2021 Kenworth W9 Series
Decoded identity
From the 17-character VIN via NHTSA vPIC
- VIN
- 1XKWD40X3MR439637
- Make
- Kenworth
- Model
- W9 Series
- Model year
- 2021
- Body class
- Truck-Tractor
- Vehicle type
- TRUCK
- GVWR
- Class 8: 33,001 lb and above (14,969 kg and above)
- Decoded at
- Jul 26, 2026
Decode evidence & sources
Deterministic structure
These fields come directly from VIN positions and the published checksum calculation, with zero store IO.
Position 10 repeats every 30 years; both candidates are retained and neither is silently selected.
Deterministic · positions 12–17 for a North American WMI.
Sourced platform inference
The prefix store publishes only at support ≥ 3 and purity ≥ 90%. Prefix confidence is shown beside every established platform claim.
Prefix basis · 1,108 decoded VINs at 99.0% prefix purity.
Prefix basis · 1,108 decoded VINs at 99.0% prefix purity.
Sourced label · prefix basis 1,108 decoded VINs at 99.0% prefix purity.
No sourced generation label is established.
No source established for this field.
No sourced cab label is established.
No source established for this field.
Not established
- generation
- cab type
These are withheld claims, not negative findings.
Inspection history
Every roadside inspection of this VIN, newest first · Feb 8, 2024 – May 6, 2026
Carriers this unit has run under
2 distinct carriers · grouped by DOT · newest activity first
Plate & unit-number history
The same truck under different plate registrations across carriers