Factory build sheet
2021 Ford F-350 XL LB DRW 4WD
Build 1FTRF3DN-M · 7.3L 8cyl · Four-wheel drive · Pickup
VIN positions 1 through 8 read 1FTRF3DN 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 1FTRF3DN and carries M in position 10 left the plant with the same engine, transmission, drivetrain and equipment listed below. We know of 33 of them.
- Decoded Jul 7, 2026
- 33 known VINs
- 1 listed for sale now
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
- Regular
- 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 1FTRF3DN 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 | RF3DN | 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 |
33 vehicles carry this build
Every VIN we have decoded to 1FTRF3DN-M shares the specification above.
- 33 Known VINs
- 1 Listed for sale now
- 1FTRF3DN 1MED27058
- 1FTRF3DN 3MED69098
- 1FTRF3DN 7MEC02890
- 1FTRF3DN 1MEC84521
- 1FTRF3DN 5MED27967
- 1FTRF3DN 3MEC60947
- 1FTRF3DN XMEE13758
- 1FTRF3DN 8MED00911
- 1FTRF3DN 0MED69284
- 1FTRF3DN 3MED23416
- 1FTRF3DN XMED26393
- 1FTRF3DN 1MEC52927
- 1FTRF3DN 1MED28646
- 1FTRF3DN 7MEC86676
- 1FTRF3DN 6MEC79539
- 1FTRF3DN 2MED69285
- 1FTRF3DN 1MED00149
- 1FTRF3DN 1MEC88794
- 1FTRF3DN 8MED69789
- 1FTRF3DN 0MED34437
- 1FTRF3DN 3MED69392
- 1FTRF3DN 3MEC52864
- 1FTRF3DN 2MED00158
- 1FTRF3DN 0MED68085
- 1FTRF3DN 9MEC78529
- 1FTRF3DN 1MEE13759
- 1FTRF3DN XMEE13713
- 1FTRF3DN 2MEC34517
- 1FTRF3DN 1MED14715
- 1FTRF3DN 8MEE13760
- 1FTRF3DN 9MEC58443
- 1FTRF3DN 4MED29239
- 1FTRF3DN 4MED69286
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 33 VINs of this build we have seen in dealer inventory. They are a sample of the road population, not a production figure.