Equipment unit · VIN-decoded · NHTSA vPIC

2021 Kenworth T680

1XKYDP9X8MJ437037 · Truck-Tractor · TRUCK
Carriers run under2
15 mo
Inspections6
all-time
OOS inspections2
of 6
First seenFeb 4, 2025
IN
Last seenMay 6, 2026
MO
Inspected under 2 different carriers in 15 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
1XKYDP9X8MJ437037
Make
Kenworth
Model
T680
Model year
2021
Body class
Truck-Tractor
Vehicle type
TRUCK
GVWR
Class 8: 33,001 lb and above (14,969 kg and above)
Decoded at
Jun 24, 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
1XK

Deterministic · VIN positions 1–3.

Vehicle descriptor section
YDP9X

Deterministic · VIN positions 4–8.

Check digit
8 · valid

Deterministic · position 9; calculated value 8.

Model year candidates
1991 or 2021

Position 10 repeats every 30 years; both candidates are retained and neither is silently selected.

North American serial sequence
437037

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 · 26,022 decoded VINs at 100.0% prefix purity.

Model
T680

Prefix basis · 26,022 decoded VINs at 100.0% prefix purity.

Model line
Not established

No sourced model-line label is established.

No source established for this field.

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
2021

Observed directly for this VIN via NHTSA vPIC.

Observed make
KENWORTH

Observed directly for this VIN via NHTSA vPIC.

Observed model
T680

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

  • model line
  • generation
  • cab type

These are withheld claims, not negative findings.

02

Inspection history

Every roadside inspection of this VIN, newest first · Feb 4, 2025 – May 6, 2026

DateStateLevelViol.OOSCarrier (DOT)Plate
May 6, 2026MOI · Full1OOSTIPTON HAY FARMS LLC 217189134KT9S/MO
Jan 7, 2026COIII · Driver-only5OOSTIPTON HAY FARMS LLC 21718912022/MO
Sep 23, 2025KYI · Full2TIPTON HAY FARMS LLC 217189134KT9S/MO
Apr 21, 2025FLII · Walk-around0HEARTLAND EXPRESS INC OF IOWA 134697DH4303/IA
Mar 25, 2025SDIII · Driver-only0TIPTON HAY FARMS LLC 2171891TEMP/MO
Feb 4, 2025INIII · Driver-only2TIPTON HAY FARMS LLC 2171891TEMP/MO
03

Carriers this unit has run under

2 distinct carriers · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
TIPTON HAY FARMS LLC2171891Feb 4, 2025May 6, 20265MO
HEARTLAND EXPRESS INC OF IOWA134697Apr 21, 2025Apr 21, 20251IA
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.
34KT9SMOTIPTON HAY FARMS LLCSep 23, 2025May 6, 20262
2022MOTIPTON HAY FARMS LLCJan 7, 2026Jan 7, 20261
DH4303IAHEARTLAND EXPRESS INC OF IOWAApr 21, 2025Apr 21, 20251
TEMPMOTIPTON HAY FARMS LLCFeb 4, 2025Mar 25, 20252
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Jun 24, 2026