parts & units we stock
Pro Gear and Transmission stocks new, remanufactured and good-used parts for Eaton Fuller transmission units:
- All Eaton Fuller transmission parts & units
- Remanufactured transmissions
- Search our catalog for FO-8406A-AW3
Not sure exactly which unit you have? Check our identification guides, or Ask an Expert — send us photos of your data tag and our drivetrain specialists will identify the unit and the exact parts you need. Or call (877) 776-4600.