Equipment unit · VIN-decoded · NHTSA vPIC

2001 X-L Specialized Trailers Inc

4U3J053211L003042 · Trailer · TRAILER
Carriers run under2
30 mo
Inspections6
all-time
OOS inspections2
of 6
First seenOct 12, 2023
WA
Last seenApr 21, 2026
PA
Inspected under 2 different carriers in 30 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
4U3J053211L003042
Make
X-L Specialized Trailers Inc
Model
X-L SPECIALIZED TRAILERS INC
Model year
2001
Body class
Trailer
Vehicle type
TRAILER
GVWR
Not decoded
Decoded at
Jun 24, 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
4U3

Deterministic · VIN positions 1–3.

Vehicle descriptor section
J0532

Deterministic · VIN positions 4–8.

Check digit
1 · valid

Deterministic · position 9; calculated value 1.

Model year candidates
2001 or 2031

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

North American serial sequence
003042

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 · 168 decoded VINs at 100.0% prefix purity.

Model
X-L SPECIALIZED TRAILERS INC

Prefix basis · 168 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
2001

Observed directly for this VIN via NHTSA vPIC.

Observed make
X-L SPECIALIZED TRAILERS INC

Observed directly for this VIN via NHTSA vPIC.

Observed model
X-L SPECIALIZED TRAILERS INC

Observed directly for this VIN via NHTSA vPIC.

Observed body class
Trailer

Observed directly for this VIN via NHTSA vPIC.

Observed vehicle type
TRAILER

Observed directly for this VIN via NHTSA vPIC.

GVWR
Not established

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 · Oct 12, 2023 – Apr 21, 2026

DateStateLevelViol.OOSCarrier (DOT)Plate
Apr 21, 2026PAII · Walk-around6SLAUBAUGH TRACTOR LLC 2811712623647/KS
Feb 20, 2026SDIII · Driver-only1SLAUBAUGH TRACTOR LLC 2811712623647/KS
Jan 7, 2025ARIII · Driver-only1WINDROSE LOGISTICS LLC 3543492623647/KS
Mar 15, 2024IAII · Walk-around3WINDROSE LOGISTICS LLC 3543492623647/KS
Feb 7, 2024IAII · Walk-around1OOSWINDROSE LOGISTICS LLC 3543492623647/KS
Oct 12, 2023WAII · Walk-around2OOSWINDROSE LOGISTICS LLC 3543492623647/KS
03

Carriers this unit has run under

2 distinct carriers · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
SLAUBAUGH TRACTOR LLC2811712Feb 20, 2026Apr 21, 20262KS
WINDROSE LOGISTICS LLC3543492Oct 12, 2023Jan 7, 20254SD
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.
623647KSSLAUBAUGH TRACTOR LLCFeb 20, 2026Apr 21, 20262
623647KSWINDROSE LOGISTICS LLCOct 12, 2023Jan 7, 20254
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Jun 24, 2026