Equipment unit · VIN-decoded · NHTSA vPIC

2021 Kenworth T680

1XKYD49X1MJ437508 · Truck-Tractor · TRUCK
Carriers run under2
27 mo
Inspections5
all-time
OOS inspections0
of 5
First seenJul 25, 2024
NM
Last seenOct 12, 2026
CA
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
1XKYD49X1MJ437508
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 10, 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
1 · valid

Deterministic · position 9; calculated value 1.

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
437508

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.

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 · Jul 25, 2024 – Oct 12, 2026

DateStateLevelViol.OOSCarrier (DOT)Plate
Oct 12, 2026CAII · Walk-around1—BLUEWOLF EXPRESS INC 3144827ZP23951/CA
Nov 28, 2025AZIII · Driver-only9—BLUEWOLF EXPRESS INC 3144827ZP23951/CA
Nov 28, 2025AZIII · Driver-only9—BLUEWOLF EXPRESS INC 3144827ZP23951/CA
Aug 18, 2025AZII · Walk-around5—BLUEWOLF EXPRESS INC 3144827ZP23951/CA
Jul 25, 2024NMIII · Driver-only0—WERNER ENTERPRISES INC 53467W35349/NE
03

Carriers this unit has run under

2 distinct carriers · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
BLUEWOLF EXPRESS INC3144827Aug 18, 2025Oct 12, 20264CA
WERNER ENTERPRISES INC53467Jul 25, 2024Jul 25, 20241NE
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.
ZP23951CA1BLUEWOLF EXPRESS INCAug 18, 2025 → Oct 12, 20264
W35349NE—WERNER ENTERPRISES INCJul 25, 2024 → Jul 25, 20241
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Jul 10, 2026