Equipment unit · VIN-decoded · NHTSA vPIC

2019 West-Mark

1W9TE4023KA488223 · TRAILER
Carriers run under2
26 mo
Inspections4
all-time
OOS inspections0
of 4
First seenFeb 21, 2024
CA
Last seenApr 24, 2026
TN
Inspected under 2 different carriers in 26 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
1W9TE4023KA488223
Make
West-Mark
Model
Not decoded
Model year
2019
Body class
Not decoded
Vehicle type
TRAILER
GVWR
Not decoded
Decoded at
Aug 9, 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
1W9

Deterministic · VIN positions 1–3.

Vehicle descriptor section
TE402

Deterministic · VIN positions 4–8.

Check digit
3 · valid

Deterministic · position 9; calculated value 3.

Model year candidates
1989 or 2019

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

North American serial sequence
488223

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
WEST-MARK

Prefix basis · 39 decoded VINs at 100.0% prefix purity.

Model
Certified Stainless Services, Inc dba West-Mark

Prefix basis · 39 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
2019

Observed directly for this VIN via NHTSA vPIC.

Observed make
WEST-MARK

Observed directly for this VIN via NHTSA vPIC.

Observed model
Not established

Observed directly for this VIN via NHTSA vPIC.

Observed body class
Not established

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 · Feb 21, 2024 – Apr 24, 2026

DateStateLevelViol.OOSCarrier (DOT)Plate
Apr 24, 2026TNIII · Driver-only0SANDAIR CORPORATION 4937504SJ4496/CA
Jul 23, 2025WAIII · Driver-only3ORGANIC WEST MILK TRANSPORT INC 28301294SJ4496/CA
Jan 14, 2025CAIII · Driver-only0ORGANIC WEST MILK TRANSPORT INC 28301294SJ4496/CA
Feb 21, 2024CAII · Walk-around0SANDAIR CORPORATION 4937504SJ4496/CA
03

Carriers this unit has run under

2 distinct carriers · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
SANDAIR CORPORATION493750Feb 21, 2024Apr 24, 20262CA
ORGANIC WEST MILK TRANSPORT INC2830129Jan 14, 2025Jul 23, 20252CA
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.
4SJ4496CASANDAIR CORPORATIONFeb 21, 2024Apr 24, 20262
4SJ4496CAORGANIC WEST MILK TRANSPORT INCJan 14, 2025Jul 23, 20252
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Aug 9, 2026