Equipment unit · VIN-decoded · NHTSA vPIC

2011 West-Mark Certified Stainless Services, Inc dba West-Mark

1W9TE4026BA488071 · Trailer · TRAILER
Carriers run under3
35 mo
Inspections5
all-time
OOS inspections2
of 5
First seenSep 25, 2023
CA
Last seenAug 14, 2026
CA
Inspected under 3 different carriers in 35 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
1W9TE4026BA488071
Make
West-Mark
Model
Certified Stainless Services, Inc dba West-Mark
Model year
2011
Body class
Trailer
Vehicle type
TRAILER
GVWR
Not decoded
Decoded at
Aug 16, 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
6 · valid

Deterministic · position 9; calculated value 6.

Model year candidates
1981 or 2011

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

North American serial sequence
488071

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
2011

Observed directly for this VIN via NHTSA vPIC.

Observed make
WEST-MARK

Observed directly for this VIN via NHTSA vPIC.

Observed model
Certified Stainless Services, Inc dba West-Mark

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 · Sep 25, 2023 – Aug 14, 2026

DateStateLevelViol.OOSCarrier (DOT)Plate
Aug 14, 2026CAII · Walk-around1OOSORGANIC WEST MILK TRANSPORT INC 28301294WG1224/CA
Mar 17, 2026AZII · Walk-around3SANDAIR CORPORATION 4937504WG1224/CA
Apr 10, 2025CAI · Full1OOSSANDAIR CORPORATION 4937504WG1224/CA
Apr 27, 2024CAI · Full2SUPERIOR TRUCK LINES INC 2645178STL6766/CA
Sep 25, 2023CAI · Full0SUPERIOR TRUCK LINES INC 2645178STL6766/CA
03

Carriers this unit has run under

3 distinct carriers · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
ORGANIC WEST MILK TRANSPORT INC2830129Aug 14, 2026Aug 14, 20261CA
SANDAIR CORPORATION493750Apr 10, 2025Mar 17, 20262CA
SUPERIOR TRUCK LINES INC2645178Sep 25, 2023Apr 27, 20242CA
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.
4WG1224CA2ORGANIC WEST MILK TRANSPORT INCAug 14, 2026Aug 14, 20261
4WG1224CASANDAIR CORPORATIONApr 10, 2025Mar 17, 20262
STL6766CA2SUPERIOR TRUCK LINES INCSep 25, 2023Apr 27, 20242
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Aug 16, 2026