Equipment unit · VIN-decoded · NHTSA vPIC

2015 Kenworth T4 Series

1NKBLJ0X0FJ431605 · Truck · INCOMPLETE VEHICLE
Carriers run under3
17 mo
Inspections4
all-time
OOS inspections0
of 4
First seenSep 14, 2023
TX
Last seenFeb 28, 2025
TX
Inspected under 3 different carriers in 17 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
1NKBLJ0X0FJ431605
Make
Kenworth
Model
T4 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
BLJ0X

Deterministic · VIN positions 4–8.

Check digit
0 · valid

Deterministic · position 9; calculated value 0.

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
431605

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 · 68 decoded VINs at 100.0% prefix purity.

Model
T4 Series

Prefix basis · 68 decoded VINs at 100.0% prefix purity.

Model line
Not established

No sourced model-line label is established.

No source established for this field.

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
T4 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

  • model line
  • generation
  • cab type

These are withheld claims, not negative findings.

02

Inspection history

Every roadside inspection of this VIN, newest first · Sep 14, 2023 – Feb 28, 2025

DateStateLevelViol.OOSCarrier (DOT)Plate
Feb 28, 2025TXIII · Driver-only1VMK CONCRETE LLC 3998044DGJ2939/TX
Nov 16, 2023TXII · Walk-around0CEMEX CONSTRUCTION MATERIALS HOUSTON LLC 2812384DGJ2939/TX
Sep 26, 2023TXII · Walk-around3CEMEX CONSTRUCTION MATERIALS SOUTH LLC 942243DGJ2939/TX
Sep 14, 2023TXI · Full2CEMEX CONSTRUCTION MATERIALS HOUSTON LLC 2812384DGJ2939/TX
03

Carriers this unit has run under

3 distinct carriers · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
VMK CONCRETE LLC3998044Feb 28, 2025Feb 28, 20251TX
CEMEX CONSTRUCTION MATERIALS HOUSTON LLC2812384Sep 14, 2023Nov 16, 20232TX
CEMEX CONSTRUCTION MATERIALS SOUTH LLC942243Sep 26, 2023Sep 26, 20231AZ
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.
DGJ2939TXVMK CONCRETE LLCFeb 28, 2025Feb 28, 20251
DGJ2939TXCEMEX CONSTRUCTION MATERIALS HOUSTON LLCSep 14, 2023Nov 16, 20232
DGJ2939TXCEMEX CONSTRUCTION MATERIALS SOUTH LLCSep 26, 2023Sep 26, 20231
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Jul 6, 2026