Equipment unit · VIN-decoded · NHTSA vPIC

2020 Kenworth T880

1NKZL49X6LJ413771 · Truck · INCOMPLETE VEHICLE
Carriers run under2
5 mo
Inspections4
all-time
OOS inspections2
of 4
First seenFeb 20, 2024
US
Last seenJul 29, 2024
NY
Inspected under 2 different carriers in 5 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
1NKZL49X6LJ413771
Make
Kenworth
Model
T880
Model year
2020
Body class
Truck
Vehicle type
INCOMPLETE VEHICLE
GVWR
Class 8: 33,001 lb and above (14,969 kg and above)
Decoded at
Jul 6, 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
6 · valid

Deterministic · position 9; calculated value 6.

Model year candidates
1990 or 2020

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

North American serial sequence
413771

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
2020

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 · Feb 20, 2024 – Jul 29, 2024

DateStateLevelViol.OOSCarrier (DOT)Plate
Jul 29, 2024NYI · Full2OOSROCKBOTTOM ROAD SERVICE INC 2486760AY871X/NJ
May 29, 2024CTIII · Driver-only5OOSROCKBOTTOM ROAD SERVICE TRISTATE INC 4188086AY871X/NJ
Apr 30, 2024NYII · Walk-around0ROCKBOTTOM ROAD SERVICE INC 248676085000PC/NY
Feb 20, 2024USI · Full1ROCKBOTTOM ROAD SERVICE INC 2486760AY871X/NJ
03

Carriers this unit has run under

2 distinct carriers · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
ROCKBOTTOM ROAD SERVICE INC2486760Feb 20, 2024Jul 29, 20243NY
ROCKBOTTOM ROAD SERVICE TRISTATE INC4188086May 29, 2024May 29, 20241NJ
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.
AY871XNJROCKBOTTOM ROAD SERVICE INCFeb 20, 2024Jul 29, 20242
AY871XNJROCKBOTTOM ROAD SERVICE TRISTATE INCMay 29, 2024May 29, 20241
85000PCNYROCKBOTTOM ROAD SERVICE INCApr 30, 2024Apr 30, 20241
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Jul 6, 2026