Equipment unit · VIN-decoded · NHTSA vPIC

2021 Kenworth T680

1XKYD49X8MJ977003 · Truck-Tractor · TRUCK
Carriers run under2
25 mo
Inspections8
all-time
OOS inspections1
of 8
First seenMar 16, 2024
AK
Last seenApr 28, 2026
CA
Inspected under 2 different carriers in 25 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
1XKYD49X8MJ977003
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 23, 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
8 · valid

Deterministic · position 9; calculated value 8.

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
977003

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 16, 2024 – Apr 28, 2026

DateStateLevelViol.OOSCarrier (DOT)Plate
Apr 28, 2026CAI · Full0TRANSFRT MCNAMARA INC 463475PB29707/ON
Apr 16, 2026UTIII · Driver-only0TRANSFRT MCNAMARA INC 463475PB29707/ON
Nov 20, 2025MTIII · Driver-only0TRANSFRT MCNAMARA INC 463475PB29707/ON
Nov 19, 2025UTIII · Driver-only1TRANSFRT MCNAMARA INC 463475PB29707/ON
Mar 6, 2025AKII · Walk-around0CARON TRANSPORTATION SYSTEMS PARTNERSHIP 233496A82330/AB
Nov 10, 2024AKIII · Driver-only0CARON TRANSPORTATION SYSTEMS PARTNERSHIP 233496KMS436/AK
Jun 13, 2024AKII · Walk-around0CARON TRANSPORTATION SYSTEMS PARTNERSHIP 233496A82330/AB
Mar 16, 2024AKII · Walk-around1OOSCARON TRANSPORTATION SYSTEMS PARTNERSHIP 233496A82330/AB
03

Carriers this unit has run under

2 distinct carriers · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
TRANSFRT MCNAMARA INC463475Nov 19, 2025Apr 28, 20264ON
CARON TRANSPORTATION SYSTEMS PARTNERSHIP233496Mar 16, 2024Mar 6, 20254AB
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.
PB29707ONTRANSFRT MCNAMARA INCNov 19, 2025Apr 28, 20264
A82330AB1CARON TRANSPORTATION SYSTEMS PARTNERSHIPMar 16, 2024Mar 6, 20253
KMS436AK1CARON TRANSPORTATION SYSTEMS PARTNERSHIPNov 10, 2024Nov 10, 20241
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Jun 23, 2026