Eaton Fuller FO-8406A-AW3 Parts Manual
Rebuilding this unit? Every part below is priced and ready to order. If the FO-8406A-AW3 is past saving, we also stock reman Eaton Fuller transmissions for sale in every speed, ready to ship.
Service Parts List
Item 7Item 4Item 14Item 15Item 13Item 3Item 9Item 10Item 6Item 8Item 12Item 2Item 16Item 5Item 1Item 11Click 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. | $13.93 | 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 SINGLE PICK-UP (2 PIN) | $48.61 | Superseded by K4148Add to Cart |
| 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| 9 | K-3709 | Trans Controller Kit | 1 | $2,469.36 | Superseded by K3709RXAdd to Cart | |
| 10 | K-3743 | Trans Harness Kit | 1 | Replaces 4306024. | $278.60 | Add to Cart |
| 11 | K-3638 | I-brake Connector Kit | 1 | Replaces 691499. | $42.14 | Add to Cart |
| 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-C35-01R | FO-8406A-AW3 Reman Service Unit | 1 | Replaces TA-C35-01. | — | Call for availability |
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 12 of the 17 parts above; 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.
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
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.