Kenworth VIN Number Lookup — Free Class 8 Decode With Title Brands, Liens, and Recalls.
Every Kenworth — from a T680 aero sleeper to a W900 long-hood icon — wears a 17-character VIN that decodes the PACCAR drivetrain, GVWR class, cab configuration, and Chillicothe or Renton build plant. A Kenworth VIN number lookup translates that string into spec, then layers on the records commercial buyers actually need: NMVTIS title brands, open liens and UCC filings, odometer or ECM hours, and open NHTSA recalls. Drop the VIN below for a free instant decode. "The World's Best" trucks change hands fast and cross state lines — the VIN is your first defense.
Free Kenworth VIN Lookup — Decode Any Kenworth VIN
Enter the 17-character Kenworth VIN and we'll surface the engine family, GVWR class, cab config, plant, plus title brands, liens, and open recalls — instantly.
Free · No sign-up · Instant Kenworth decode
Quick Answer
- How do I do a Kenworth VIN number lookup?
- Find the 17-character VIN on your Kenworth's driver-door jamb FMVSS label, frame rail, or title, then paste it into the free CarCheckerVIN lookup on this page — it decodes the engine family, GVWR class, cab config, model, and plant, then checks NMVTIS title brands, liens, and open NHTSA recalls in seconds, with no sign-up.
- What do Kenworth VINs start with?
- US-built Kenworth trucks carry the World Manufacturer Identifier 1XK or 1NK in the first three characters — the PACCAR heavy-truck codes shared across the T680, W900, T880, and W990 lines.
- Does a Kenworth VIN show the exact spec?
- It decodes the GVWR class, engine family, cab configuration, and axle config, but the detailed build spec lives on the PACCAR spec sheet and the door-jamb FMVSS label. Glider kits can break VIN-to-drivetrain matching, so used buyers should always confirm against the spec sheet.
What a Kenworth VIN Reveals
A Class 8 VIN decodes further than most buyers expect — but not all the way to a full build sheet. Here is what a Kenworth VIN number lookup returns, and where the honest limits are. For the general heavy-truck primer that applies across every Class 8 builder, see our semi truck VIN lookup guide.
Engine family + GVWR class
The descriptor section decodes the engine family — PACCAR MX-13, PACCAR MX-11, or Cummins X15 — and the GVWR class. Class 8 means a gross vehicle weight rating of 33,001 lbs and up, which covers every on-highway and vocational Kenworth tractor.
Transmission + axle config
The VIN and spec data identify the transmission family — Eaton Fuller manual, Eaton UltraShift PLUS, or PACCAR TX-12/TX-18 automated — and the axle configuration (6x4 tandem, 4x2, or heavy-haul multi-axle) that separates a linehaul tractor from a vocational chassis.
Cab configuration
Day cab versus sleeper, and which sleeper: the 40-inch, 52-inch, or 76-inch AeroCab on a T680, or the classic integral sleeper on a W900. Cab config is a major valuation driver on the used market and is encoded in the vehicle-descriptor section.
Model / series
T680 aero flagship, W900 long-hood classic, W990 modern long-hood, T880 vocational and heavy-haul, legacy T800, the battery-electric T680E, T380/T480 medium-duty, or the K370 cabover — the VIN and spec data pin the exact Kenworth model line.
Assembly plant
Position 11 identifies the plant: Chillicothe, Ohio; Renton, Washington; or the legacy Sainte-Thérèse, Quebec line. Handy when a recall or a build-date campaign is plant-specific.
Model year + sequence
Position 10 is the model-year character, and the trailing digits are the production sequence — a unique serial for that individual truck, useful for matching the frame stamping to the door label.
Decoding a Kenworth VIN — WMI, Plant, and Year
Kenworth's 17-character VIN follows the same ISO 3779 standard as any road vehicle, but its PACCAR WMI prefixes and plant codes are worth knowing on their own. Here's how a Kenworth VIN number lookup parses the string.
