Equipment unit · VIN-decoded · NHTSA vPIC

1999 Kenworth T800

1NKDLB9X1XR790451 · Truck · INCOMPLETE VEHICLE
Carriers run under1
9 mo
Inspections2
all-time
OOS inspections1
of 2
First seenSep 4, 2024
ND
Last seenJun 17, 2025
ND
01

Decoded identity

From the 17-character VIN via NHTSA vPIC

VIN
1NKDLB9X1XR790451
Make
Kenworth
Model
T800
Model year
1999
Body class
Truck
Vehicle type
INCOMPLETE VEHICLE
GVWR
Class 8: 33,001 lb and above (14,969 kg and above)
Decoded at
Aug 26, 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
DLB9X

Deterministic · VIN positions 4–8.

Check digit
1 · valid

Deterministic · position 9; calculated value 1.

Model year candidates
1999 or 2029

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

North American serial sequence
790451

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.

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 · Sep 4, 2024 – Jun 17, 2025

DateStateLevelViol.OOSCarrier (DOT)Plate
Jun 17, 2025NDII · Walk-around1—S AND K STACK TESTING INC 2266519SK4/ND
Sep 4, 2024NDI · Full3OOSS AND K STACK TESTING INC 2266519SK 4/ND
03

Carriers this unit has run under

1 distinct carrier · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
S AND K STACK TESTING INC2266519Sep 4, 2024Jun 17, 20252ND
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.
SK4ND—S AND K STACK TESTING INCJun 17, 2025 → Jun 17, 20251
SK 4ND—S AND K STACK TESTING INCSep 4, 2024 → Sep 4, 20241
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Aug 26, 2026