Equipment unit · VIN-decoded · NHTSA vPIC

2025 Polar Tank Trailer

1PMKD4333S1174888 · Trailer · TRAILER
Carriers run under1
14 mo
Inspections6
all-time
OOS inspections0
of 6
First seenNov 14, 2024
UT
Last seenJan 29, 2026
UT
01

Decoded identity

From the 17-character VIN via NHTSA vPIC

VIN
1PMKD4333S1174888
Make
Polar Tank Trailer
Model
Polar Tank Trailer
Model year
2025
Body class
Trailer
Vehicle type
TRAILER
GVWR
Not decoded
Decoded at
Jun 22, 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
KD433

Deterministic · VIN positions 4–8.

Check digit
3 · valid

Deterministic · position 9; calculated value 3.

Model year candidates
1995 or 2025

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

North American serial sequence
174888

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 · 59 decoded VINs at 100.0% prefix purity.

Model
Polar Tank Trailer

Prefix basis · 59 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
2025

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 · Nov 14, 2024 – Jan 29, 2026

DateStateLevelViol.OOSCarrier (DOT)Plate
Jan 29, 2026UTIII · Driver-only0BASIN WESTERN INC 167011A542460/UT
Oct 14, 2025UTIII · Driver-only0BASIN WESTERN INC 167011A542460/UT
Sep 21, 2025UTIII · Driver-only1BASIN WESTERN INC 167011A542460/UT
May 8, 2025UTI · Full0BASIN WESTERN INC 167011A542460/UT
Jan 19, 2025UTIII · Driver-only0BASIN WESTERN INC 167011A542460/UT
Nov 14, 2024UTIII · Driver-only1BASIN WESTERN INC 167011A542460/UT
03

Carriers this unit has run under

1 distinct carrier · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
BASIN WESTERN INC167011Nov 14, 2024Jan 29, 20266UT
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.
A542460UTBASIN WESTERN INCNov 14, 2024Jan 29, 20266
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Jun 22, 2026