14 prefixes
Mack VIN decoder
Put a Mack VIN in and get the full NHTSA specification plus any open recalls. Below, every manufacturer prefix a Mack can start with.
Where a Mack VIN starts
The first three characters are the World Manufacturer Identifier. Mack vehicles carry 14 of them, spread across 2 countries of manufacture, because the same model can be built on more than one continent. The prefix tells you which plant lineage built the car before you decode anything else.
| Prefix | Manufacturer of record | Vehicle type | Country |
|---|---|---|---|
| 1F9948 | SMACK TRAILERS, LLC | Trailer | UNITED STATES (USA) |
| 1M1 | MACK TRUCKS INC. | Truck | UNITED STATES (USA) |
| 1M2 | MACK TRUCKS INC. | Incomplete Vehicle | UNITED STATES (USA) |
| 1M3 | MACK TRUCKS INC. | Incomplete Vehicle | UNITED STATES (USA) |
| 1M9023 | MACKLIN WELDING | Trailer | UNITED STATES (USA) |
| 1M9176 | MACKS METAL FAB | Trailer | UNITED STATES (USA) |
| 1M9336 | MACKEY TRAILERS | Trailer | UNITED STATES (USA) |
| 1R9781 | REMACKEL TRAILERS, INC | Trailer | UNITED STATES (USA) |
| 1S9136 | MACK TRUCKS OF UTAH,INC. | Truck | UNITED STATES (USA) |
| 1S9410 | MACK TRUCKS OF UTAH,INC. | Incomplete Vehicle | UNITED STATES (USA) |
| 1T9546 | BOA-MACK, INC. | Trailer | UNITED STATES (USA) |
| 2M1 | MACK CANADA INC. | Truck | CANADA |
| 2M2 | MACK CANADA INC. | Incomplete Vehicle | CANADA |
| 2M3 | MACK CANADA INC. | Incomplete Vehicle | CANADA |
What Mack stamps them on
- Trailer6
- Incomplete Vehicle5
- Truck3
Current Mack models
Models NHTSA lists for the most recent complete model year.
- Anthem
- FDM
- Granite
- LC
- LR
- MACKS METAL FAB
- MD
- Mackey Trailers
- Macklin Welding
- Pinnacle
- Pioneer
- REMACKEL TRAILERS
- Smack Trailers, LLC
- Terrapro
Other makes
Prefix table from NHTSA vPIC, built 2026-08-09. 888 prefixes across the site.