Equipment unit · VIN-decoded · NHTSA vPIC

2021 Kenworth T880

1XKZD49X4MJ448443 · Truck-Tractor · TRUCK
Carriers run under2
19 mo
Inspections6
all-time
OOS inspections0
of 6
First seenMar 22, 2024
OK
Last seenOct 24, 2025
TX
Inspected under 2 different carriers in 19 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
1XKZD49X4MJ448443
Make
Kenworth
Model
T880
Model year
2021
Body class
Truck-Tractor
Vehicle type
TRUCK
GVWR
Class 8: 33,001 lb and above (14,969 kg and above)
Decoded at
Jun 24, 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
1XK

Deterministic · VIN positions 1–3.

Vehicle descriptor section
ZD49X

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
448443

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 · 3,036 decoded VINs at 100.0% prefix purity.

Model
T880

Prefix basis · 3,036 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-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

  • model line
  • generation
  • cab type

These are withheld claims, not negative findings.

02

Inspection history

Every roadside inspection of this VIN, newest first · Mar 22, 2024 – Oct 24, 2025

DateStateLevelViol.OOSCarrier (DOT)Plate
Oct 24, 2025TXII · Walk-around0BARNHART CRANE AND RIGGING CO 536RPW527/OK
Aug 7, 2025OKI · Full2BARNHART CRANE AND RIGGING CO 536RPW527/OK
Mar 24, 2025OKII · Walk-around0ROCO OIL COMPANY INC 4260751NYS442/OK
Jul 11, 2024OKII · Walk-around2ROCO OIL COMPANY INC 4260751NYS442/OK
May 29, 2024OKIII · Driver-only1ROCO OIL COMPANY INC 4260751NYS442/OK
Mar 22, 2024OKII · Walk-around0ROCO OIL COMPANY INC 4260751NYS442/OK
03

Carriers this unit has run under

2 distinct carriers · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
BARNHART CRANE AND RIGGING CO536Aug 7, 2025Oct 24, 20252TN
ROCO OIL COMPANY INC426075Mar 22, 2024Mar 24, 20254OK
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.
RPW527OKBARNHART CRANE AND RIGGING COAug 7, 2025Oct 24, 20252
1NYS442OKROCO OIL COMPANY INCMar 22, 2024Mar 24, 20254
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Jun 24, 2026