Equipment unit · VIN-decoded · NHTSA vPIC

2007 Peterbilt 357

1NPALTEX57D731831 · Truck · INCOMPLETE VEHICLE
Carriers run under2
27 mo
Inspections6
all-time
OOS inspections4
of 6
First seenAug 8, 2023
OK
Last seenNov 17, 2025
OK
Inspected under 2 different carriers in 27 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
1NPALTEX57D731831
Make
Peterbilt
Model
357
Model year
2007
Body class
Truck
Vehicle type
INCOMPLETE VEHICLE
GVWR
Class 8: 33,001 lb and above (14,969 kg and above)
Decoded at
Jun 23, 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
1NP

Deterministic · VIN positions 1–3.

Vehicle descriptor section
ALTEX

Deterministic · VIN positions 4–8.

Check digit
5 · valid

Deterministic · position 9; calculated value 5.

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
731831

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
PETERBILT

Prefix basis · 21 decoded VINs at 100.0% prefix purity.

Model
357

Prefix basis · 21 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
PETERBILT

Observed directly for this VIN via NHTSA vPIC.

Observed model
357

Observed directly for this VIN via NHTSA vPIC.

Observed body class
Truck

Observed directly for this VIN via NHTSA vPIC.

Observed vehicle type
INCOMPLETE VEHICLE

Observed directly for this VIN via NHTSA vPIC.

GVWR
Class 8: 33,001 lb and above (14,969 kg and above)

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 8, 2023 – Nov 17, 2025

DateStateLevelViol.OOSCarrier (DOT)Plate
Nov 17, 2025OKII · Walk-around9OOSMUSKOGEE REDI-MIX LLC 390477449C004/OK
May 17, 2025OKII · Walk-around6OOSMUSKOGEE REDI-MIX LLC 390477449C004/OK
Apr 15, 2025OKII · Walk-around9OOSMUSKOGEE REDI-MIX LLC 390477449C004/OK
Jun 6, 2024OKII · Walk-around9OOSMUSKOGEE REDI-MIX LLC 390477449004/OK
Nov 27, 2023OKII · Walk-around2MUSKOGEE REDI-MIX LLC 390477449C004/OK
Aug 8, 2023OKII · Walk-around1CONTECH INC 138450749C004/OK
03

Carriers this unit has run under

2 distinct carriers · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
MUSKOGEE REDI-MIX LLC3904774Nov 27, 2023Nov 17, 20255OK
CONTECH INC1384507Aug 8, 2023Aug 8, 20231OK
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.
49C004OKMUSKOGEE REDI-MIX LLCNov 27, 2023Nov 17, 20254
49004OKMUSKOGEE REDI-MIX LLCJun 6, 2024Jun 6, 20241
49C004OKCONTECH INCAug 8, 2023Aug 8, 20231
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Jun 23, 2026