The first three characters are the World Manufacturer Identifier (WMI). US-built Kenworth trucks use 1XK and 1NK — the PACCAR heavy-truck codes. Kenworth is the sister brand to Peterbilt under PACCAR, which is why the two share drivetrain families and spec systems even though the VIN prefixes differ.
Positions 4 through 8 are the Vehicle Descriptor Section — model line, cab type, engine family, GVWR class, and axle configuration. The 9th character is the check digit. The 10th character is the model year, and the 11th is the assembly plant code.
The 11th-character plant code points to Chillicothe, Ohio (the highest-volume Kenworth line), Renton, Washington, or the legacy Sainte-Thérèse, Quebec facility. The final six characters are the production sequence — every Kenworth gets a unique trailing serial that should match the frame-rail stamping and the door-jamb label.
Kenworth VIN at a glance
- WMI (positions 1–3)
1XK / 1NK - Descriptor
Positions 4–8 - Model year
Position 10 - Plant code
Position 11
One 17-character Kenworth VIN decodes the drivetrain class and plant — but the full build spec lives on the PACCAR spec sheet. Run the free decode in seconds, no account.
Why a Class 8 VIN Only Decodes So Far
Here's the honest part most decoders won't tell you. A Kenworth's 17-character VIN decodes the GVWR class, cab configuration, engine family, and axle config — enough to confirm the truck matches the listing. But the detailed build spec — exact rear-axle ratio, wheelbase, fifth-wheel setup, APU, and every option — lives on the PACCAR spec/data sheet and the driver-door FMVSS label, not in the VIN itself.
This matters most on glider kits. A glider is a new Kenworth cab and chassis fitted with a remanufactured (often older) engine and transmission, which breaks the clean VIN-to-drivetrain match a decoder assumes. If you're buying used and the VIN decodes a modern engine family but the truck has an older powerplant, you may be looking at a glider — verify the drivetrain against the physical engine tag and the spec sheet before you buy.
New to heavy-truck VINs? Start with the general semi truck VIN lookup guide, which covers how a Class 8 VIN works across every builder before you drill into Kenworth specifics.
Where to Find the VIN on a Kenworth
A Kenworth carries its VIN in more places than a passenger vehicle because the cab and chassis are often built and titled separately. Check these five spots — and make sure they all agree.
Driver-door jamb (FMVSS label)
Open the driver's door and read the federal FMVSS certification label on the jamb. It lists the VIN, GVWR, and axle ratings — the most reliable copy on the truck.
Frame rail stamping
Stamped into the steel of the frame rail near the front, on the passenger side. This is the 'true' chassis number — trust it if a label looks tampered with or re-riveted.
Dash by the windshield
On newer Kenworths the VIN plate is visible through the windshield at the base of the dash, the same as a car's cowl VIN.
Title document
The state-issued title prints the VIN at the top. On a private-party Kenworth purchase, match this against the frame stamping and the door label before you pay.
IRP / apportioned cab card
Interstate tractors carry an IRP apportioned cab card that lists the VIN. Confirm it matches the truck and the title, especially on an auction or fleet-retired unit.
Found the VIN? Paste it into the form above and run a free Kenworth VIN number lookup against NMVTIS, the NHTSA recall feed, and the PACCAR spec data.
Look Up This Specific Kenworth VIN Now
Decoded drivetrain class, cab config, and plant, plus title brands, liens, and open recalls — instantly. Free, no sign-up, no card required.
Free Kenworth Decode vs. a Full History Report
A free Kenworth VIN number lookup returns the decode and a title-brand summary — but it is not a full history report. On a six-figure Class 8 tractor, the records that protect you are the ones a commercial buyer relies on: NMVTIS title brands, open liens and UCC filings, and odometer or ECM hours, not marketing spec. NMVTIS is the federal title aggregator that pulls from state DMVs, insurers, and salvage auctions.
