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.

Source · 49 CFR Part 565 ↗
Vehicle descriptor section
C4W1B

Deterministic · VIN positions 4–8.

Source · 49 CFR Part 565 ↗
Check digit
4 · valid

Deterministic · position 9; calculated value 4.

Source · 49 CFR Part 565 ↗
Model year candidates
1988 or 2018

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

Source · 49 CFR Part 565 ↗
North American serial sequence
800306

Deterministic · positions 12–17 for a North American WMI.

Source · 49 CFR Part 565 ↗

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 · Nov 5, 2024 – May 11, 2026

DateStateLevelViol.OOSCarrier (DOT)Plate
May 11, 2026DEIII · Driver-only0—DIAMOND MATERIALS LLC 45597C137674/DE
Dec 2, 2025NJI · Full0—DIAMOND MATERIALS LLC 45597C137674/DE
Oct 8, 2025NJI · Full2—DIAMOND 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.
C137674DE—DIAMOND MATERIALS LLCDec 2, 2025 → May 11, 20262
2726432IN—DIAMOND MATERIALS LLCOct 8, 2025 → Oct 8, 20251
2726432IN—PENSKE TRUCK LEASING CO LPNov 5, 2024 → Nov 5, 20241
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Jul 16, 2026