Equipment unit · VIN-decoded · NHTSA vPIC

1999 Kenworth W900

1NKWXUEX5XR831436 · Truck · INCOMPLETE VEHICLE
Carriers run under2
34 mo
Inspections4
all-time
OOS inspections2
of 4
First seenAug 15, 2023
TX
Last seenJun 26, 2026
TX
Inspected under 2 different carriers in 34 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
1NKWXUEX5XR831436
Make
Kenworth
Model
W900
Model year
1999
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
WXUEX

Deterministic · VIN positions 4–8.

Check digit
5 · valid

Deterministic · position 9; calculated value 5.

Model year candidates
1999 or 2029

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

North American serial sequence
831436

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.

Not established

No supported platform claim is established for this prefix

The resolver answered successfully but returned no row above the evidence floor. This does not mean the vehicle has no platform or that no data exists; it means this store cannot make the claim.

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
1999

Observed directly for this VIN via NHTSA vPIC.

Observed make
KENWORTH

Observed directly for this VIN via NHTSA vPIC.

Observed model
W900

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

  • platform make
  • platform model
  • model line
  • generation
  • cab type

These are withheld claims, not negative findings.

02

Inspection history

Every roadside inspection of this VIN, newest first · Aug 15, 2023 – Jun 26, 2026

DateStateLevelViol.OOSCarrier (DOT)Plate
Jun 26, 2026TXII · Walk-around10OOSMONTESINO SERVICES LLC 4315253YDT2613/TX
Jul 1, 2025TXII · Walk-around2MONTESINO SERVICES LLC 4315253WHF3941/TX
Feb 7, 2025TXII · Walk-around4MONTESINO SERVICES LLC 4315253NVK2788/TX
Aug 15, 2023TXII · Walk-around7OOSPOTROS CONCRETE LLC 3508772NVK2788/TX
03

Carriers this unit has run under

2 distinct carriers · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
MONTESINO SERVICES LLC4315253Feb 7, 2025Jun 26, 20263TX
POTROS CONCRETE LLC3508772Aug 15, 2023Aug 15, 20231TX
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.
YDT2613TX1MONTESINO SERVICES LLCJun 26, 2026Jun 26, 20261
WHF3941TXMONTESINO SERVICES LLCJul 1, 2025Jul 1, 20251
NVK2788TXMONTESINO SERVICES LLCFeb 7, 2025Feb 7, 20251
NVK2788TXPOTROS CONCRETE LLCAug 15, 2023Aug 15, 20231
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Jul 6, 2026