Equipment unit · VIN-decoded · NHTSA vPIC

2019 Western Star 4900

5KJJALD1XKPKD7948 · Truck-Tractor · TRUCK
Carriers run under1
36 mo
Inspections22
all-time
OOS inspections0
of 22
First seenJul 5, 2023
CA
Last seenJul 30, 2026
AZ
01

Decoded identity

From the 17-character VIN via NHTSA vPIC

VIN
5KJJALD1XKPKD7948
Make
Western Star
Model
4900
Model year
2019
Body class
Truck-Tractor
Vehicle type
TRUCK
GVWR
Class 8: 33,001 lb and above (14,969 kg and above)
Decoded at
Jun 14, 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
5KJ

Deterministic · VIN positions 1–3.

Vehicle descriptor section
JALD1

Deterministic · VIN positions 4–8.

Check digit
X · valid

Deterministic · position 9; calculated value X.

Model year candidates
1989 or 2019

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

North American serial sequence
KD7948

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
WESTERN STAR

Prefix basis · 68 decoded VINs at 100.0% prefix purity.

Model
4900

Prefix basis · 68 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
2019

Observed directly for this VIN via NHTSA vPIC.

Observed make
WESTERN STAR

Observed directly for this VIN via NHTSA vPIC.

Observed model
4900

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 · Jul 5, 2023 – Jul 30, 2026

DateStateLevelViol.OOSCarrier (DOT)Plate
Jul 30, 2026AZII · Walk-around0MONARCH HEAVY HAUL CORP 2943108ZP39475/CA
May 21, 2026AZIII · Driver-only0MONARCH HEAVY HAUL CORP 2943108ZP39475/CA
May 8, 2026CAI · Full0MONARCH HEAVY HAUL CORP 2943108ZP39475/CA
Apr 9, 2026AZIII · Driver-only0MONARCH HEAVY HAUL CORP 2943108ZP39475/CA
Mar 6, 2026AZIII · Driver-only0MONARCH HEAVY HAUL CORP 2943108ZP39475/CA
Jan 19, 2026CAII · Walk-around1MONARCH HEAVY HAUL CORP 2943108ZP39475/CA
Jan 13, 2026CAI · Full0MONARCH HEAVY HAUL CORP 2943108ZP39475/CA
Oct 21, 2025AZIII · Driver-only0MONARCH HEAVY HAUL CORP 2943108ZP39475/CA
Oct 16, 2025AZIII · Driver-only0MONARCH HEAVY HAUL CORP 2943108ZP39475/CA
Oct 13, 2025AZIII · Driver-only0MONARCH HEAVY HAUL CORP 2943108ZP39475/CA
Oct 10, 2025AZIII · Driver-only0MONARCH HEAVY HAUL CORP 2943108ZP39475/CA
Sep 12, 2025CAI · Full0MONARCH HEAVY HAUL CORP 2943108ZP39475/CA
Jul 27, 2025CAV · Vehicle-only0MONARCH HEAVY HAUL CORP 2943108ZP39475/CA
Feb 1, 2024AZIII · Driver-only0MONARCH HEAVY HAUL CORP 2943108XP42255/CA
Jan 10, 2024AZIII · Driver-only0MONARCH HEAVY HAUL CORP 2943108XP42255/CA
Jul 11, 2023AZIII · Driver-only0MONARCH HEAVY HAUL CORP 2943108XP42255/CA
Jul 10, 2023CAII · Walk-around0MONARCH HEAVY HAUL CORP 2943108XP42255/CA
Jul 10, 2023CAII · Walk-around0MONARCH HEAVY HAUL CORP 2943108XP42255/CA
Jul 7, 2023CAII · Walk-around0MONARCH HEAVY HAUL CORP 2943108XP42255/CA
Jul 7, 2023AZIII · Driver-only0MONARCH HEAVY HAUL CORP 2943108XP42255/CA
Jul 6, 2023CAII · Walk-around0MONARCH HEAVY HAUL CORP 2943108XP42255/CA
Jul 5, 2023CAI · Full0MONARCH HEAVY HAUL CORP 2943108XP42255/CA
03

Carriers this unit has run under

1 distinct carrier · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
MONARCH HEAVY HAUL CORP2943108Jul 5, 2023Jul 30, 202622CA
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.
ZP39475CA1MONARCH HEAVY HAUL CORPJul 27, 2025Jul 30, 202613
XP42255CAMONARCH HEAVY HAUL CORPJul 5, 2023Feb 1, 20249
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Jun 14, 2026