Equipment unit · VIN-decoded · NHTSA vPIC

2004 Kenworth T800

3WKDD40XX4F615741 · Truck-Tractor · TRUCK
Carriers run under1
31 mo
Inspections14
all-time
OOS inspections5
of 14
First seenDec 22, 2023
NM
Last seenJul 28, 2026
US
01

Decoded identity

From the 17-character VIN via NHTSA vPIC

VIN
3WKDD40XX4F615741
Make
Kenworth
Model
T800
Model year
2004
Body class
Truck-Tractor
Vehicle type
TRUCK
GVWR
Class 8: 33,001 lb and above (14,969 kg and above)
Decoded at
Jun 17, 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
X · valid

Deterministic · position 9; calculated value X.

Model year candidates
2004 or 2034

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

North American serial sequence
615741

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
2004

Observed directly for this VIN via NHTSA vPIC.

Observed make
KENWORTH

Observed directly for this VIN via NHTSA vPIC.

Observed model
T800

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 · Dec 22, 2023 – Jul 28, 2026

DateStateLevelViol.OOSCarrier (DOT)Plate
Jul 28, 2026USIII · Driver-only0SILVIA NAJERA BENCOMO 2856009176EA1/MX
Jun 23, 2026NMII · Walk-around4OOSSILVIA NAJERA BENCOMO 2856009176EA1/MX
Jun 5, 2026USI · Full1SILVIA NAJERA BENCOMO 2856009176EA1/MX
Apr 27, 2026USI · Full2SILVIA NAJERA BENCOMO 2856009176EA1/MX
Mar 18, 2026USI · Full3OOSSILVIA NAJERA BENCOMO 2856009176EA1/MX
Feb 13, 2026USI · Full2OOSSILVIA NAJERA BENCOMO 2856009176EA1/MX
Jul 28, 2025USI · Full2OOSSILVIA NAJERA BENCOMO 2856009176EA1/MX
Jun 27, 2025USI · Full4OOSSILVIA NAJERA BENCOMO 2856009176EA1/CI
May 19, 2025USI · Full3SILVIA NAJERA BENCOMO 2856009176EA1/MX
May 7, 2025NMII · Walk-around0SILVIA NAJERA BENCOMO 2856009176EA1/MX
Jan 28, 2025USIII · Driver-only0SILVIA NAJERA BENCOMO 2856009176EA1/MX
Sep 26, 2024NMIII · Driver-only0SILVIA NAJERA BENCOMO 2856009176EA1/CH
Jun 27, 2024USII · Walk-around1SILVIA NAJERA BENCOMO 2856009176EA1/MX
Dec 22, 2023NMII · Walk-around1SILVIA NAJERA BENCOMO 2856009176EA1/MX
03

Carriers this unit has run under

1 distinct carrier · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
SILVIA NAJERA BENCOMO2856009Dec 22, 2023Jul 28, 202614CI
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.
176EA1MX1SILVIA NAJERA BENCOMODec 22, 2023Jul 28, 202612
176EA1CISILVIA NAJERA BENCOMOJun 27, 2025Jun 27, 20251
176EA1CHSILVIA NAJERA BENCOMOSep 26, 2024Sep 26, 20241
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Jun 17, 2026