Equipment unit · VIN-decoded · NHTSA vPIC

2015 Kenworth W9 Series

1NKWL40XXFR450621 · Truck · INCOMPLETE VEHICLE
W900
Carriers run under1
15 mo
Inspections4
all-time
OOS inspections0
of 4
First seenAug 12, 2024
PA
Last seenNov 4, 2025
PA
01

Decoded identity

From the 17-character VIN via NHTSA vPIC

VIN
1NKWL40XXFR450621
Make
Kenworth
Model
W9 Series
Model year
2015
Body class
Truck
Vehicle type
INCOMPLETE VEHICLE
GVWR
Class 8: 33,001 lb and above (14,969 kg and above)
Decoded at
Jul 6, 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
WL40X

Deterministic · VIN positions 4–8.

Check digit
X · valid

Deterministic · position 9; calculated value X.

Model year candidates
1985 or 2015

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

North American serial sequence
450621

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 · 193 decoded VINs at 98.5% prefix purity.

Model
W9 Series

Prefix basis · 193 decoded VINs at 98.5% prefix purity.

Model line
W900

Sourced label · prefix basis 193 decoded VINs at 98.5% 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
2015

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 · Aug 12, 2024 – Nov 4, 2025

DateStateLevelViol.OOSCarrier (DOT)Plate
Nov 4, 2025PAI · Full7ROUTE 21 TRANSPORT INC 3122856AG52577/PA
Sep 11, 2025PAII · Walk-around0ROUTE 21 TRANSPORT INC 3122856AG52577/PA
Aug 18, 2025PAIII · Driver-only1ROUTE 21 TRANSPORT INC 3122856AG52577/PA
Aug 12, 2024PAII · Walk-around2ROUTE 21 TRANSPORT INC 3122856AG52577/PA
03

Carriers this unit has run under

1 distinct carrier · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
ROUTE 21 TRANSPORT INC3122856Aug 12, 2024Nov 4, 20254PA
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.
AG52577PAROUTE 21 TRANSPORT INCAug 12, 2024Nov 4, 20254
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Jul 6, 2026