Equipment unit · VIN-decoded · NHTSA vPIC

2021 Kenworth T680

1XKYD49X6MJ456166 · Truck-Tractor · TRUCK
Carriers run under2
20 mo
Inspections5
all-time
OOS inspections0
of 5
First seenOct 21, 2024
IL
Last seenJun 30, 2026
CA
Inspected under 2 different carriers in 20 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
1XKYD49X6MJ456166
Make
Kenworth
Model
T680
Model year
2021
Body class
Truck-Tractor
Vehicle type
TRUCK
GVWR
Class 8: 33,001 lb and above (14,969 kg and above)
Decoded at
Jul 4, 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
1XK

Deterministic · VIN positions 1–3.

Vehicle descriptor section
YD49X

Deterministic · VIN positions 4–8.

Check digit
6 · valid

Deterministic · position 9; calculated value 6.

Model year candidates
1991 or 2021

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

North American serial sequence
456166

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 · 43,483 decoded VINs at 100.0% prefix purity.

Model
T680

Prefix basis · 43,483 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
2021

Observed directly for this VIN via NHTSA vPIC.

Observed make
KENWORTH

Observed directly for this VIN via NHTSA vPIC.

Observed model
T680

Observed directly for this VIN via NHTSA vPIC.

Observed body class
Truck-Tractor

Observed directly for this VIN via NHTSA vPIC.

Observed vehicle type
TRUCK

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 · Oct 21, 2024 – Jun 30, 2026

DateStateLevelViol.OOSCarrier (DOT)Plate
Jun 30, 2026CAII · Walk-around5PALACIOS TRANSPORT SERVICE LLC 4325390ZP35166/CA
Jul 22, 2025CAIII · Driver-only1PALACIOS TRANSPORT SERVICE LLC 4325390ZP35166/CA
Mar 15, 2025CAIII · Driver-only0PALACIOS TRANSPORT SERVICE LLC 4325390ZP35166/CA
Oct 24, 2024KSII · Walk-around5SAN JOSE TRUCKING INC 3012530ZP35103/CA
Oct 21, 2024ILII · Walk-around0SAN JOSE TRUCKING INC 3012530ZP35103/CA
03

Carriers this unit has run under

2 distinct carriers · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
PALACIOS TRANSPORT SERVICE LLC4325390Mar 15, 2025Jun 30, 20263CA
SAN JOSE TRUCKING INC3012530Oct 21, 2024Oct 24, 20242CA
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.
ZP35166CA1PALACIOS TRANSPORT SERVICE LLCMar 15, 2025Jun 30, 20263
ZP35103CASAN JOSE TRUCKING INCOct 21, 2024Oct 24, 20242
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Jul 4, 2026