Equipment unit · VIN-decoded · NHTSA vPIC

2021 Kenworth T680

1XKYD49X1MJ447519 · Truck-Tractor · TRUCK
Carriers run under3
26 mo
Inspections12
all-time
OOS inspections1
of 12
First seenMar 29, 2024
WY
Last seenMay 19, 2026
CA
Inspected under 3 different carriers in 26 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
1XKYD49X1MJ447519
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
Jun 17, 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
447519

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 · Mar 29, 2024 – May 19, 2026

DateStateLevelViol.OOSCarrier (DOT)Plate
May 19, 2026CAII · Walk-around0DULAY BROS TRUCKING INC 4045054ZP30551/CA
Mar 31, 2026CAIII · Driver-only0DULAY BROS TRUCKING INC 4045054ZP30551/CA
Mar 12, 2026CAII · Walk-around0DULAY BROS TRUCKING INC 4045054ZP30551/CA
Mar 3, 2026ORIII · Driver-only0DULAY BROS TRUCKING INC 4045054ZP30551/CA
Feb 10, 2026WAIII · Driver-only1DULAY BROS TRUCKING INC 4045054ZP30551/CA
Jan 13, 2026ORIII · Driver-only1DULAY BROS TRUCKING INC 4045054ZP30551/CA
Dec 19, 2025CAIII · Driver-only0DULAY BROS TRUCKING INC 4045054ZP30551/CA
Nov 18, 2025WAIII · Driver-only4DULAY BROS TRUCKING INC 4045054ZP30551/CA
Jun 28, 2025CAII · Walk-around0DULAY BROS TRUCKING INC 4045054ZP30551/CA
May 21, 2025ORIII · Driver-only1DULAY BROS TRUCKING INC 4045054ZP30551/CA
Apr 17, 2025WAII · Walk-around6OOSNORTHPOINT TRUCKING INC 4265186ZP30551/CA
Mar 29, 2024WYIII · Driver-only0STEVENS TRANSPORT INC 79466R650113/TX
03

Carriers this unit has run under

3 distinct carriers · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
DULAY BROS TRUCKING INC4045054May 21, 2025May 19, 202610CA
NORTHPOINT TRUCKING INC4265186Apr 17, 2025Apr 17, 20251CA
STEVENS TRANSPORT INC79466Mar 29, 2024Mar 29, 20241TX
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.
ZP30551CADULAY BROS TRUCKING INCMay 21, 2025May 19, 202610
ZP30551CANORTHPOINT TRUCKING INCApr 17, 2025Apr 17, 20251
R650113TXSTEVENS TRANSPORT INCMar 29, 2024Mar 29, 20241
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Jun 17, 2026