Equipment unit · VIN-decoded · NHTSA vPIC

2018 Kenworth T8 Series

3WKDDP0X3JF871121 · Truck-Tractor · TRUCK
T800
Carriers run under2
27 mo
Inspections14
all-time
OOS inspections1
of 14
First seenJun 29, 2023
TX
Last seenSep 12, 2025
US
Inspected under 2 different carriers in 27 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.
01

Decoded identity

From the 17-character VIN via NHTSA vPIC

VIN
3WKDDP0X3JF871121
Make
Kenworth
Model
T8 Series
Model year
2018
Body class
Truck-Tractor
Vehicle type
TRUCK
GVWR
Class 8: 33,001 lb and above (14,969 kg and above)
Decoded at
Jun 28, 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
3WK

Deterministic · VIN positions 1–3.

Vehicle descriptor section
DDP0X

Deterministic · VIN positions 4–8.

Check digit
3 · valid

Deterministic · position 9; calculated value 3.

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
871121

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.

Make
KENWORTH

Prefix basis · 77 decoded VINs at 100.0% prefix purity.

Model
T8 Series

Prefix basis · 77 decoded VINs at 100.0% prefix purity.

Model line
T800

Sourced label · prefix basis 77 decoded VINs at 100.0% prefix purity.

Generation
Not established

No sourced generation label is established.

No source established for this field.

Cab type
Not established

No sourced cab label is established.

No source established for this field.

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
KENWORTH

Observed directly for this VIN via NHTSA vPIC.

Observed model
T8 Series

Observed directly for this VIN via NHTSA vPIC.

Observed body class
Truck-Tractor

Observed directly for this VIN via NHTSA vPIC.

Observed vehicle type
TRUCK

Observed directly for this VIN via NHTSA vPIC.

GVWR
Class 8: 33,001 lb and above (14,969 kg and above)

Observed directly for this VIN via NHTSA vPIC.

Not established

  • generation
  • cab type

These are withheld claims, not negative findings.

02

Inspection history

Every roadside inspection of this VIN, newest first · Jun 29, 2023 – Sep 12, 2025

DateStateLevelViol.OOSCarrier (DOT)Plate
Sep 12, 2025USI · Full1PETROLIFICOS DE MONTERREY SA DE CV 391046478AS9K/MX
Aug 26, 2025TXII · Walk-around4PETROLIFICOS DE MONTERREY SA DE CV 391046478AS9K/MX
Nov 4, 2024TXII · Walk-around2PETROLIFICOS DE MONTERREY SA DE CV 391046478AS9K/MX
Oct 7, 2024USIII · Driver-only0PETROLIFICOS DE MONTERREY SA DE CV 391046478AS9K/MX
Sep 11, 2024USI · Full5PETROLIFICOS DE MONTERREY SA DE CV 391046478AS9K/MX
May 1, 2024USI · Full3PETROLIFICOS DE MONTERREY SA DE CV 391046478AS9K/MX
Apr 11, 2024TXI · Full7PETROLIFICOS DE MONTERREY SA DE CV 391046478AS9K/MX
Mar 15, 2024TXIII · Driver-only3PETROLIFICOS DE MONTERREY SA DE CV 391046478AS9K/MX
Jan 3, 2024TXI · Full1OOSJORGE LUIS TORRES ALVAREZ 369337478AS9K/MX
Dec 22, 2023TXIII · Driver-only0JORGE LUIS TORRES ALVAREZ 369337478AS9K/MX
Dec 20, 2023TXII · Walk-around2JORGE LUIS TORRES ALVAREZ 369337478AS9K/MX
Nov 22, 2023TXII · Walk-around0JORGE LUIS TORRES ALVAREZ 369337478AS9K/MX
Oct 24, 2023TXI · Full6JORGE LUIS TORRES ALVAREZ 369337478AS9K/MX
Jun 29, 2023TXI · Full7JORGE LUIS TORRES ALVAREZ 369337478AS9K/MX
03

Carriers this unit has run under

2 distinct carriers · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
PETROLIFICOS DE MONTERREY SA DE CV3910464Mar 15, 2024Sep 12, 20258TA
JORGE LUIS TORRES ALVAREZ3693374Jun 29, 2023Jan 3, 20246TA
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.
78AS9KMX1PETROLIFICOS DE MONTERREY SA DE CVMar 15, 2024Sep 12, 20258
78AS9KMXJORGE LUIS TORRES ALVAREZJun 29, 2023Jan 3, 20246
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Jun 28, 2026