VIN 4KNBF3027JL161821 — 2018 Monroe Towmaster (vPIC; filed make: UNKNOWN) Monroe Towmaster
USDOT 370233
Vehicle identity
| VIN | 4KNBF3027JL161821 |
| Model year | 2018 |
| Make | Monroe Towmaster (vPIC; filed make: UNKNOWN) |
| Model | Monroe Towmaster |
| Vehicle type | SEMI-TRAILER |
| License plate | WA 11048AJ (Washington) |
| Last inspected | 2026-09-23 |
Recorded vehicle, plate and carrier history
These are dated observations in the records available to us. They do not establish ownership, a sale, a transfer date, or continuous use between observations. The latest observation may not describe today’s vehicle or carrier.
| Observed dates | VIN | Plate | Reported carrier |
|---|---|---|---|
| 2026-09-23 | 4KNBF3027JL161821 | WA 11048AJ | USDOT 370233 |
Evidence: FMCSA inspection observations and retained snapshots of our vehicle records. Coverage is incomplete; an unreported change cannot be dated from these records.
What this means
4KNBF3027JL161821 is a 2018 Monroe Towmaster. License plate on its inspection records: WA 11048AJ. 1 roadside inspection on FMCSA record. No out-of-service violations are recorded for this VIN in the available inspection records. Other violations may still be present.
What this VIN is
2018 Monroe Towmaster is the vehicle NHTSA’s VIN registry returns for 4KNBF3027JL161821. It is a trailer built by MONROE TOWMASTER, LLC at the LITCHFIELD, MINNESOTA plant.
Roadside inspection & out-of-service record
This specific vehicle appears in 1 FMCSA roadside inspection (most recent activity 2026-09-23). Across those inspections it was never placed out of service. Its most recent inspection (2026-09-23) was in Washington, a Level II — walk-around inspection of the driver and the vehicle. No violations were recorded against this vehicle in our inspection window.
Operator history
Operated by USDOT 370233 on 2026-09-23 — 1 inspection, none out of service.
Full spec sheet (NHTSA vPIC decode)
| Make | MONROE TOWMASTER |
| Model | Monroe Towmaster |
| Model Year | 2018 |
| Vehicle Type | TRAILER NHTSA’s top-level vehicle category derived from the VIN. |
| Body Class | Trailer The body style NHTSA assigns from the VIN — e.g. truck-tractor, straight truck, or cutaway. |
| Manufacturer | MONROE TOWMASTER, LLC The legal manufacturer of record in NHTSA’s database. |
| Plant City | LITCHFIELD Where the chassis was assembled — useful for verifying the VIN against the build record. |
| Plant State | MINNESOTA |
| Plant Country | UNITED STATES (USA) |
| Axles | 2 Number of axles — ties directly to weight limits and toll/registration class. |
Operator & inspection history
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Frequently Asked Questions
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