Equipment unit · VIN-decoded · NHTSA vPIC

2024 Polar Tank Trailer

3H6KL4320R3123954 · Trailer · TRAILER
Carriers run under2
35 mo
Inspections6
all-time
OOS inspections1
of 6
First seenAug 25, 2023
NV
Last seenJul 23, 2026
CA
Inspected under 2 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
3H6KL4320R3123954
Make
Polar Tank Trailer
Model
Polar Tank Trailer
Model year
2024
Body class
Trailer
Vehicle type
TRAILER
GVWR
Not decoded
Decoded at
Jun 29, 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
3H6

Deterministic · VIN positions 1–3.

Vehicle descriptor section
KL432

Deterministic · VIN positions 4–8.

Check digit
0 · valid

Deterministic · position 9; calculated value 0.

Model year candidates
1994 or 2024

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

North American serial sequence
123954

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 · 70 decoded VINs at 100.0% prefix purity.

Model
Polar Tank Trailer

Prefix basis · 70 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
2024

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 25, 2023 – Jul 23, 2026

DateStateLevelViol.OOSCarrier (DOT)Plate
Jul 23, 2026CAI · Full0AC WILLS TRANSPORT LLC 33178254VW9346/CA
May 20, 2026CAI · Full0AC WILLS TRANSPORT LLC 33178254VW9346/CA
Sep 10, 2025CAI · Full5OOSAC WILLS TRANSPORT LLC 33178254VW9346/CA
Nov 23, 2024CAII · Walk-around0KING D TRUCKING INC 9799834VW9346/CA
Dec 2, 2023CAI · Full1KING D TRUCKING INC 97998336A15M/AZ
Aug 25, 2023NVII · Walk-around2KING D TRUCKING INC 97998336A15M/AZ
03

Carriers this unit has run under

2 distinct carriers · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
AC WILLS TRANSPORT LLC3317825Sep 10, 2025Jul 23, 20263CA
KING D TRUCKING INC979983Aug 25, 2023Nov 23, 20243CA
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.
4VW9346CA2AC WILLS TRANSPORT LLCSep 10, 2025Jul 23, 20263
4VW9346CAKING D TRUCKING INCNov 23, 2024Nov 23, 20241
36A15MAZKING D TRUCKING INCAug 25, 2023Dec 2, 20232
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Jun 29, 2026