Equipment unit · VIN-decoded · NHTSA vPIC

2014 Kenworth T6 Series

1NKAD39X7EJ403872 · Truck-Tractor · INCOMPLETE VEHICLE
T600
Carriers run under2
31 mo
Inspections17
all-time
OOS inspections2
of 17
First seenJan 18, 2024
CA
Last seenAug 12, 2026
US
Inspected under 2 different carriers in 31 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
1NKAD39X7EJ403872
Make
Kenworth
Model
T6 Series
Model year
2014
Body class
Truck-Tractor
Vehicle type
INCOMPLETE VEHICLE
GVWR
Class 8: 33,001 lb and above (14,969 kg and above)
Decoded at
Jun 16, 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
AD39X

Deterministic · VIN positions 4–8.

Check digit
7 · valid

Deterministic · position 9; calculated value 7.

Model year candidates
1984 or 2014

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

North American serial sequence
403872

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 · 10 decoded VINs at 100.0% prefix purity.

Model
T6 Series

Prefix basis · 10 decoded VINs at 100.0% prefix purity.

Model line
T600

Sourced label · prefix basis 10 decoded VINs at 100.0% 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
2014

Observed directly for this VIN via NHTSA vPIC.

Observed make
KENWORTH

Observed directly for this VIN via NHTSA vPIC.

Observed model
T6 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
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 · Jan 18, 2024 – Aug 12, 2026

DateStateLevelViol.OOSCarrier (DOT)Plate
Aug 12, 2026USI · Full0GT CARRIERS INC 24966029G21538/CA
Jul 16, 2026CAIII · Driver-only2GT CARRIERS INC 24966029G21538/CA
Jun 25, 2026CAII · Walk-around0GT CARRIERS INC 24966029G21538/CA
Jun 19, 2026USI · Full0GT CARRIERS INC 24966029G21538/CA
Jun 3, 2026CAI · Full3GT CARRIERS INC 24966029G21538/CA
Apr 30, 2026CAIII · Driver-only1OOSGT CARRIERS INC 24966029G21538/CA
Feb 26, 2026USI · Full0GT CARRIERS INC 24966029G21538/CA
Oct 13, 2025CAI · Full2GT CARRIERS INC 24966029G21538/CA
Oct 10, 2025CAII · Walk-around1GT CARRIERS INC 24966029G21538/CA
Sep 22, 2025CAII · Walk-around3GT CARRIERS INC 24966029G21538/CA
Sep 19, 2025USI · Full0GT CARRIERS INC 24966029G21538/CA
Sep 10, 2025USI · Full1OOSGT CARRIERS INC 24966029G21538/CA
Dec 11, 2024CAI · Full0GT CARRIERS INC 24966029G21538/CA
May 23, 2024CAIII · Driver-only0GT CARRIERS INC 24966029G21538/CA
Apr 16, 2024CAI · Full0GT CARRIERS INC 24966029G21538/CA
Jan 18, 2024CAI · Full1GT CARRIERS INC 24966029G21538/CA
Jan 18, 2024CAI · Full0WESTRA CONSTRUCTION CORP 8649779G21538/CA
03

Carriers this unit has run under

2 distinct carriers · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
GT CARRIERS INC2496602Jan 18, 2024Aug 12, 202616CA
WESTRA CONSTRUCTION CORP864977Jan 18, 2024Jan 18, 20241FL
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.
9G21538CA1GT CARRIERS INCJan 18, 2024Aug 12, 202616
9G21538CAWESTRA CONSTRUCTION CORPJan 18, 2024Jan 18, 20241
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Jun 16, 2026