Equipment unit · VIN-decoded · NHTSA vPIC

2023 Kenworth W9 Series

1NKWX4EX2PR256213 · Truck · INCOMPLETE VEHICLE
W900
Carriers run under2
29 mo
Inspections8
all-time
OOS inspections0
of 8
First seenJun 29, 2023
NJ
Last seenNov 25, 2025
DE
Inspected under 2 different carriers in 29 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
1NKWX4EX2PR256213
Make
Kenworth
Model
W9 Series
Model year
2023
Body class
Truck
Vehicle type
INCOMPLETE VEHICLE
GVWR
Class 8: 33,001 lb and above (14,969 kg and above)
Decoded at
Jun 21, 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
2 · valid

Deterministic · position 9; calculated value 2.

Model year candidates
1993 or 2023

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

North American serial sequence
256213

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
2023

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 · Jun 29, 2023 – Nov 25, 2025

DateStateLevelViol.OOSCarrier (DOT)Plate
Nov 25, 2025DEII · Walk-around0MARK COULBOURNE INC 542596CL124848/DE
Nov 19, 2024PAIII · Driver-only1CHEW BROTHERS TRUCKING LLC 1723934AY685A/NJ
Oct 30, 2024NJIII · Driver-only0CHEW BROTHERS TRUCKING LLC 1723934AY685A/NJ
Feb 26, 2024NJIII · Driver-only2CHEW BROTHERS TRUCKING LLC 1723934AY685A/NJ
Nov 13, 2023PAIII · Driver-only1CHEW BROTHERS TRUCKING LLC 1723934AY685A/NJ
Oct 5, 2023NJIII · Driver-only0CHEW BROTHERS TRUCKING LLC 1723934AY685A/NJ
Sep 28, 2023NJII · Walk-around2CHEW BROTHERS TRUCKING LLC 1723934AY685A/NJ
Jun 29, 2023NJIII · Driver-only0CHEW BROTHERS TRUCKING LLC 1723934AY685A/NJ
03

Carriers this unit has run under

2 distinct carriers · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
MARK COULBOURNE INC542596Nov 25, 2025Nov 25, 20251DE
CHEW BROTHERS TRUCKING LLC1723934Jun 29, 2023Nov 19, 20247NJ
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.
CL124848DEMARK COULBOURNE INCNov 25, 2025Nov 25, 20251
AY685ANJCHEW BROTHERS TRUCKING LLCJun 29, 2023Nov 19, 20247
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Jun 21, 2026