Equipment unit · VIN-decoded · NHTSA vPIC

4U3B053379L009971

Not yet decoded
Carriers run under2
5 mo
Inspections2
all-time
OOS inspections2
of 2
First seenMay 31, 2026
AZ
Last seenOct 27, 2026
TX
Inspected under 2 different carriers in 5 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

This VIN has not been decoded yet — the unit's carrier, inspection and plate history below is reconstructed from the FMCSA inspection feed regardless.

Decode evidence & sources

Deterministic structure

These fields come directly from VIN positions and the published checksum calculation, with zero store IO.

World manufacturer identifier
4U3

Deterministic · VIN positions 1–3.

Vehicle descriptor section
B0533

Deterministic · VIN positions 4–8.

Check digit
7 · valid

Deterministic · position 9; calculated value 7.

Model year candidates
2009 or 2039

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

North American serial sequence
009971

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
X-L SPECIALIZED TRAILERS INC

Prefix basis · 20 decoded VINs at 100.0% prefix purity.

Model
X-L SPECIALIZED TRAILERS INC

Prefix basis · 20 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.

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 · May 31, 2026 – Oct 27, 2026

DateStateLevelViol.OOSCarrier (DOT)Plate
Oct 27, 2026TXII · Walk-around4OOSFRONTIER HEAVY HAUL & SUPPORT INC 973732TEMP/SD
May 31, 2026AZII · Walk-around8OOSYATSA MORGAN 2819081BQ3920/OK
03

Carriers this unit has run under

2 distinct carriers · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
FRONTIER HEAVY HAUL & SUPPORT INC973732Oct 27, 2026Oct 27, 20261ND
YATSA MORGAN2819081May 31, 2026May 31, 20261KS
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.
TEMPSD2FRONTIER HEAVY HAUL & SUPPORT INCOct 27, 2026 → Oct 27, 20261
BQ3920OK—YATSA MORGANMay 31, 2026 → May 31, 20261
Sources: FMCSA SAFER · L&I · NHTSA vPIC