A Western Star 4900 VIN is 17 characters. Positions 1–3 say who built it and where, 4–8 describe the body and engine, 9 is a check digit, 10 is the model year, 11 is the plant, and 12–17 are the serial number. Decode a 4900 VIN here and you also get its 236 recall campaigns and 14 owner complaints filed with NHTSA — free.
How to read a Western Star 4900 VIN
Here is a real 2019 Western Star 4900 VIN from our database, split into its parts:
VIN 5KKHALFG9KPKK1319 — decoded free on its own report page.
| Position | Section | What it tells you |
|---|---|---|
| 1–3 | WMI | World Manufacturer Identifier — country, manufacturer and vehicle type. |
| 4–8 | VDS | Vehicle Descriptor Section — body style, engine, restraint system, series. |
| 9 | Check digit | A calculated digit that validates the whole VIN. Wrong digit = wrong VIN. |
| 10 | Model year | One character for the model year. Letters skip I, O, Q, U and Z. |
| 11 | Plant | The assembly plant that built the car. |
| 12–17 | Serial | Sequential production number of this exact vehicle. |
Western Star 4900 VIN prefixes, and when each one was used
Characters 1–3 are the World Manufacturer Identifier. Every Western Star 4900 we have on record, from 2001 to 2002, carries the same one — 2WL, which makes it a quick way to confirm you are looking at a real 4900:
| VIN starts with | Years seen | Built in | Vehicle type | VINs on record |
|---|---|---|---|---|
| 2WL | 2001–2002 | Canada | Incomplete Vehicle |
Position 11 names the plant. On the Western Star 4900 it is not one number either — assembly moved between 3 of them over the years:
| Plant code | Years active | VINs on record | Share |
|---|---|---|---|
| P | 2005–2020 | 10 | |
| K | 2001–2002 | 3 | |
| D | 2015–2015 | 1 |
Counted from the 3 dated Western Star 4900 VINs attached to NHTSA complaints — the largest such set for this model — with every code checked against the NHTSA manufacturer registry, so mistyped entries are dropped; the figures say how many records carry each code, not how many 4900s left the line.
Model-year codes for the Western Star 4900
Position 10 carries the model year, skipping I, O, Q, U and Z. The alphabet comes round every 30 years, which for the Western Star 4900 has already happened — 1996 and 2026 share the character T. All 46 model years of the Western Star 4900, 1981 to 2026, with the character each one carries:
| Model year | VIN character (position 10) | Same character as |
|---|---|---|
| 2026 | T | 1996 |
| 2025 | S | 1995 |
| 2024 | R | 1994 |
| 2023 | P | 1993 |
| 2022 | N | 1992 |
| 2021 | M | 1991 |
| 2020 | L | 1990 |
| 2019 | K | 1989 |
| 2018 | J | 1988 |
| 2017 | H | 1987 |
| 2016 | G | 1986 |
| 2015 | F | 1985 |
| 2014 | E | 1984 |
| 2013 | D | 1983 |
| 2012 | C | 1982 |
| 2011 | B | 1981 |
| 2010 | A | — |
| 2009 | 9 | — |
| 2008 | 8 | — |
| 2007 | 7 | — |
| 2006 | 6 | — |
| 2005 | 5 | — |
| 2004 | 4 | — |
| 2003 | 3 | — |
| 2002 | 2 | — |
| 2001 | 1 | — |
| 2000 | Y | — |
| 1999 | X | — |
| 1998 | W | — |
| 1997 | V | — |
When two years share a character, the check digit and serial range tell them apart — that is what the decoder does automatically.
Body and engine characters we see on Western Star 4900 VINs
Positions 4 through 8 describe the build, and manufacturers assign them themselves — the same letter means different things on different marques. Across 5 VINs the Western Star 4900 uses 9 different characters in these three slots alone — the ones below, ordered by how much of the Western Star fleet each covers:
| Position | Characters seen on real VINs | Variety |
|---|---|---|
| 4 — body | X (40%) · P (20%) · R (20%) · H (20%) | 4 distinct |
| 5 — series | A (80%) · D (20%) | 2 distinct |
| 8 — engine | G (40%) · 8 (40%) · 1 (20%) | 3 distinct |
A character that dominates the column usually marks the body style the model was mostly sold in; a spread across several means multiple bodies or engines shared the same platform.
What a decoded Western Star 4900 VIN gets you
Reading the characters is the easy part — the reason to decode a VIN is what sits behind it. For the Western Star 4900 that is 14 owner complaints and every recall campaign NHTSA has on record, keyed to the same VIN you just read:
| Data | For this model | Source |
|---|---|---|
| Recall campaigns | 236 campaigns | NHTSA |
| Owner complaints | 14 filed | NHTSA |
| Model years covered | 46 years | ForCar catalog |
Where to find the VIN on a Western Star 4900
A Western Star 4900 VIN normally opens with 5KK. Four places on the car carry the full number, and all four must agree — on a Western Star 4900, a plate that disagrees is where fraud shows itself first.
| Where | How to see it | Why it matters |
|---|---|---|
| Dashboard, driver side | Through the windshield, bottom corner | Easiest to check before you touch anything |
| Driver door jamb | Open the door, sticker on the pillar | Also lists tyre pressures and build date |
| Under the hood | Firewall or strut tower plate | Survives a windshield replacement |
| Title and insurance | Paper documents | Must match the car — a mismatch means fraud or a swapped panel |
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Frequently asked questions
Is this Western Star 4900 VIN decoder free?
Yes — decoding a Western Star 4900 VIN costs nothing and needs no account. Beyond the year, plant and build characters you also get what NHTSA holds on the Western Star 4900 — 236 recall campaigns and 14 owner complaints — at no charge.
How many characters is a Western Star 4900 VIN?
Seventeen, on every Western Star 4900 built from 1981 onwards, when the 17-character format became mandatory in the US. The oldest Western Star 4900 VIN on file here is a 1984, so everything in our Western Star data already uses the modern layout.
Why do two Western Star 4900 model years share the same VIN character?
Position 10 cycles through the alphabet every 30 years, skipping I, O, Q, U and Z. For the Western Star 4900 that is not theoretical: a 1996 and a 2026 both carry T in position 10, and this model was built in both years. The check digit and serial range separate them.
Can a Western Star 4900 VIN tell me if the car was in an accident?
Not from the characters themselves — they describe how the Western Star 4900 left the factory, not what happened to it afterwards. Crash and title records sit in separate databases keyed to the same number. What is public are the 14 complaints Western Star 4900 owners filed with NHTSA, and those we do show. Run the number through our VIN check to see what is on the record for it.
Do the body and engine characters mean the same thing on every Western Star?
No, and that is the usual mistake — positions 4–8 are assigned per model, not per brand. A letter that means one body on the Western Star 4900 can mean a different one on another Western Star, and something else again on another marque. On Western Star 4900 VINs the character that dominates position 4 is X — read it against the table above, not against a generic chart.
What if the VIN on the dashboard doesn't match the door jamb?
Treat it as a red flag on any car, and on a Western Star 4900 check the prefix first: for the model year in question it should open with 2WL, depending on when the car was built — anything outside that set did not come off a Western Star 4900. Beyond that, mismatched plates mean either a replaced panel or a tampered identity — ask for documents and verify before any money changes hands.