VIN 1NPFLB9X5WD444921 — 1998 Peterbilt 378
Recorded with Skagit Dirt Works Llc · USDOT 3546742
Vehicle identity
| VIN | 1NPFLB9X5WD444921 |
| Model year | 1998 |
| Make | Peterbilt |
| Model | 378 |
| Vehicle type | STRAIGHT TRUCK |
| License plate | WA D60143A (Washington) |
| Last inspected | 2025-08-26 |
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 |
|---|---|---|---|
| 2025-08-26 | 1NPFLB9X5WD444921 | WA D60143A | SKAGIT DIRT WORKS LLC · USDOT 3546742 |
Evidence: FMCSA inspection observations and retained snapshots of our vehicle records. Coverage is incomplete; an unreported change cannot be dated from these records.
Most recently recorded carrier for this vehicle
Skagit Dirt Works Llc Active
- USDOT
- 3546742
- MC
- —
- Status
- Active
- Type
- Motor Carrier
- Based in
- Mount Vernon, WA
- Power units
- 3
- Drivers
- 5
- Inspections (24 mo)
- 3
- Crashes (24 mo)
- 0
- Vehicle OOS rate
- 50%
Carrier recorded at the latest inspection in the available records (2025-08-26). This does not establish current ownership or confirm that the carrier still operates this vehicle.
View full carrier profile →Authority, insurance & bonds, safety scores, crash history, inspections and the full fleet list.What this means
1NPFLB9X5WD444921 is a 1998 Peterbilt 378 operated by Skagit Dirt Works Llc (USDOT 3546742). License plate on its inspection records: WA D60143A. 1 roadside inspection on FMCSA record. 1 out-of-service result on record.
What this VIN is
1998 Peterbilt 378 is the vehicle NHTSA’s VIN registry returns for 1NPFLB9X5WD444921. It is a truck built by PETERBILT MOTORS COMPANY at the DENTON, TEXAS plant. Powertrain: 3406/C15/C16 engine. Its gross vehicle weight rating (Class 8: 33,001 lb and above (14,969 kg and above)) places it in Class 8 heavy-duty (33,001 lb GVWR and above) — the line-haul tractor / heavy straight-truck tier.
Roadside inspection & out-of-service record
This specific vehicle appears in 1 FMCSA roadside inspection (most recent activity 2025-08-26). Its records show 1 out-of-service violation across 1 inspection. Out-of-service breakdown: 1 vehicle. Its most recent inspection (2025-08-26) was in Washington, a Level I — full inspection of the driver and the vehicle. Of 6 recorded violations, the most come from Vehicle Maintenance (6). Vehicle Maintenance covers brakes, lights, tires, load securement and other mechanical condition items.
Operator history
Operated by Skagit Dirt Works Llc (USDOT 3546742) on 2025-08-26 — 1 inspection, 1 out-of-service.
Full spec sheet (NHTSA vPIC decode)
| Make | PETERBILT |
| Model | 378 |
| Model Year | 1998 |
| Vehicle Type | INCOMPLETE VEHICLE NHTSA’s top-level vehicle category derived from the VIN. |
| Body Class | Truck The body style NHTSA assigns from the VIN — e.g. truck-tractor, straight truck, or cutaway. |
| G V W R | Class 8: 33,001 lb and above (14,969 kg and above) Class 8 heavy-duty (33,001 lb GVWR and above) — the line-haul tractor / heavy straight-truck tier |
| Manufacturer | PETERBILT MOTORS COMPANY The legal manufacturer of record in NHTSA’s database. |
| Plant City | DENTON Where the chassis was assembled — useful for verifying the VIN against the build record. |
| Plant State | TEXAS |
| Plant Country | UNITED STATES (USA) |
| Engine Model | 3406/C15/C16 The engine family installed at the factory — a major driver of resale value and parts availability. |
| Brake System Type | Air Air vs hydraulic brakes — air brakes are standard on heavy trucks and require an endorsement. |
| Drive Type | 6x4 Axle drive configuration (e.g. 6x4), which affects traction and fuel economy. |
FMCSA BASIC safety category breakdown
| BASIC Category | Violations | Status |
|---|---|---|
| Vehicle Maintenance | 6 | ⚠ High |
| Unsafe Driving | 0 | ✓ Clean |
| Driver Fitness | 0 | ✓ Clean |
| Fatigued Driving (HOS) | 0 | ✓ Clean |
| Controlled Substances | 0 | ✓ Clean |
| Hazmat | 0 | ✓ Clean |
Operator & inspection history
Related vehicles
- 1GBE4C1276F422367 Chevrolet (2 insp)
- 5R8BC2433RM110555 MAXEY MFG. (2 insp)
- 1GC4KVEY8SF186183 Chevrolet (1 insp)
- 1NPFLBEX07D669481 Peterbilt (1 insp)
Related
Frequently Asked Questions
What does VIN 1NPFLB9X5WD444921 decode to?
Why was 1998 Peterbilt 378 VIN 1NPFLB9X5WD444921 placed out of service?
What license plate is on VIN 1NPFLB9X5WD444921?
Vetting a used truck purchase?
Tell us what you're looking for and we'll send matching new or used trucks — no obligation.