Equipment unit · VIN-decoded · NHTSA vPIC

4S9V6TA21FG347039

Not yet decoded
Carriers run under3
23 mo
Inspections7
all-time
OOS inspections0
of 7
First seenDec 9, 2023
TX
Last seenNov 19, 2025
TX
Inspected under 3 different carriers in 23 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
4S9V6TA21FG347039
Make
Not decoded
Model
Not decoded
Model year
Body class
Not decoded
Vehicle type
Not decoded
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
4S9

Deterministic · VIN positions 1–3.

Vehicle descriptor section
V6TA2

Deterministic · VIN positions 4–8.

Check digit
1 · valid

Deterministic · position 9; calculated value 1.

Model year candidates
1985 or 2015

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

North American serial sequence
347039

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
SOUTHERN VAC TRAILERS LLC

Prefix basis · 13 decoded VINs at 100.0% prefix purity.

Model
Southern Vac Trailers LLC

Prefix basis · 13 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
Not established

Observed directly for this VIN via NHTSA vPIC.

Observed make
Not established

Observed directly for this VIN via NHTSA vPIC.

Observed model
Not established

Observed directly for this VIN via NHTSA vPIC.

Observed body class
Not established

Observed directly for this VIN via NHTSA vPIC.

Observed vehicle type
Not established

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 · Dec 9, 2023 – Nov 19, 2025

DateStateLevelViol.OOSCarrier (DOT)Plate
Nov 19, 2025TXII · Walk-around5DELSA LOGISTICS LLC 2332876181C485/TX
Oct 7, 2025TXII · Walk-around0DELSA LOGISTICS LLC 2332876181C485/TX
May 1, 2025TXII · Walk-around3DELSA LOGISTICS LLC 2332876181C485/TX
Feb 7, 2025TXI · Full1DELSA LOGISTICS LLC 2332876181C485/TX
Feb 3, 2025TXII · Walk-around0DELSA LOGISTICS LLC 2332876181C485/TX
Nov 3, 2024TXII · Walk-around1MUZQUIZ TRANSPORT AND LOGISTICS LLC 3979835181C485/TX
Dec 9, 2023TXII · Walk-around2DELSA LOGISTICS MEXICO S DE RL DE CV 2561661181C485/TX
03

Carriers this unit has run under

3 distinct carriers · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
DELSA LOGISTICS LLC2332876Feb 3, 2025Nov 19, 20255TX
MUZQUIZ TRANSPORT AND LOGISTICS LLC3979835Nov 3, 2024Nov 3, 20241TX
DELSA LOGISTICS MEXICO S DE RL DE CV2561661Dec 9, 2023Dec 9, 20231CH
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.
181C485TXDELSA LOGISTICS LLCFeb 3, 2025Nov 19, 20255
181C485TXMUZQUIZ TRANSPORT AND LOGISTICS LLCNov 3, 2024Nov 3, 20241
181C485TXDELSA LOGISTICS MEXICO S DE RL DE CVDec 9, 2023Dec 9, 20231
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Jun 21, 2026