Equipment unit · VIN-decoded · NHTSA vPIC

2004 Kenworth T600

1XKADU9X04J057240 · Truck-Tractor · TRUCK
Carriers run under3
18 mo
Inspections5
all-time
OOS inspections5
of 5
First seenSep 13, 2024
TX
Last seenMar 25, 2026
TX
Inspected under 3 different carriers in 18 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
1XKADU9X04J057240
Make
Kenworth
Model
T600
Model year
2004
Body class
Truck-Tractor
Vehicle type
TRUCK
GVWR
Class 8: 33,001 lb and above (14,969 kg and above)
Decoded at
Jun 28, 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
1XK

Deterministic · VIN positions 1–3.

Vehicle descriptor section
ADU9X

Deterministic · VIN positions 4–8.

Check digit
0 · valid

Deterministic · position 9; calculated value 0.

Model year candidates
2004 or 2034

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

North American serial sequence
057240

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
2004

Observed directly for this VIN via NHTSA vPIC.

Observed make
KENWORTH

Observed directly for this VIN via NHTSA vPIC.

Observed model
T600

Observed directly for this VIN via NHTSA vPIC.

Observed body class
Truck-Tractor

Observed directly for this VIN via NHTSA vPIC.

Observed vehicle type
TRUCK

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 · Sep 13, 2024 – Mar 25, 2026

DateStateLevelViol.OOSCarrier (DOT)Plate
Mar 25, 2026TXI · Full13OOSMERCADO TRUCKING & SERVICES LLC 44728551N51055/TX
Aug 18, 2025TXI · Full11OOSL & J TRANSPORT LLC 43016891N51055/TX
May 16, 2025TXII · Walk-around10OOSL & J TRANSPORT LLC 43016891N51055/TX
Apr 4, 2025TXIII · Driver-only1OOSL & J TRANSPORT LLC 43016891N51055/TX
Sep 13, 2024TXII · Walk-around7OOSLUIS FELIPE ALFONSO 38673841N51055/TX
03

Carriers this unit has run under

3 distinct carriers · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
MERCADO TRUCKING & SERVICES LLC4472855Mar 25, 2026Mar 25, 20261TX
L & J TRANSPORT LLC4301689Apr 4, 2025Aug 18, 20253TX
LUIS FELIPE ALFONSO3867384Sep 13, 2024Sep 13, 20241TX
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.
1N51055TXMERCADO TRUCKING & SERVICES LLCMar 25, 2026Mar 25, 20261
1N51055TXL & J TRANSPORT LLCApr 4, 2025Aug 18, 20253
1N51055TXLUIS FELIPE ALFONSOSep 13, 2024Sep 13, 20241
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Jun 28, 2026