Equipment unit · VIN-decoded · NHTSA vPIC

2017 Polar Tank Trailer

1PMS54326H1049137 · Trailer · TRAILER
Carriers run under2
6 mo
Inspections3
all-time
OOS inspections0
of 3
First seenAug 30, 2025
AR
Last seenFeb 8, 2026
TX
Inspected under 2 different carriers in 6 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
1PMS54326H1049137
Make
Polar Tank Trailer
Model
Polar Tank Trailer
Model year
2017
Body class
Trailer
Vehicle type
TRAILER
GVWR
Not decoded
Decoded at
Jul 26, 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
1PM

Deterministic · VIN positions 1–3.

Vehicle descriptor section
S5432

Deterministic · VIN positions 4–8.

Check digit
6 · valid

Deterministic · position 9; calculated value 6.

Model year candidates
1987 or 2017

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

North American serial sequence
049137

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
POLAR TANK TRAILER

Prefix basis · 24 decoded VINs at 100.0% prefix purity.

Model
Polar Tank Trailer

Prefix basis · 24 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
2017

Observed directly for this VIN via NHTSA vPIC.

Observed make
POLAR TANK TRAILER

Observed directly for this VIN via NHTSA vPIC.

Observed model
Polar Tank Trailer

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 · Aug 30, 2025 – Feb 8, 2026

DateStateLevelViol.OOSCarrier (DOT)Plate
Feb 8, 2026TXII · Walk-around1KITZMAN LAST STAND LLC 1343528962418ST/IL
Feb 5, 2026TXII · Walk-around0KITZMAN LAST STAND LLC 1343528962418ST/IL
Aug 30, 2025ARI · Full0FOUR CORNERS TRANSPORT LLC 4173159962418ST/IL
03

Carriers this unit has run under

2 distinct carriers · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
KITZMAN LAST STAND LLC1343528Feb 5, 2026Feb 8, 20262CO
FOUR CORNERS TRANSPORT LLC4173159Aug 30, 2025Aug 30, 20251NM
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.
962418STILKITZMAN LAST STAND LLCFeb 5, 2026Feb 8, 20262
962418STILFOUR CORNERS TRANSPORT LLCAug 30, 2025Aug 30, 20251
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Jul 26, 2026