Quick answer
PartStop stocks premium-quality aftermarket direct-replacement parts for Kenworth semi trucks — including T680, T880, T800, T660, W900 and W990 — shipped nationwide from Tacoma, WA the same business day, with a 6+ month warranty. Verify fitment free by VIN at partstop.net/vin or by the OEM / cross-reference number on your old part.
Aftermarket direct-replacement parts for Kenworth trucks (T680 and more) — what we stock, how the model families differ, and how to verify fitment by VIN or cross-reference before you buy.
Kenworth models we stock parts for
PartStop carries premium-quality aftermarket direct replacements for Kenworth trucks including T680, T880, T800, W900, W990, T370, T270, C500 — running PACCAR MX-13 and Cummins X15 power. Every part ships from Tacoma, WA the same business day when ordered before the daily cutoff, with free standard shipping on orders over $100 and a 6+ month warranty.
Know your model family before ordering
Kenworth splits into two worlds: the aerodynamic T680/T880 that dominate highway fleets, and the classic long-hood W900 that owner-operators keep on the road for decades. Parts do not cross between the two families — an aero-cab mirror or headlight will never fit a W-model.
Because W900s stay in service so long, aftermarket direct replacements are often the ONLY practical supply for their trim, lighting and body hardware — dealer stock thins out on 20-year-old trucks while the aftermarket keeps making them.
Three ways to guarantee the right fit
- VIN search: paste your Kenworth VIN into the catalog search — you get the decoded truck plus only the parts verified to fit that build.
- Cross-reference number: search the number stamped on your old part; our listings match by verified cross-references, not photos.
- Call us: (253) 600-1351 with the VIN and part number — we confirm fitment before you pay. Wrong-part returns waste a week; a 2-minute check doesn't.
Popular Kenworth categories
Browse everything that fits Kenworth in one click, or jump to the categories Kenworth owners order most.
Frequently asked questions
Are these genuine Kenworth parts?
No — PartStop sells premium-quality aftermarket direct replacements, not original-equipment products. Kenworth part numbers on our listings are used for cross-reference and identification only. Aftermarket direct replacements install on the factory mounting points and typically cost significantly less than the dealer counter.
Which Kenworth models do you cover?
T680, T880, T800, T660, W900 and W990 — plus universal-fit parts (filters, lighting, air-brake components) that run on any Class 8 truck. Coverage grows monthly; if you don't see your model, call with the VIN.
How do I make sure a part fits my truck?
Use the free VIN lookup at partstop.net/vin (parts verified against your truck's build data), match the OEM / cross-reference number from your old part, or call (253) 600-1351 — fitment is checked before you buy.
How fast does PartStop ship?
In-stock orders placed before the daily cutoff ship the same business day (Monday–Saturday) from Tacoma, WA. Standard delivery typically takes ~3 business days, free on orders over $100; overnight is available on most items ($50 small / $150 medium / $300 large parcel).
Shop related parts
Premium-quality aftermarket direct replacements — nationwide same-day shipping, 6+ month warranty.
Need the part, not just the reading?
Every part below is a Premium Quality aftermarket Direct Replacement with published OEM cross-reference numbers, a 6+ month warranty and same-business-day shipping from Tacoma, WA. Not sure it fits? Run your VIN — or call and a person who knows trucks will verify fitment before you pay.