Equipment unit · VIN-decoded · NHTSA vPIC

2021 Kenworth T880

1NKZL49X4MJ443112 · Truck · INCOMPLETE VEHICLE
Carriers run under1
22 mo
Inspections7
all-time
OOS inspections0
of 7
First seenDec 14, 2023
CO
Last seenOct 21, 2025
CO
01

Decoded identity

From the 17-character VIN via NHTSA vPIC

VIN
1NKZL49X4MJ443112
Make
Kenworth
Model
T880
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
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
1NK

Deterministic · VIN positions 1–3.

Vehicle descriptor section
ZL49X

Deterministic · VIN positions 4–8.

Check digit
4 · valid

Deterministic · position 9; calculated value 4.

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
443112

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 · 181 decoded VINs at 100.0% prefix purity.

Model
T880

Prefix basis · 181 decoded VINs at 100.0% prefix purity.

Model line
Not established

No sourced model-line label is established.

No source established for this field.

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
T880

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

  • model line
  • generation
  • cab type

These are withheld claims, not negative findings.

02

Inspection history

Every roadside inspection of this VIN, newest first · Dec 14, 2023 – Oct 21, 2025

DateStateLevelViol.OOSCarrier (DOT)Plate
Oct 21, 2025COII · Walk-around0BUILDERS WAREHOUSE INC 685818195891/KS
Mar 25, 2025COIII · Driver-only0BUILDERS WAREHOUSE INC 685818195891/CO
Dec 31, 2024COIII · Driver-only1BUILDERS WAREHOUSE INC 685818195891/KS
Dec 23, 2024COIII · Driver-only0BUILDERS WAREHOUSE INC 685818195891/KS
May 13, 2024COII · Walk-around0BUILDERS WAREHOUSE INC 685818195891/KS
Mar 6, 2024COII · Walk-around0BUILDERS WAREHOUSE INC 685818195891/KS
Dec 14, 2023COII · Walk-around0BUILDERS WAREHOUSE INC 685818195891/KS
03

Carriers this unit has run under

1 distinct carrier · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
BUILDERS WAREHOUSE INC685818Dec 14, 2023Oct 21, 20257NE
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.
195891KSBUILDERS WAREHOUSE INCDec 14, 2023Oct 21, 20256
195891COBUILDERS WAREHOUSE INCMar 25, 2025Mar 25, 20251
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Jun 21, 2026