Our full Kenworth history report is $14.99 — versus Carfax at $44.99 for often-thin Class 8 coverage. Consumer history services are built around passenger cars; heavy-truck buyers lean on title, lien, and odometer records instead, which is exactly what our report centers on. CarCheckerVIN is an independent service and is not affiliated with Kenworth or PACCAR.
Buying a fleet of tractors? See our fleet check for batch VIN verification across a whole roster.
Common Kenworth Recalls a VIN Lookup Surfaces
Class 8 trucks are subject to NHTSA safety recalls just like cars, and a Kenworth VIN number lookup queries the live NHTSA feed to surface any open campaign attached to the VIN. These are the categories that most often hit heavy trucks.
Steering components
Heavy-truck steering recalls cover drag-link, steering-shaft, and gear-box fasteners that can loosen or separate. A VIN lookup confirms whether a Kenworth is within an affected build range and whether the fix has been completed at a PACCAR dealer.
Brake / ABS systems
Air-brake and ABS-module campaigns address valve, sensor, and wiring faults that can extend stopping distance on a loaded Class 8 tractor. Open brake recalls remain attached to the VIN until the dealer repair is done — free of charge.
Fuel system
Fuel-line, tank-strap, and fuel-heater recalls target leak and fire risk on diesel Kenworths. A VIN lookup against the NHTSA feed flags any open fuel-system campaign so you can schedule the fix before it's a roadside problem.
Wiring / electrical
Chassis-harness and connector recalls address chafing and corrosion that can cause shorts or loss of critical functions. These are common on high-mileage tractors and surface directly from the VIN.
Lighting
Headlamp, marker-light, and trailer-connector recalls cover visibility and conspicuity failures that put a Class 8 truck out of DOT compliance. A VIN lookup shows any open lighting campaign attached to the unit.
Kenworth Model Decode Quirks
Most Kenworth VINs decode cleanly, but the range spans classic long-hoods, modern aero tractors, vocational chassis, and battery-electric trucks — and each carries decode nuances a Kenworth VIN number lookup should handle.
W900 / W990 long-hood classics
The W900 is the long-hood icon that made Kenworth's reputation; the W990 is its modern successor. Both share the heavy on-highway drivetrain families with the aero T680 but differ sharply in cab and hood configuration — a proper decode distinguishes the long-hood series from the aero flagship rather than lumping them together.
T880 / T800 vocational builds
The T880 is Kenworth's vocational and heavy-haul workhorse, replacing the legacy T800. These chassis carry multi-axle and lift-axle configurations, PTO provisions, and heavier GVWR ratings that separate a dump or mixer truck from a linehaul tractor in the descriptor section.
T680E electric + medium-duty
The T680E is Kenworth's battery-electric Class 8 tractor, and the T380/T480 and K370 cabover cover medium-duty and vocational niches. Electric and medium-duty VINs decode a different powertrain family than the diesel MX-13 flagships — a decode that assumes diesel will misread them, so confirm the engine family against the spec sheet.
Related Truck + VIN Checks That Build On Your Lookup
A Kenworth VIN number lookup is the entry point. These focused checks add sister-brand coverage, title depth, and full-history data when you want to be thorough on a Class 8 purchase.
Always check the VIN before you buy
Our free report reveals accidents, title brands, odometer rollback, theft records, and open recalls in seconds.
Kenworth VIN Number Lookup — Frequently Asked Questions
The questions Kenworth and Class 8 buyers ask most when they run a VIN for the first time.
How do I do a Kenworth VIN number lookup?+
Find the 17-character VIN on your Kenworth — the most reliable spots are the driver-door jamb FMVSS label, the frame rail stamped near the front passenger-side axle, the dash by the windshield, the title, or the IRP cab card. Then paste it into the Kenworth VIN number lookup form on this page. The tool validates that the VIN is exactly 17 characters with no I, O, or Q, then decodes the engine family, GVWR class, cab config, model, and plant, and queries the NHTSA recall feed and NMVTIS title records in parallel. You'll see the decode, any open recalls, and any title-brand or lien history in seconds. No account required, no credit card.
