Equipment unit · VIN-decoded · NHTSA vPIC

2021 Kenworth T8 Series

3BKDL40X3MF458948 · Truck · INCOMPLETE VEHICLE
T800
Carriers run under2
24 mo
Inspections4
all-time
OOS inspections0
of 4
First seenDec 21, 2023
CA
Last seenDec 15, 2025
CA
Inspected under 2 different carriers in 24 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
3BKDL40X3MF458948
Make
Kenworth
Model
T8 Series
Model year
2021
Body class
Truck
Vehicle type
INCOMPLETE VEHICLE
GVWR
Class 8: 33,001 lb and above (14,969 kg and above)
Decoded at
Jul 12, 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
3BK

Deterministic · VIN positions 1–3.

Vehicle descriptor section
DL40X

Deterministic · VIN positions 4–8.

Check digit
3 · valid

Deterministic · position 9; calculated value 3.

Model year candidates
1991 or 2021

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

North American serial sequence
458948

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 · 182 decoded VINs at 91.8% prefix purity.

Model
T8 Series

Prefix basis · 182 decoded VINs at 91.8% prefix purity.

Model line
T800

Sourced label · prefix basis 182 decoded VINs at 91.8% prefix purity.

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
2021

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

Observed directly for this VIN via NHTSA vPIC.

Observed vehicle type
INCOMPLETE VEHICLE

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

  • generation
  • cab type

These are withheld claims, not negative findings.

02

Inspection history

Every roadside inspection of this VIN, newest first · Dec 21, 2023 – Dec 15, 2025

DateStateLevelViol.OOSCarrier (DOT)Plate
Dec 15, 2025CAII · Walk-around0NATION'S BEST- CALIFORNIA LLC 412191478323C3/CA
Nov 25, 2025CAIII · Driver-only0NATION'S BEST- CALIFORNIA LLC 412191478323C3/CA
Mar 20, 2024CAIII · Driver-only0CALAVERAS LUMBER CO INC 266689278323C3/CA
Dec 21, 2023CAIII · Driver-only0CALAVERAS LUMBER CO INC 266689278323C3/CA
03

Carriers this unit has run under

2 distinct carriers · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
NATION'S BEST- CALIFORNIA LLC4121914Nov 25, 2025Dec 15, 20252TX
CALAVERAS LUMBER CO INC2666892Dec 21, 2023Mar 20, 20242CA
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.
78323C3CANATION'S BEST- CALIFORNIA LLCNov 25, 2025Dec 15, 20252
78323C3CACALAVERAS LUMBER CO INCDec 21, 2023Mar 20, 20242
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Jul 12, 2026