Aftermarket direct-replacement parts for Peterbilt trucks (579 and more) — what we stock, how the model families differ, and how to verify fitment by VIN or cross-reference before you buy.
Peterbilt models we stock parts for
PartStop carries premium-quality aftermarket direct replacements for Peterbilt trucks including 579, 589, 567, 389, 386, 379, 367, 348, 337 — 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
Peterbilt mirrors Kenworth's split (both are PACCAR): the aero 579/567 working the fleets, and the square-hood 389 (successor to the legendary 379) carrying the owner-operator flag. The 389/379 chrome and stainless culture means body, lighting and trim parts move constantly.
PACCAR parts often cross between Peterbilt and Kenworth under the same numbers — a cross-reference search by the number on your old part frequently finds the same component listed for both brands at a better price.
Three ways to guarantee the right fit
- VIN search: paste your Peterbilt 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.
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Premium-quality aftermarket direct replacements — nationwide same-day shipping, 6+ month warranty.