Equipment unit · VIN-decoded · NHTSA vPIC

2021 Ford F-550

1FDUF5HT6MDA04379 · Incomplete - Chassis Cab (Single Cab) · INCOMPLETE VEHICLE

Carriers run under2

26 mo

Inspections3

all-time

OOS inspections0

of 3

First seen07/06/2023

Last seen09/17/2025

Inspected under 2 different carriers in 26 months

A unit that bounces between many operators can indicate slip-seating, heavy sub-haul, or double-brokering. Review the carrier timeline below for load integrity — context for human judgment, not a verdict.

Decoded identity

From the 17-character VIN via NHTSA vPIC

VIN: 1FDUF5HT6MDA04379
Make: Ford
Model: F-550
Model year: 2021
Body class: Incomplete - Chassis Cab (Single Cab)
Vehicle type: INCOMPLETE VEHICLE
GVWR: Class 5: 16,001 - 19,500 lb (7,258 - 8,845 kg)
Decoded at: 07/19/2026

vPIC returns make / model / year / body class / GVWR. Fields it does not resolve are shown as Not decoded rather than guessed.

Inspection history

Every roadside inspection of this VIN, newest first · 07/06/2023 – 09/17/2025

Date	State	Level	Viol.	OOS	Carrier (DOT)	Plate
09/17/2025	CA	II · Walk-around	2	—	POLYTECH INDUSTRIAL INC 2746106	17712B4/CA
09/08/2025	CA	I · Full	0	—	POLYTECH INDUSTRIAL INC 2746106	17712B4/CA
07/06/2023	CA	I · Full	0	—	MAIN ELECTRIC SUPPLY COMPANY LLC 2741609	93750A3/CA

Carriers this unit has run under

2 distinct carriers · grouped by DOT · newest activity first

Carrier	DOT	First seen	Last seen	Insp.	State
POLYTECH INDUSTRIAL INC	2746106	09/08/2025	09/17/2025	2	CA
MAIN ELECTRIC SUPPLY COMPANY LLC	2741609	07/06/2023	07/06/2023	1	CA

Names are left-joined from the FMCSA census; a DOT with no census match falls back to its number.

Plate & unit-number history

The same truck under different plate registrations across carriers

Plate	State / prov.	Unit no.	Carrier	Date range	Insp.
17712B4	CA	—	POLYTECH INDUSTRIAL INC	09/08/2025 → 09/17/2025	2
93750A3	CA	—	MAIN ELECTRIC SUPPLY COMPANY LLC	07/06/2023 → 07/06/2023	1

Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded 07/19/2026