Equipment unit · VIN-decoded · NHTSA vPIC

3WKZD40X9LF413879

Not yet decoded
Carriers run under1
21 mo
Inspections2
all-time
OOS inspections0
of 2
First seenNov 13, 2023
AZ
Last seenAug 7, 2025
AZ
01

Decoded identity

From the 17-character VIN via NHTSA vPIC

This VIN has not been decoded yet — the unit's carrier, inspection and plate history below is reconstructed from the FMCSA inspection feed regardless.

Decode evidence & sources

Deterministic structure

These fields come directly from VIN positions and the published checksum calculation, with zero store IO.

World manufacturer identifier
3WK

Deterministic · VIN positions 1–3.

Vehicle descriptor section
ZD40X

Deterministic · VIN positions 4–8.

Check digit
9 · valid

Deterministic · position 9; calculated value 9.

Model year candidates
1990 or 2020

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

North American serial sequence
413879

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
KENWORTH

Prefix basis · 284 decoded VINs at 100.0% prefix purity.

Model
T880

Prefix basis · 284 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.

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 · Nov 13, 2023 – Aug 7, 2025

DateStateLevelViol.OOSCarrier (DOT)Plate
Aug 7, 2025AZII · Walk-around7ROBERTS TIRE SALES INC 11059808TB647/AZ
Nov 13, 2023AZII · Walk-around4ROBERTS TIRE SALES INC 11059808TB647/AZ
03

Carriers this unit has run under

1 distinct carrier · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
ROBERTS TIRE SALES INC1105980Nov 13, 2023Aug 7, 20252AZ
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.
8TB647AZROBERTS TIRE SALES INCNov 13, 2023Aug 7, 20252
Sources: FMCSA SAFER · L&I · NHTSA vPIC