Equipment unit · VIN-decoded · NHTSA vPIC

2007 Heil Trailer International

5HTDL452X75G21834 · Trailer · TRAILER
Carriers run under1
11 mo
Inspections9
all-time
OOS inspections3
of 9
First seenJul 6, 2025
TX
Last seenJun 19, 2026
TX
01

Decoded identity

From the 17-character VIN via NHTSA vPIC

VIN
5HTDL452X75G21834
Make
Heil Trailer International
Model
Heil Trailer International
Model year
2007
Body class
Trailer
Vehicle type
TRAILER
GVWR
Not decoded
Decoded at
Jun 21, 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
5HT

Deterministic · VIN positions 1–3.

Vehicle descriptor section
DL452

Deterministic · VIN positions 4–8.

Check digit
X · valid

Deterministic · position 9; calculated value X.

Model year candidates
2007 or 2037

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

North American serial sequence
G21834

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 · 134 decoded VINs at 100.0% prefix purity.

Model
Heil Trailer International

Prefix basis · 134 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
2007

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 · Jul 6, 2025 – Jun 19, 2026

DateStateLevelViol.OOSCarrier (DOT)Plate
Jun 19, 2026TXII · Walk-around0KNOWLES TRUCKING LLC 1246064TP5218/ID
Apr 12, 2026TXII · Walk-around0KNOWLES TRUCKING LLC 1246064TP5218/ID
Mar 20, 2026TXI · Full3OOSKNOWLES TRUCKING LLC 1246064TP5218/ID
Feb 17, 2026TXI · Full7OOSKNOWLES TRUCKING LLC 1246064TP5218/ID
Jan 13, 2026TXII · Walk-around0KNOWLES TRUCKING LLC 1246064TP5218/ID
Dec 18, 2025TXII · Walk-around1KNOWLES TRUCKING LLC 1246064TP5218/ID
Aug 11, 2025TXII · Walk-around0KNOWLES TRUCKING LLC 1246064TP5218/ID
Aug 6, 2025TXII · Walk-around1KNOWLES TRUCKING LLC 1246064TP5218/ID
Jul 6, 2025TXII · Walk-around7OOSKNOWLES TRUCKING LLC 1246064TP5218/ID
03

Carriers this unit has run under

1 distinct carrier · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
KNOWLES TRUCKING LLC1246064Jul 6, 2025Jun 19, 20269OK
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.
TP5218ID2KNOWLES TRUCKING LLCJul 6, 2025Jun 19, 20269
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Jun 21, 2026