Equipment unit · VIN-decoded · NHTSA vPIC

2018 Kenworth W9 Series

1XKWD49X4JJ219131 · Truck-Tractor · TRUCK
W900
Carriers run under2
35 mo
Inspections7
all-time
OOS inspections0
of 7
First seenAug 31, 2023
AR
Last seenJul 2, 2026
AZ
Inspected under 2 different carriers in 35 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
1XKWD49X4JJ219131
Make
Kenworth
Model
W9 Series
Model year
2018
Body class
Truck-Tractor
Vehicle type
TRUCK
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
1XK

Deterministic · VIN positions 1–3.

Vehicle descriptor section
WD49X

Deterministic · VIN positions 4–8.

Check digit
4 · valid

Deterministic · position 9; calculated value 4.

Model year candidates
1988 or 2018

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

North American serial sequence
219131

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 · 5,845 decoded VINs at 94.7% prefix purity.

Model
W9 Series

Prefix basis · 5,845 decoded VINs at 94.7% prefix purity.

Model line
W900

Sourced label · prefix basis 5,845 decoded VINs at 94.7% 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
2018

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-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

  • generation
  • cab type

These are withheld claims, not negative findings.

02

Inspection history

Every roadside inspection of this VIN, newest first · Aug 31, 2023 – Jul 2, 2026

DateStateLevelViol.OOSCarrier (DOT)Plate
Jul 2, 2026AZII · Walk-around0GLOBAL SPECIALIZED SERVICES LLC 2347147A27525/WY
Jun 30, 2026AZIII · Driver-only0GLOBAL SPECIALIZED SERVICES LLC 2347147A27525/WY
Jun 15, 2026AZIII · Driver-only0GLOBAL SPECIALIZED SERVICES LLC 2347147A27525/WY
Jan 30, 2025COII · Walk-around0GLOBAL SPECIALIZED SERVICES LLC 2347147A19914/WY
Apr 30, 2024ARIII · Driver-only1DIAMOND TRANSPORTATION SYSTEM INC 4671318457Z/WI
Jan 15, 2024SDIII · Driver-only0DIAMOND TRANSPORTATION SYSTEM INC 4671318457Z/WI
Aug 31, 2023ARIII · Driver-only3DIAMOND TRANSPORTATION SYSTEM INC 4671318457Z/WI
03

Carriers this unit has run under

2 distinct carriers · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
GLOBAL SPECIALIZED SERVICES LLC2347147Jan 30, 2025Jul 2, 20264WY
DIAMOND TRANSPORTATION SYSTEM INC46713Aug 31, 2023Apr 30, 20243WI
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.
A27525WY1GLOBAL SPECIALIZED SERVICES LLCJun 15, 2026Jul 2, 20263
A19914WYGLOBAL SPECIALIZED SERVICES LLCJan 30, 2025Jan 30, 20251
18457ZWIDIAMOND TRANSPORTATION SYSTEM INCAug 31, 2023Apr 30, 20243
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Jun 28, 2026