Equipment unit · VIN-decoded · NHTSA vPIC

1986 Kenworth T600

3WKAD49X6GF495057 · Truck-Tractor · TRUCK
Carriers run under2
25 mo
Inspections4
all-time
OOS inspections2
of 4
First seenJun 18, 2024
WI
Last seenJul 7, 2026
IL
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
3WKAD49X6GF495057
Make
Kenworth
Model
T600
Model year
1986
Body class
Truck-Tractor
Vehicle type
TRUCK
GVWR
Class 8: 33,001 lb and above (14,969 kg and above)
Decoded at
Jul 14, 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
3WK

Deterministic · VIN positions 1–3.

Vehicle descriptor section
AD49X

Deterministic · VIN positions 4–8.

Check digit
6 · valid

Deterministic · position 9; calculated value 6.

Model year candidates
1986 or 2016

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

North American serial sequence
495057

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.

Not established

No supported platform claim is established for this prefix

The resolver answered successfully but returned no row above the evidence floor. This does not mean the vehicle has no platform or that no data exists; it means this store cannot make the claim.

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
1986

Observed directly for this VIN via NHTSA vPIC.

Observed make
KENWORTH

Observed directly for this VIN via NHTSA vPIC.

Observed model
T600

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

  • platform make
  • platform model
  • model line
  • generation
  • cab type

These are withheld claims, not negative findings.

02

Inspection history

Every roadside inspection of this VIN, newest first · Jun 18, 2024 – Jul 7, 2026

DateStateLevelViol.OOSCarrier (DOT)Plate
Jul 7, 2026ILII · Walk-around1WISCONSIN TRANSIT CO INC 203361866076X/WI
Jan 20, 2026MOIII · Driver-only1OOSWISCONSIN TRANSIT CO INC 203361866076X/WI
Nov 13, 2025KSIII · Driver-only2OOSWISCONSIN TRANSIT CO INC 203361866076X/WI
Jun 18, 2024WIII · Walk-around2SCHULZ TRANSPORT MARKESAN LLC 32695062468Z/WI
03

Carriers this unit has run under

2 distinct carriers · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
WISCONSIN TRANSIT CO INC2033618Nov 13, 2025Jul 7, 20263WI
SCHULZ TRANSPORT MARKESAN LLC326950Jun 18, 2024Jun 18, 20241WI
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.
66076XWI1WISCONSIN TRANSIT CO INCNov 13, 2025Jul 7, 20263
62468ZWISCHULZ TRANSPORT MARKESAN LLCJun 18, 2024Jun 18, 20241
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Jul 14, 2026