Equipment unit · VIN-decoded · NHTSA vPIC

2008 Kenworth W9 Series

1NKWX4EX58R225829 · Truck · INCOMPLETE VEHICLE
W900
Carriers run under3
23 mo
Inspections5
all-time
OOS inspections1
of 5
First seenFeb 5, 2024
WA
Last seenJan 19, 2026
WA
Inspected under 3 different carriers in 23 months
A unit that bounces between many operators can indicate slip-seating, heavy sub-haul, or double-brokering. Review the carrier timeline below for load integrity — context for human judgment, not a verdict.
01

Decoded identity

From the 17-character VIN via NHTSA vPIC

VIN
1NKWX4EX58R225829
Make
Kenworth
Model
W9 Series
Model year
2008
Body class
Truck
Vehicle type
INCOMPLETE VEHICLE
GVWR
Class 8: 33,001 lb and above (14,969 kg and above)
Decoded at
Jun 28, 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
1NK

Deterministic · VIN positions 1–3.

Vehicle descriptor section
WX4EX

Deterministic · VIN positions 4–8.

Check digit
5 · valid

Deterministic · position 9; calculated value 5.

Model year candidates
2008 or 2038

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

North American serial sequence
225829

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.

Make
KENWORTH

Prefix basis · 194 decoded VINs at 95.9% prefix purity.

Model
W9 Series

Prefix basis · 194 decoded VINs at 95.9% prefix purity.

Model line
W900

Sourced label · prefix basis 194 decoded VINs at 95.9% prefix purity.

Generation
Not established

No sourced generation label is established.

No source established for this field.

Cab type
Not established

No sourced cab label is established.

No source established for this field.

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
2008

Observed directly for this VIN via NHTSA vPIC.

Observed make
KENWORTH

Observed directly for this VIN via NHTSA vPIC.

Observed model
W9 Series

Observed directly for this VIN via NHTSA vPIC.

Observed body class
Truck

Observed directly for this VIN via NHTSA vPIC.

Observed vehicle type
INCOMPLETE VEHICLE

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

  • generation
  • cab type

These are withheld claims, not negative findings.

02

Inspection history

Every roadside inspection of this VIN, newest first · Feb 5, 2024 – Jan 19, 2026

DateStateLevelViol.OOSCarrier (DOT)Plate
Jan 19, 2026WAIII · Driver-only0COLB TRUCKING LLC 4065279RP22872/WA
Dec 4, 2025ORI · Full3OOSCOLB TRUCKING LLC 4065279RP22872/WA
Jan 9, 2025WAII · Walk-around1WINDY RIDGE TREE SERVICE & EXCAVATING LLC 4265212D61034D/WA
May 17, 2024WAII · Walk-around1BUCK'S LOGGING INC 468753C53366X/WA
Feb 5, 2024WAII · Walk-around1BUCK'S LOGGING INC 468753C53366X/WA
03

Carriers this unit has run under

3 distinct carriers · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
COLB TRUCKING LLC4065279Dec 4, 2025Jan 19, 20262WA
WINDY RIDGE TREE SERVICE & EXCAVATING LLC4265212Jan 9, 2025Jan 9, 20251WA
BUCK'S LOGGING INC468753Feb 5, 2024May 17, 20242WA
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.
RP22872WACOLB TRUCKING LLCDec 4, 2025Jan 19, 20262
D61034DWAWINDY RIDGE TREE SERVICE & EXCAVATING LLCJan 9, 2025Jan 9, 20251
C53366XWABUCK'S LOGGING INCFeb 5, 2024May 17, 20242
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Jun 28, 2026