Equipment unit · VIN-decoded · NHTSA vPIC

2022 Monroe Towmaster

4KNBF2325NL162073 · Trailer · TRAILER
Carriers run under1
22 mo
Inspections4
all-time
OOS inspections1
of 4
First seenFeb 21, 2024
NJ
Last seenDec 17, 2025
MD
01

Decoded identity

From the 17-character VIN via NHTSA vPIC

VIN
4KNBF2325NL162073
Make
Monroe Towmaster
Model
Monroe Towmaster
Model year
2022
Body class
Trailer
Vehicle type
TRAILER
GVWR
Not decoded
Decoded at
Jul 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
4KN

Deterministic · VIN positions 1–3.

Vehicle descriptor section
BF232

Deterministic · VIN positions 4–8.

Check digit
5 · valid

Deterministic · position 9; calculated value 5.

Model year candidates
1992 or 2022

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

North American serial sequence
162073

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
MONROE TOWMASTER

Prefix basis · 10 decoded VINs at 100.0% prefix purity.

Model
Monroe Towmaster

Prefix basis · 10 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
2022

Observed directly for this VIN via NHTSA vPIC.

Observed make
MONROE TOWMASTER

Observed directly for this VIN via NHTSA vPIC.

Observed model
Monroe Towmaster

Observed directly for this VIN via NHTSA vPIC.

Observed body class
Trailer

Observed directly for this VIN via NHTSA vPIC.

Observed vehicle type
TRAILER

Observed directly for this VIN via NHTSA vPIC.

GVWR
Not established

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 21, 2024 – Dec 17, 2025

DateStateLevelViol.OOSCarrier (DOT)Plate
Dec 17, 2025MDII · Walk-around0LEN THE PLUMBER 1094755365533X/MD
Aug 1, 2024MDI · Full0LEN THE PLUMBER 1094755365533X/MD
Jul 18, 2024DEI · Full1OOSLEN THE PLUMBER 1094755365533X/MD
Feb 21, 2024NJI · Full2LEN THE PLUMBER 1094755365533X/MD
03

Carriers this unit has run under

1 distinct carrier · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
LEN THE PLUMBER1094755Feb 21, 2024Dec 17, 20254MD
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.
365533XMDLEN THE PLUMBERFeb 21, 2024Dec 17, 20254
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Jul 14, 2026