Equipment unit · VIN-decoded · NHTSA vPIC

2004 Kenworth W900

1XKWDB9X04J055966 · Truck-Tractor · TRUCK
Carriers run under1
14 mo
Inspections4
all-time
OOS inspections2
of 4
First seenJan 25, 2024
AZ
Last seenMar 28, 2025
AZ
01

Decoded identity

From the 17-character VIN via NHTSA vPIC

VIN
1XKWDB9X04J055966
Make
Kenworth
Model
W900
Model year
2004
Body class
Truck-Tractor
Vehicle type
TRUCK
GVWR
Class 8: 33,001 lb and above (14,969 kg and above)
Decoded at
Jul 10, 2026
vPIC returns make / model / year / body class / GVWR. Fields it does not resolve are shown as Not decoded rather than guessed.
Decode evidence & sources

Deterministic structure

These fields come directly from VIN positions and the published checksum calculation, with zero store IO.

World manufacturer identifier
1XK

Deterministic · VIN positions 1–3.

Vehicle descriptor section
WDB9X

Deterministic · VIN positions 4–8.

Check digit
0 · valid

Deterministic · position 9; calculated value 0.

Model year candidates
2004 or 2034

Position 10 repeats every 30 years; both candidates are retained and neither is silently selected.

North American serial sequence
055966

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.

Not established

No supported platform claim is established for this prefix

The resolver answered successfully but returned no row above the evidence floor. This does not mean the vehicle has no platform or that no data exists; it means this store cannot make the claim.

Federal observation (NHTSA vPIC)

What the federal corpus observed directly for this exact VIN — independent of, and sometimes more specific than, the prefix-level inference above.

Observed model year
2004

Observed directly for this VIN via NHTSA vPIC.

Observed make
KENWORTH

Observed directly for this VIN via NHTSA vPIC.

Observed model
W900

Observed directly for this VIN via NHTSA vPIC.

Observed body class
Truck-Tractor

Observed directly for this VIN via NHTSA vPIC.

Observed vehicle type
TRUCK

Observed directly for this VIN via NHTSA vPIC.

GVWR
Class 8: 33,001 lb and above (14,969 kg and above)

Observed directly for this VIN via NHTSA vPIC.

Not established

  • platform make
  • platform model
  • model line
  • generation
  • cab type

These are withheld claims, not negative findings.

02

Inspection history

Every roadside inspection of this VIN, newest first · Jan 25, 2024 – Mar 28, 2025

DateStateLevelViol.OOSCarrier (DOT)Plate
Mar 28, 2025AZII · Walk-around11JNA TRUCKING LLC 3838660D87496C/WA
Mar 14, 2025IDI · Full29OOSJNA TRUCKING LLC 3838660D87496C/WA
Jan 31, 2024IDII · Walk-around20OOSJNA TRUCKING LLC 3838660D87496C/WA
Jan 25, 2024AZII · Walk-around8JNA TRUCKING LLC 3838660D87496C/WA
03

Carriers this unit has run under

1 distinct carrier · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
JNA TRUCKING LLC3838660Jan 25, 2024Mar 28, 20254WA
Names are left-joined from the FMCSA census; a DOT with no census match falls back to its number.
04

Plate & unit-number history

The same truck under different plate registrations across carriers

PlateState / prov.Unit no.CarrierDate rangeInsp.
D87496CWAJNA TRUCKING LLCJan 25, 2024Mar 28, 20254
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Jul 10, 2026