Equipment unit · VIN-decoded · NHTSA vPIC

2025 Kenworth T680

1XKYD49X0SJ156443 · Truck-Tractor · TRUCK
Carriers run under2
22 mo
Inspections5
all-time
OOS inspections1
of 5
First seenAug 29, 2024
MS
Last seenJun 12, 2026
LA
Inspected under 2 different carriers in 22 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
1XKYD49X0SJ156443
Make
Kenworth
Model
T680
Model year
2025
Body class
Truck-Tractor
Vehicle type
TRUCK
GVWR
Class 8: 33,001 lb and above (14,969 kg and above)
Decoded at
Jun 28, 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
0 · valid

Deterministic · position 9; calculated value 0.

Model year candidates
1995 or 2025

Position 10 repeats every 30 years; both candidates are retained and neither is silently selected.

North American serial sequence
156443

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
2025

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 29, 2024 – Jun 12, 2026

DateStateLevelViol.OOSCarrier (DOT)Plate
Jun 12, 2026LAIII · Driver-only0TENNESSEE STEEL HAULERS LLC 159317PWH6701/OH
Oct 31, 2025LAII · Walk-around2OOSBOYD BROS TRANSPORTATION LLC 92321PWH6701/OH
Apr 15, 2025GAIII · Driver-only1BOYD BROS TRANSPORTATION LLC 92321PWH6701/OH
Sep 25, 2024ARII · Walk-around0BOYD BROS TRANSPORTATION LLC 92321PWH6701/OH
Aug 29, 2024MSI · Full0BOYD BROS TRANSPORTATION LLC 92321PWH6701/OH
03

Carriers this unit has run under

2 distinct carriers · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
TENNESSEE STEEL HAULERS LLC159317Jun 12, 2026Jun 12, 20261TN
BOYD BROS TRANSPORTATION LLC92321Aug 29, 2024Oct 31, 20254AL
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.
PWH6701OHTENNESSEE STEEL HAULERS LLCJun 12, 2026Jun 12, 20261
PWH6701OHBOYD BROS TRANSPORTATION LLCAug 29, 2024Oct 31, 20254
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Jun 28, 2026