Equipment unit · VIN-decoded · NHTSA vPIC

2021 Kenworth T680

1XKYD49X1MJ435788 · Truck-Tractor · TRUCK
Carriers run under2
34 mo
Inspections6
all-time
OOS inspections0
of 6
First seenAug 23, 2023
KS
Last seenJun 15, 2026
TX
Inspected under 2 different carriers in 34 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
1XKYD49X1MJ435788
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 24, 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
435788

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 · Aug 23, 2023 – Jun 15, 2026

DateStateLevelViol.OOSCarrier (DOT)Plate
Jun 15, 2026TXII · Walk-around2J & M CARRIERS INC 240254600056BYR/TX
Jun 10, 2026TXII · Walk-around1J & M CARRIERS INC 240254600056BYR/TX
Jun 4, 2026TXII · Walk-around2J & M CARRIERS INC 240254600056BYR/TX
Jun 2, 2025SCII · Walk-around1SWIFT TRANSPORTATION COMPANY OF ARIZONA LLC 542833106114/IN
Sep 11, 2023KSIII · Driver-only1SWIFT TRANSPORTATION COMPANY OF ARIZONA LLC 542833106114/IN
Aug 23, 2023KSII · Walk-around0SWIFT TRANSPORTATION COMPANY OF ARIZONA LLC 542833106114/IN
03

Carriers this unit has run under

2 distinct carriers · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
J & M CARRIERS INC2402546Jun 4, 2026Jun 15, 20263TX
SWIFT TRANSPORTATION COMPANY OF ARIZONA LLC54283Aug 23, 2023Jun 2, 20253AZ
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.
00056BYRTX1J & M CARRIERS INCJun 4, 2026Jun 15, 20263
3106114INSWIFT TRANSPORTATION COMPANY OF ARIZONA LLCAug 23, 2023Jun 2, 20253
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Jun 24, 2026