Equipment unit · VIN-decoded · NHTSA vPIC

2018 Monroe Towmaster

4KNBF3435JL163053 · Trailer · TRAILER
Carriers run under1
27 mo
Inspections4
all-time
OOS inspections0
of 4
First seenMay 17, 2024
WI
Last seenAug 25, 2026
MN
01

Decoded identity

From the 17-character VIN via NHTSA vPIC

VIN
4KNBF3435JL163053
Make
Monroe Towmaster
Model
Monroe Towmaster
Model year
2018
Body class
Trailer
Vehicle type
TRAILER
GVWR
Not decoded
Decoded at
Aug 9, 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
BF343

Deterministic · VIN positions 4–8.

Check digit
5 · valid

Deterministic · position 9; calculated value 5.

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
163053

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
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

  • 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 · May 17, 2024 – Aug 25, 2026

DateStateLevelViol.OOSCarrier (DOT)Plate
Aug 25, 2026MNIII · Driver-only1CASPER CONSTRUCTION 10539673034STU/MN
Jul 18, 2025MNIII · Driver-only0CASPER CONSTRUCTION 10539673034STU/MN
Aug 14, 2024MIIII · Driver-only1CASPER CONSTRUCTION 10539673034STU/MN
May 17, 2024WIII · Walk-around1CASPER CONSTRUCTION 10539673034STU/MN
03

Carriers this unit has run under

1 distinct carrier · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
CASPER CONSTRUCTION1053967May 17, 2024Aug 25, 20264MN
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.
3034STUMN2CASPER CONSTRUCTIONMay 17, 2024Aug 25, 20264
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Aug 9, 2026