Equipment unit · VIN-decoded · NHTSA vPIC

2021 Kenworth T680

1XKYD49X2MJ435539 · Truck-Tractor · TRUCK
Carriers run under2
29 mo
Inspections3
all-time
OOS inspections0
of 3
First seenDec 12, 2023
IL
Last seenMay 13, 2026
TX
Inspected under 2 different carriers in 29 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
1XKYD49X2MJ435539
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 26, 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
2 · valid

Deterministic · position 9; calculated value 2.

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
435539

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 · Dec 12, 2023 – May 13, 2026

DateStateLevelViol.OOSCarrier (DOT)Plate
May 13, 2026TXI · Full2MONGER HAULING INC 4091612W8226HY/TN
Aug 21, 2025NMII · Walk-around0SWIFT TRANSPORTATION COMPANY OF ARIZONA LLC 542833106363/IN
Dec 12, 2023ILIII · Driver-only0SWIFT TRANSPORTATION COMPANY OF ARIZONA LLC 542833106363/IN
03

Carriers this unit has run under

2 distinct carriers · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
MONGER HAULING INC4091612May 13, 2026May 13, 20261TN
SWIFT TRANSPORTATION COMPANY OF ARIZONA LLC54283Dec 12, 2023Aug 21, 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.
W8226HYTNMONGER HAULING INCMay 13, 2026May 13, 20261
3106363INSWIFT TRANSPORTATION COMPANY OF ARIZONA LLCDec 12, 2023Aug 21, 20252
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Jul 26, 2026