Used Western Star Engines
Engine-focused identification guidance and a form preselected for Western Star engine requests.
View engine page →Used engines & transmissions
Used Western Star Engines & Transmissions
Western Star vocational and highway trucks may use different engines, gearboxes, electronics, and PTO arrangements within the same model line.
VIN & serial reviewHuman parts supportNationwide coordination
Used heavy-duty partsEngine and transmission requests
VIN & serial assistanceIdentification details reviewed
Nationwide freightShipping coordination available
Warranty optionsTerms shared before purchase
Choose your replacement part
Used Western Star powertrain requests
Use the dedicated route for the component you need. Both pages retain the same VIN- and serial-led review process.
Used Western Star Transmissions
Transmission tag guidance and a form preselected for Western Star transmission requests.
View transmission page →Popular model families
Western Star models represented in the request form
Model names organize the request; VIN and component identification are still required.
Identification guidance
The VIN, engine serial, transmission model, and transmission serial are the best starting points. Include PTO and vocational configuration information when relevant.
Possible engine relationships
Engine families seen in Western Star applications
Possible transmission relationships
Transmission families seen in Western Star applications
Sourcing process
Four steps for a clearer request
Share truck details
Send the part, year, make, model, VIN, and complete identification numbers.
Application review
A parts specialist compares the truck and component identifiers and requests anything missing.
Review the option
Review availability, condition information, price, warranty terms, and included components.
Plan the delivery
Confirm destination access, unloading equipment, freight details, and receiving instructions.
Western Star questions
Compatibility starts with identification
What information is needed for a Western Star parts request?
Provide the VIN, truck model, model year, engine serial or transmission model and serial, plus any data-plate photos you have.
Does the Western Star model name guarantee fitment?
No. Western Star trucks can use different powertrain, electronics, emissions, and vocational configurations within the same model family.
Can I request both a used engine and transmission?
Yes. Use the part selector in the form and submit a separate request for each component when both are needed.
Ready to start?
Tell us what your truck needs
Provide as much identification information as possible. A parts specialist can follow up if another number or specification is needed.
Prefer to speak with someone?1-800-518-9776