Factory build sheet
2021 Ford F-350
Build 1FT8X3DN-M · 7.3L 8cyl · Four-wheel drive · Pickup
VIN positions 1 through 8 read 1FT8X3DN and position 10 reads M. Those nine characters define this build. Position 9 and positions 11 through 17 differ on every car.
Every F-350 whose VIN starts 1FT8X3DN and carries M in position 10 left the plant with the same engine, transmission, drivetrain and equipment listed below. We know of 29 of them.
- Decoded Jul 7, 2026
- 29 known VINs
This configuration is identical to 2021 Ford F-350 7.3L 8cyl Pickup (218 vehicles). That page carries the full record.
Factory specification
As filed by Ford with NHTSA for this build. Fields the filing does not record are left out entirely — a missing row means no recorded value, not a missing feature.
Engine
- Displacement
- 7.3 L
- Cylinders
- 8
- Configuration
- V-Shaped
- Engine manufacturer
- Ford
- Horsepower
- 430 hp
- Fuel type
- Gasoline
Drivetrain
- Drive type
- Four-wheel drive
- Brake system
- Hydraulic
Body & chassis
- Body class
- Pickup
- NHTSA body type
- TRUCK
- Cab type
- Extra/Super/Quad/Double/King/Extended
- Series
- F-Series Super Duty - Dual Rear Wheel
- Manufacturer
- FORD MOTOR COMPANY
Weight rating
- GVWR class
- Class 3
- GVWR
- 10,001–14,000 lb
Gross vehicle weight rating is the loaded ceiling set by the manufacturer, not the car's own weight.
The same build, other model years
Ford used the VIN pattern 1FT8X3DN for 5 model years. Nothing but the year changes between these pages, so the price gap between them is depreciation on an identical car.
How this VIN pattern is read
A 17-character VIN carries two kinds of information: what was built, and which one it is. This page is the first kind — the nine highlighted positions.
| Positions | Characters | What they encode |
|---|---|---|
| 1–3 | 1FT | FORD MOTOR COMPANY · World manufacturer identifier |
| 4–8 | 8X3DN | Model, body style, engine and restraint system |
| 9 | × | Check digit — computed per vehicle, not part of the build |
| 10 | M | Model year — 2021 |
| 11 | × | Assembly plant |
| 12–17 | ×××××× | Production sequence number, unique to each vehicle |
29 vehicles carry this build
Every VIN we have decoded to 1FT8X3DN-M shares the specification above.
- 29 Known VINs
- 1FT8X3DN XMEC66642
- 1FT8X3DN XMED25494
- 1FT8X3DN 0MED28730
- 1FT8X3DN 3MED28558
- 1FT8X3DN 8MED49907
- 1FT8X3DN 1MED63261
- 1FT8X3DN 7MED73860
- 1FT8X3DN 6MED00558
- 1FT8X3DN 4MED26592
- 1FT8X3DN 6MED70142
- 1FT8X3DN 3MEC86683
- 1FT8X3DN 8MEE11225
- 1FT8X3DN 4MED19254
- 1FT8X3DN 2MEC66134
- 1FT8X3DN XMEE11243
- 1FT8X3DN 8MED00268
- 1FT8X3DN 9MEC45975
- 1FT8X3DN 6MEC55699
- 1FT8X3DN 1MEC80980
- 1FT8X3DN 1MED26212
- 1FT8X3DN 9MEC98725
- 1FT8X3DN 1MED79606
- 1FT8X3DN 8MEC61049
- 1FT8X3DN 3MED78683
- 1FT8X3DN XMED00725
- 1FT8X3DN 7MEC28446
- 1FT8X3DN 3MED65335
- 1FT8X3DN 8MED26353
- 1FT8X3DN 2MED26736
Neighboring configurations
Other factory configurations of the F-350, each with its own build sheet. The set is fixed by the VIN patterns themselves, so it does not shuffle as prices or inventory move.
Keep going
Where this data comes from
Specification fields are decoded from the manufacturer's filings in the NHTSA vPIC database, keyed on VIN positions 1–8 and 10. We publish the filed values as they stand and leave out anything the filing does not record.
Vehicle counts come from the 29 VINs of this build we have seen in dealer inventory. They are a sample of the road population, not a production figure.