Equipment unit · VIN-decoded · NHTSA vPIC

2021 Kenworth T680

1XKYD49X6MJ435124 · Truck-Tractor · TRUCK
Carriers run under4
16 mo
Inspections6
all-time
OOS inspections0
of 6
First seenFeb 5, 2025
SD
Last seenJun 24, 2026
SD
Inspected under 4 different carriers in 16 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
1XKYD49X6MJ435124
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 27, 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
435124

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 · Feb 5, 2025 – Jun 24, 2026

DateStateLevelViol.OOSCarrier (DOT)Plate
Jun 24, 2026SDIII · Driver-only0SIBIC TRUCKING LLC 153982399KU2A/MO
Sep 7, 2025WAII · Walk-around2TRANSPORT DESIGNS INC 272811TEMP/MN
Apr 23, 2025TXII · Walk-around2SMITH TRANSPORTATION INC 853967ADW389/KS
Mar 18, 2025NCIII · Driver-only0SMITH TRANSPORTATION INC 853967TEMP/KS
Feb 22, 2025KSII · Walk-around0DOUG BRADLEY TRUCKING INC 214440ADJ359/KS
Feb 5, 2025SDIII · Driver-only0DOUG BRADLEY TRUCKING INC 214440ADJ359/KS
03

Carriers this unit has run under

4 distinct carriers · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
SIBIC TRUCKING LLC1539823Jun 24, 2026Jun 24, 20261MO
TRANSPORT DESIGNS INC272811Sep 7, 2025Sep 7, 20251MN
SMITH TRANSPORTATION INC853967Mar 18, 2025Apr 23, 20252KS
DOUG BRADLEY TRUCKING INC214440Feb 5, 2025Feb 22, 20252KS
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.
99KU2AMO1SIBIC TRUCKING LLCJun 24, 2026Jun 24, 20261
TEMPMNTRANSPORT DESIGNS INCSep 7, 2025Sep 7, 20251
ADW389KSSMITH TRANSPORTATION INCApr 23, 2025Apr 23, 20251
TEMPKSSMITH TRANSPORTATION INCMar 18, 2025Mar 18, 20251
ADJ359KSDOUG BRADLEY TRUCKING INCFeb 5, 2025Feb 22, 20252
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Jun 27, 2026