Equipment unit · VIN-decoded · NHTSA vPIC

2012 Kenworth T6 Series

3WKAD40X4CF838939 · Truck-Tractor · TRUCK
Carriers run under1
27 mo
Inspections13
all-time
OOS inspections1
of 13
First seenMay 10, 2024
TX
Last seenAug 4, 2026
US
01

Decoded identity

From the 17-character VIN via NHTSA vPIC

VIN
3WKAD40X4CF838939
Make
Kenworth
Model
T6 Series
Model year
2012
Body class
Truck-Tractor
Vehicle type
TRUCK
GVWR
Class 8: 33,001 lb and above (14,969 kg and above)
Decoded at
Jun 21, 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
AD40X

Deterministic · VIN positions 4–8.

Check digit
4 · valid

Deterministic · position 9; calculated value 4.

Model year candidates
1982 or 2012

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

North American serial sequence
838939

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
2012

Observed directly for this VIN via NHTSA vPIC.

Observed make
KENWORTH

Observed directly for this VIN via NHTSA vPIC.

Observed model
T6 Series

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 · May 10, 2024 – Aug 4, 2026

DateStateLevelViol.OOSCarrier (DOT)Plate
Aug 4, 2026USIII · Driver-only1TRALFER LOGISTICS SA DE CV 1887193446AG7/MX
Jul 20, 2026TXI · Full4TRALFER LOGISTICS SA DE CV 1887193446AG7/MX
Jul 1, 2026TXI · Full3TRALFER LOGISTICS SA DE CV 1887193446AG7/MX
Jun 16, 2026TXI · Full1TRALFER LOGISTICS SA DE CV 1887193446AG7/MX
Apr 8, 2026USI · Full4TRALFER LOGISTICS SA DE CV 1887193446AG7/MX
Mar 11, 2026TXI · Full2TRALFER LOGISTICS SA DE CV 1887193446AG7/MX
Aug 1, 2025TXI · Full0TRALFER LOGISTICS SA DE CV 1887193446AG7/MX
Jun 18, 2025TXI · Full0TRALFER LOGISTICS SA DE CV 1887193446AG7/MX
Dec 5, 2024USI · Full5TRALFER LOGISTICS SA DE CV 1887193446AG7/MX
Sep 23, 2024USI · Full0TRALFER LOGISTICS SA DE CV 1887193446AG7/NL
Sep 2, 2024TXI · Full3TRALFER LOGISTICS SA DE CV 1887193446AG7/MX
May 22, 2024TXI · Full0TRALFER LOGISTICS SA DE CV 1887193446AG7/MX
May 10, 2024TXI · Full7OOSTRALFER LOGISTICS SA DE CV 1887193446AG7/MX
03

Carriers this unit has run under

1 distinct carrier · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
TRALFER LOGISTICS SA DE CV1887193May 10, 2024Aug 4, 202613NL
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.
446AG7MX1TRALFER LOGISTICS SA DE CVMay 10, 2024Aug 4, 202612
446AG7NLTRALFER LOGISTICS SA DE CVSep 23, 2024Sep 23, 20241
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Jun 21, 2026