What do Kenworth VINs start with?+
US-built Kenworth trucks carry the World Manufacturer Identifier 1XK or 1NK in the first three characters. These are the PACCAR heavy-truck codes, shared across the T680, W900, W990, T880, and T800 lines. Kenworth is the sister brand to Peterbilt under PACCAR, so the two share engine and transmission families even though their VIN prefixes differ (Peterbilt uses 1XP and 2NP). If a Kenworth VIN doesn't start with 1XK or 1NK, confirm it wasn't retyped from the title incorrectly before you decode it.
Is the Kenworth VIN lookup free?+
Yes. The basic Kenworth VIN number lookup on this page is free, with no sign-up and no credit card. You enter the 17-character VIN and we return the decoded drivetrain class, cab config, model, and plant, plus a title-brand summary and any open NHTSA recalls right away. NMVTIS and NHTSA data are accessible through approved providers, which is why the consumer-relevant fields are free. A full history report with every lien, odometer or ECM-hours reading, and complete title chain is the paid step at $14.99 — a fraction of Carfax's $44.99, which carries often-thin Class 8 coverage.
Where is the VIN on a Kenworth T680 or W900?+
Every modern Kenworth prints the VIN in at least five places. The most reliable is the driver-door jamb FMVSS certification label, which also lists the GVWR and axle ratings. The second is stamped into the frame rail near the front on the passenger side — the 'true' chassis number that survives a label swap. The third is the dash by the windshield on newer trucks. The fourth and fifth are the title document and the IRP apportioned cab card. On a used T680 or W900, match all copies: a frame stamping that disagrees with the door label or the title is a stop-the-deal red flag.
Does a Kenworth VIN show the engine and full spec?+
A Kenworth VIN decodes the engine family — PACCAR MX-13, PACCAR MX-11, or Cummins X15 — along with the GVWR class, cab configuration, and axle config. That's enough to confirm the truck matches the listing. But the detailed build spec — exact rear-axle ratio, wheelbase, fifth-wheel setup, transmission model, and every option — lives on the PACCAR spec/data sheet and the door-jamb FMVSS label, not in the 17-character VIN itself. Glider kits complicate this further: a glider pairs a new Kenworth cab and chassis with a remanufactured older engine, so the decoded engine family may not match what's physically installed. Always verify the drivetrain against the spec sheet and the engine tag on a used purchase.
How do I check a Kenworth for open recalls?+
Run the VIN through the Kenworth VIN number lookup on this page. The tool queries the live NHTSA recall feed for any open safety campaign attached to the VIN — steering components, brake and ABS systems, fuel system, chassis wiring, and lighting are the categories that most often hit Class 8 trucks. Open recalls stay attached to the VIN until the work is completed at a PACCAR dealer, and recall repairs are free regardless of the truck's age or ownership. If a recall shows open, call any Kenworth or PACCAR dealer service department and schedule the fix at no charge.
Why is a Kenworth history report cheaper than Carfax?+
Our full Kenworth history report is $14.99 versus Carfax's $44.99, and the difference comes down to focus. Consumer history services like Carfax are built around passenger cars and often carry thin coverage on Class 8 commercial trucks. Heavy-truck buyers don't lean on the same records a car buyer does — they rely on NMVTIS title brands, open liens and UCC filings, and odometer or ECM-hours readings to protect a six-figure purchase. Our report centers on exactly those commercial-buyer records through NMVTIS-licensed data, which is why we can price it lower and still cover what matters. CarCheckerVIN is an independent service and is not affiliated with Kenworth or PACCAR.
Ready to Look Up a Kenworth VIN?
Enter any 17-character Kenworth VIN to decode the drivetrain class and plant, then check NMVTIS title brands, open liens, and NHTSA recalls. No account, no card, no catch.
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