Equipment unit · VIN-decoded · NHTSA vPIC

2022 Polar Tank Trailer

3H6KF4328N3118244 · Trailer · TRAILER
Carriers run under1
30 mo
Inspections8
all-time
OOS inspections1
of 8
First seenSep 1, 2023
TX
Last seenMar 6, 2026
IA
01

Decoded identity

From the 17-character VIN via NHTSA vPIC

VIN
3H6KF4328N3118244
Make
Polar Tank Trailer
Model
Polar Tank Trailer
Model year
2022
Body class
Trailer
Vehicle type
TRAILER
GVWR
Not decoded
Decoded at
Jun 18, 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
KF432

Deterministic · VIN positions 4–8.

Check digit
8 · valid

Deterministic · position 9; calculated value 8.

Model year candidates
1992 or 2022

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

North American serial sequence
118244

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 · 415 decoded VINs at 100.0% prefix purity.

Model
Polar Tank Trailer

Prefix basis · 415 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
2022

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 · Sep 1, 2023 – Mar 6, 2026

DateStateLevelViol.OOSCarrier (DOT)Plate
Mar 6, 2026IAII · Walk-around1OOSQUEST LINER INC 1609038815955/WI
Jan 5, 2026MOI · Full0QUEST LINER INC 1609038815955/WI
Nov 25, 2025IAI · Full1QUEST LINER INC 1609038815955/WI
Jul 2, 2025MOII · Walk-around1QUEST LINER INC 1609038815955/WI
Mar 11, 2025OKII · Walk-around1QUEST LINER INC 1609038815955/WI
Apr 1, 2024OKI · Full0QUEST LINER INC 1609038815955/WI
Dec 29, 2023IAII · Walk-around3QUEST LINER INC 1609038815955/WI
Sep 1, 2023TXII · Walk-around0QUEST LINER INC 1609038815955/WI
03

Carriers this unit has run under

1 distinct carrier · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
QUEST LINER INC1609038Sep 1, 2023Mar 6, 20268IA
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.
815955WIQUEST LINER INCSep 1, 2023Mar 6, 20268
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Jun 18, 2026