Quick answer
PartStop stocks premium-quality aftermarket direct-replacement parts for Western Star semi trucks — including 4900, 5700XE, 4700 and the 47X/49X/57X — 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 Western Star trucks (5700XE and more) — what we stock, how the model families differ, and how to verify fitment by VIN or cross-reference before you buy.
Western Star models we stock parts for
PartStop carries premium-quality aftermarket direct replacements for Western Star trucks including 5700XE, 4900, 4700, 49X, 47X, 57X — running Detroit DD13 / DD15 / DD16 power (Daimler). 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
Western Star builds the heavy end of the market — logging, oilfield, heavy-haul and severe vocational trucks. The classic 4900 has been in production for decades, and the new X-Series (49X/47X/57X) took over from 2020 on. Body and lighting parts follow those families.
As a Daimler brand, Western Star shares Detroit engines and many chassis components with Freightliner — cross-reference numbers often land on the same part. Our catalog search matches those numbers directly.
Three ways to guarantee the right fit
- VIN search: paste your Western Star 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 Western Star categories
Browse everything that fits Western Star in one click, or jump to the categories Western Star owners order most.
Frequently asked questions
Are these genuine Western Star parts?
No — PartStop sells premium-quality aftermarket direct replacements, not original-equipment products. Western Star 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 Western Star models do you cover?
4900, 5700XE, 4700 and the 47X/49X/57X — 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 3:00 PM PT ship the same business day (Monday–Saturday) from Tacoma, WA; after 3:00 PM PT they ship the next business day, so an overnight order placed after the cutoff arrives the day after next. Standard delivery typically takes 3–5 business days, free on orders over $100; overnight is available on most items as an expedite surcharge (2× the standard rate, or $50–$350 by order value when standard ships free).
In stock at PartStop
Western Star parts in stock now
Premium-quality aftermarket direct replacements, in stock and shipped same day from Tacoma with a 6+ month warranty.
Fleet pricing
Running a fleet? Buy in packs and save
Chambers are a wear item — stock the shelf and a torn diaphragm is a quick swap, not a parked truck. 2-, 4- and 10-packs drop the per-unit price.
Also Available As a Deal
Buy the 2-PackSave 15%
23518315 2-Pack Molded Elbow Hose
$33.98$39.98
Buy the 2-PackSave 15%
A0000905051 2-Pack Diesel Fuel Filter for Freightliner Western Star
$60.99$75.98
Buy the 4-PackSave 20%
A0000905051 4-Pack Diesel Fuel Filter for Freightliner Western Star
$114.99$151.96
Buy the 10-PackSave 25%
A0000905051 10-Pack Diesel Fuel Filter for Freightliner Western Star
$272.99$379.90
Buy the 2-PackSave 15%
01-27425-000 2-Pack Belt Tensioner for Freightliner & Western Star 5700XE 5800XE
$84.98$99.98
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.