VIN 3H4SA4424R3168456 — 2024 POLAR MFG. Heil Trailer International
USDOT 90792
Vehicle identity
| VIN | 3H4SA4424R3168456 |
| Model year | 2024 |
| Make | POLAR MFG. |
| Model | Heil Trailer International |
| Vehicle type | SEMI-TRAILER |
| License plate | TN 520591T (Tennessee) |
| Inspection window | 2024-10-03 to 2025-10-21 |
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 |
|---|---|---|---|
| 2025-10-21 | 3H4SA4424R3168456 | TN 520591T | USDOT 90792 |
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
3H4SA4424R3168456 is a 2024 POLAR MFG. Heil Trailer International. License plate on its inspection records: TN 520591T. 3 roadside inspections 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
2024 POLAR MFG. Heil Trailer International is the vehicle NHTSA’s VIN registry returns for 3H4SA4424R3168456. It is a trailer built by HEIL TRAILER INTERNATIONAL, LLC at the JUAREZ plant. Powertrain: running on not applicable, paired with a not applicable transmission.
Roadside inspection & out-of-service record
This specific vehicle appears in 3 FMCSA roadside inspections between 2024-10-03 and 2025-10-21. Across those inspections it was never placed out of service. Its most recent inspection (2025-10-21) was in Maryland, 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 90792 from 2024-10-03 to 2025-10-21 — 3 inspections, none out of service.
Full spec sheet (NHTSA vPIC decode)
| Make | HEIL TRAILER INTERNATIONAL |
| Model | Heil Trailer International |
| Model Year | 2024 |
| 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 | HEIL TRAILER INTERNATIONAL, LLC The legal manufacturer of record in NHTSA’s database. |
| Plant City | JUAREZ Where the chassis was assembled — useful for verifying the VIN against the build record. |
| Plant Country | MEXICO |
| 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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