Equipment unit · VIN-decoded · NHTSA vPIC

2018 Isuzu NPR/NPR-HD

54DC4W1B4JS800306 · Incomplete - Chassis Cab (Single Cab) · INCOMPLETE VEHICLE
Carriers run under2
18 mo
Inspections4
all-time
OOS inspections1
of 4
First seenNov 5, 2024
MD
Last seenMay 11, 2026
DE
Inspected under 2 different carriers in 18 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
54DC4W1B4JS800306
Make
Isuzu
Model
NPR/NPR-HD
Model year
2018
Body class
Incomplete - Chassis Cab (Single Cab)
Vehicle type
INCOMPLETE VEHICLE
GVWR
Class 4: 14,001 - 16,000 lb (6,350 - 7,258 kg)
Decoded at
Jul 16, 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
54D

Deterministic · VIN positions 1–3.

Vehicle descriptor section
C4W1B

Deterministic · VIN positions 4–8.

Check digit
4 · valid

Deterministic · position 9; calculated value 4.

Model year candidates
1988 or 2018

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

North American serial sequence
800306

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.

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
2018

Observed directly for this VIN via NHTSA vPIC.

Observed make
ISUZU

Observed directly for this VIN via NHTSA vPIC.

Observed model
NPR/NPR-HD

Observed directly for this VIN via NHTSA vPIC.

Observed body class
Incomplete - Chassis Cab (Single Cab)

Observed directly for this VIN via NHTSA vPIC.

Observed vehicle type
INCOMPLETE VEHICLE

Observed directly for this VIN via NHTSA vPIC.

GVWR
Class 4: 14,001 - 16,000 lb (6,350 - 7,258 kg)

Observed directly for this VIN via NHTSA vPIC.

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 · Nov 5, 2024 – May 11, 2026

DateStateLevelViol.OOSCarrier (DOT)Plate
May 11, 2026DEIII · Driver-only0DIAMOND MATERIALS LLC 45597C137674/DE
Dec 2, 2025NJI · Full0DIAMOND MATERIALS LLC 45597C137674/DE
Oct 8, 2025NJI · Full2DIAMOND MATERIALS LLC 455972726432/IN
Nov 5, 2024MDII · Walk-around3OOSPENSKE TRUCK LEASING CO LP 3275742726432/IN
03

Carriers this unit has run under

2 distinct carriers · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
DIAMOND MATERIALS LLC45597Oct 8, 2025May 11, 20263DE
PENSKE TRUCK LEASING CO LP327574Nov 5, 2024Nov 5, 20241PA
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.
C137674DEDIAMOND MATERIALS LLCDec 2, 2025May 11, 20262
2726432INDIAMOND MATERIALS LLCOct 8, 2025Oct 8, 20251
2726432INPENSKE TRUCK LEASING CO LPNov 5, 2024Nov 5, 20241
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Jul 16, 2026