Equipment unit · VIN-decoded · NHTSA vPIC

2019 Heil Trailer International

3H4SS4227K3710445 · Trailer · TRAILER
Carriers run under1
15 mo
Inspections6
all-time
OOS inspections0
of 6
First seenFeb 18, 2025
TX
Last seenMay 29, 2026
TX
01

Decoded identity

From the 17-character VIN via NHTSA vPIC

VIN
3H4SS4227K3710445
Make
Heil Trailer International
Model
Heil Trailer International
Model year
2019
Body class
Trailer
Vehicle type
TRAILER
GVWR
Not decoded
Decoded at
Jun 24, 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
3H4

Deterministic · VIN positions 1–3.

Vehicle descriptor section
SS422

Deterministic · VIN positions 4–8.

Check digit
7 · valid

Deterministic · position 9; calculated value 7.

Model year candidates
1989 or 2019

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

North American serial sequence
710445

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
HEIL TRAILER INTERNATIONAL

Prefix basis · 127 decoded VINs at 100.0% prefix purity.

Model
Heil Trailer International

Prefix basis · 127 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
2019

Observed directly for this VIN via NHTSA vPIC.

Observed make
HEIL TRAILER INTERNATIONAL

Observed directly for this VIN via NHTSA vPIC.

Observed model
Heil Trailer International

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 · Feb 18, 2025 – May 29, 2026

DateStateLevelViol.OOSCarrier (DOT)Plate
May 29, 2026TXII · Walk-around2MAX MAHAN COMPANY INC 189523118C291/TX
Feb 3, 2026TXII · Walk-around0MAX MAHAN COMPANY INC 189523118C291/TX
Jan 20, 2026TXII · Walk-around0MAX MAHAN COMPANY INC 189523118C291/TX
Jun 17, 2025TXII · Walk-around0MAX MAHAN COMPANY INC 189523118C291/TX
Jun 4, 2025TXII · Walk-around0MAX MAHAN COMPANY INC 189523118C291/TX
Feb 18, 2025TXII · Walk-around0MAX MAHAN COMPANY INC 189523118C291/TX
03

Carriers this unit has run under

1 distinct carrier · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
MAX MAHAN COMPANY INC189523Feb 18, 2025May 29, 20266TX
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.
118C291TXMAX MAHAN COMPANY INCFeb 18, 2025May 29, 20266
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Jun 24, 2026