Semi Truck VIN Lookup
Enter your 17-character VIN and see the parts verified to fit your exact truck — decoded from your build data and matched against OEM cross-references.
Free · no account needed · supports Freightliner, Kenworth, Peterbilt, Volvo, Mack, International & Western Star
Enter your VIN
17 characters, from the door jamb or registration. We decode make, model, year, engine and GVWR.
We match verified fitment
Your build data is checked against our catalog's fitment records and OEM cross-references — not a keyword guess.
Shop parts that fit
Results open in the catalog, already filtered to your truck. Same-day shipping from Tacoma, WA on in-stock orders.
VIN Lookup — Common Questions
How does the VIN parts lookup work?
Your 17-character VIN encodes the truck's make, model, year, engine and GVWR. We decode it against the NHTSA vPIC database, then match the result to our catalog's verified fitment data — so the parts you see are matched to your actual build, not a generic model guess.
Where do I find my truck's VIN?
On the driver's side door jamb sticker, the frame rail near the front axle, your registration, or your insurance card. It is always 17 characters and never contains the letters I, O or Q.
Which trucks does the lookup support?
All major Class 8 makes — Freightliner, Kenworth, Peterbilt, Volvo, Mack, International and Western Star — plus medium-duty trucks. If a part can't be verified against your VIN, we show it as universal-fit or ask you to confirm with our team first.
Is the VIN lookup free?
Yes — completely free, no account needed. Enter the VIN, see the parts, order what fits.
What if I'm not sure a part fits?
Call (253) 600-1351 or email info@partstop.net with your VIN and the part you need — we verify fitment against the OEM number before you buy.