Equipment unit · VIN-decoded · NHTSA vPIC

2023 Western Star 49X Chassis

5KJJBWDR7PPUG5255 · Truck-Tractor · TRUCK
Carriers run under2
29 mo
Inspections6
all-time
OOS inspections1
of 6
First seenDec 15, 2023
LA
Last seenMay 11, 2026
LA
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
5KJJBWDR7PPUG5255
Make
Western Star
Model
49X Chassis
Model year
2023
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
5KJ

Deterministic · VIN positions 1–3.

Vehicle descriptor section
JBWDR

Deterministic · VIN positions 4–8.

Check digit
7 · valid

Deterministic · position 9; calculated value 7.

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
UG5255

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
WESTERN STAR

Prefix basis · 617 decoded VINs at 100.0% prefix purity.

Model
49X Chassis

Prefix basis · 617 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
2023

Observed directly for this VIN via NHTSA vPIC.

Observed make
WESTERN STAR

Observed directly for this VIN via NHTSA vPIC.

Observed model
49X Chassis

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

  • model line
  • generation
  • cab type

These are withheld claims, not negative findings.

02

Inspection history

Every roadside inspection of this VIN, newest first · Dec 15, 2023 – May 11, 2026

DateStateLevelViol.OOSCarrier (DOT)Plate
May 11, 2026LAIII · Driver-only0ASTON TRANSPORT LLC 2547601Z847237/LA
Apr 27, 2026LAI · Full0ASTON TRANSPORT LLC 2547601Z847237/LA
Nov 17, 2025LAIII · Driver-only0ASTON TRANSPORT LLC 2547601Z847237/LA
May 15, 2025LAII · Walk-around1OOSASTON TRANSPORT LLC 2547601Z847237/LA
Aug 19, 2024LAII · Walk-around0TCHEFUNCTE ENERGY LLC 3816455Z470496/LA
Dec 15, 2023LAII · Walk-around0TCHEFUNCTE ENERGY LLC 3816455Z470496/LA
03

Carriers this unit has run under

2 distinct carriers · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
ASTON TRANSPORT LLC2547601May 15, 2025May 11, 20264LA
TCHEFUNCTE ENERGY LLC3816455Dec 15, 2023Aug 19, 20242LA
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.
Z847237LAASTON TRANSPORT LLCMay 15, 2025May 11, 20264
Z470496LATCHEFUNCTE ENERGY LLCDec 15, 2023Aug 19, 20242
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Jun 28, 2026