Equipment unit · VIN-decoded · NHTSA vPIC

2017

4KNUT1625HL161629 · TRAILER
Carriers run under1
26 mo
Inspections7
all-time
OOS inspections4
of 7
First seenJun 15, 2023
CA
Last seenAug 25, 2025
CA
01

Decoded identity

From the 17-character VIN via NHTSA vPIC

VIN
4KNUT1625HL161629
Make
Not decoded
Model
Not decoded
Model year
2017
Body class
Not decoded
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
4KN

Deterministic · VIN positions 1–3.

Vehicle descriptor section
UT162

Deterministic · VIN positions 4–8.

Check digit
5 · valid

Deterministic · position 9; calculated value 5.

Model year candidates
1987 or 2017

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

North American serial sequence
161629

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
TOWMASTER INC.

Prefix basis · 5 decoded VINs at 100.0% prefix purity.

Model
Towmaster Inc.

Prefix basis · 5 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
2017

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
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 · Jun 15, 2023 – Aug 25, 2025

DateStateLevelViol.OOSCarrier (DOT)Plate
Aug 25, 2025CAI · Full3OOSCENTRAL VALLEY ENGINEERING & ASPHALT INC 18602954PV6639/CA
Sep 12, 2024CAIII · Driver-only0CENTRAL VALLEY ENGINEERING & ASPHALT INC 18602954PV6639/CA
Aug 30, 2024CAII · Walk-around1OOSCENTRAL VALLEY ENGINEERING & ASPHALT INC 18602954PV6639/CA
Aug 15, 2024CAI · Full0CENTRAL VALLEY ENGINEERING & ASPHALT INC 18602954PV6639/CA
Aug 15, 2024CAI · Full1OOSCENTRAL VALLEY ENGINEERING & ASPHALT INC 18602954PV6639/CA
Jun 20, 2024CAII · Walk-around2OOSCENTRAL VALLEY ENGINEERING & ASPHALT INC 18602954PV6639/CA
Jun 15, 2023CAI · Full0CENTRAL VALLEY ENGINEERING & ASPHALT INC 18602954PV6639/CA
03

Carriers this unit has run under

1 distinct carrier · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
CENTRAL VALLEY ENGINEERING & ASPHALT INC1860295Jun 15, 2023Aug 25, 20257CA
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.
4PV6639CACENTRAL VALLEY ENGINEERING & ASPHALT INCJun 15, 2023Aug 25, 20257
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Jun 21, 2026