Truck VIN Prefixes (WMI) by Manufacturer
The first three VIN characters — the World Manufacturer Identifier — tell you the maker. Pick a prefix, then check the full VIN's DOT roadside history.
Last updated: June 2026 · Data sources: NHTSA vPIC (live) and FMCSA public inspection records (periodic refresh).
Quick answer
A truck VIN's first three characters (the WMI) identify the manufacturer — for example, 1XK is Kenworth and 1FU is Freightliner. The prefix alone can't identify a specific truck; use the full 17-character VIN for a DOT history check.
1FU — Freightliner1FV — Freightliner3AK — Freightliner3AL — Freightliner1XP — Peterbilt1NP — Peterbilt2NP — Peterbilt2XP — Peterbilt1XK — Kenworth1NK — Kenworth2NK — Kenworth2XK — Kenworth4V4 — Volvo4V5 — Volvo4VG — VolvoYV2 — Volvo1M1 — Mack1M2 — MackVG6 — Mack1HT — International1HS — International3HA — International3HS — International1HV — International5KJ — Western Star5KK — Western Star5PV — HinoJHH — HinoJHD — HinoJAL — Isuzu54D — IsuzuJALC — Isuzu1GD — GMC1GT — GMC1GK — GMC1FD — Ford3FR — Ford1FT — Ford2FZ — Sterling2FW — Sterling2FV — Sterling