Equipment unit · VIN-decoded · NHTSA vPIC

2011 Kenworth T8 Series

3WKDD40X4BF833851 · Truck-Tractor · TRUCK
Carriers run under1
37 mo
Inspections30
all-time
OOS inspections9
of 30
First seenJun 13, 2023
US
Last seenJul 2, 2026
US
01

Decoded identity

From the 17-character VIN via NHTSA vPIC

VIN
3WKDD40X4BF833851
Make
Kenworth
Model
T8 Series
Model year
2011
Body class
Truck-Tractor
Vehicle type
TRUCK
GVWR
Class 8: 33,001 lb and above (14,969 kg and above)
Decoded at
Jun 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
DD40X

Deterministic · VIN positions 4–8.

Check digit
4 · valid

Deterministic · position 9; calculated value 4.

Model year candidates
1981 or 2011

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

North American serial sequence
833851

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
2011

Observed directly for this VIN via NHTSA vPIC.

Observed make
KENWORTH

Observed directly for this VIN via NHTSA vPIC.

Observed model
T8 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 · Jun 13, 2023 – Jul 2, 2026

DateStateLevelViol.OOSCarrier (DOT)Plate
Jul 2, 2026USI · Full4MARIA ISABEL CASTILLO SALAZAR 385024532AU7C/MX
Jun 2, 2026TXII · Walk-around3MARIA ISABEL CASTILLO SALAZAR 385024532AU7C/MX
Apr 28, 2026TXII · Walk-around4MARIA ISABEL CASTILLO SALAZAR 385024532AU7C/MX
Apr 23, 2026TXII · Walk-around7MARIA ISABEL CASTILLO SALAZAR 385024532AU7C/MX
Jan 6, 2026USI · Full3MARIA ISABEL CASTILLO SALAZAR 385024532AU7C/MX
Jan 6, 2026TXIII · Driver-only0MARIA ISABEL CASTILLO SALAZAR 385024532AU7C/MX
Dec 5, 2025TXII · Walk-around2OOSMARIA ISABEL CASTILLO SALAZAR 385024532AU7C/MX
Nov 28, 2025USI · Full2MARIA ISABEL CASTILLO SALAZAR 385024532AU7C/MX
Oct 31, 2025USIII · Driver-only0MARIA ISABEL CASTILLO SALAZAR 385024532AU7C/MX
Oct 31, 2025USI · Full3OOSMARIA ISABEL CASTILLO SALAZAR 385024532AU7C/MX
Oct 9, 2025USI · Full5MARIA ISABEL CASTILLO SALAZAR 385024532AU7C/MX
Jul 10, 2025USI · Full9OOSMARIA ISABEL CASTILLO SALAZAR 385024532AU7C/MX
May 8, 2025USI · Full2MARIA ISABEL CASTILLO SALAZAR 385024532AU7C/MX
Mar 28, 2025USI · Full5OOSMARIA ISABEL CASTILLO SALAZAR 385024532AU7C/MX
Jan 7, 2025USI · Full4OOSMARIA ISABEL CASTILLO SALAZAR 385024532AU7C/MX
Aug 29, 2024USI · Full4OOSMARIA ISABEL CASTILLO SALAZAR 385024532AU7C/MX
Aug 8, 2024USII · Walk-around1MARIA ISABEL CASTILLO SALAZAR 385024532AU7C/MX
Jul 23, 2024USII · Walk-around2OOSMARIA ISABEL CASTILLO SALAZAR 385024532AU7C/MX
May 30, 2024USI · Full3MARIA ISABEL CASTILLO SALAZAR 385024532AU7C/MX
Apr 24, 2024USI · Full4OOSMARIA ISABEL CASTILLO SALAZAR 385024532AU7C/MX
Mar 15, 2024USII · Walk-around1MARIA ISABEL CASTILLO SALAZAR 385024532AU7C/MX
Mar 1, 2024USII · Walk-around0MARIA ISABEL CASTILLO SALAZAR 385024532AU7C/MX
Feb 21, 2024TXI · Full3MARIA ISABEL CASTILLO SALAZAR 385024532AU7C/MX
Feb 1, 2024USII · Walk-around0MARIA ISABEL CASTILLO SALAZAR 385024532AU7C/MX
Dec 29, 2023USII · Walk-around0MARIA ISABEL CASTILLO SALAZAR 385024532AU7C/MX
Dec 8, 2023USII · Walk-around1MARIA ISABEL CASTILLO SALAZAR 385024532AU7C/MX
Nov 15, 2023USII · Walk-around0MARIA ISABEL CASTILLO SALAZAR 385024532AU7C/MX
Sep 8, 2023USII · Walk-around0MARIA ISABEL CASTILLO SALAZAR 385024532AU7C/MX
Aug 24, 2023USI · Full3OOSMARIA ISABEL CASTILLO SALAZAR 385024532AU7C/MX
Jun 13, 2023USII · Walk-around0MARIA ISABEL CASTILLO SALAZAR 385024532AU7C/MX
03

Carriers this unit has run under

1 distinct carrier · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
MARIA ISABEL CASTILLO SALAZAR3850245Jun 13, 2023Jul 2, 202630NL
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.
32AU7CMX1MARIA ISABEL CASTILLO SALAZARJun 13, 2023Jul 2, 202630
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Jun 14, 2026