Parts buyers search by part number and by their own year, make and model, so a listing with the exact OEM number in the title and accurate fitment beats a pretty description every time.

Title (80 characters). Put in what buyers type: years, make, model, part name, OEM, the part number, and key options or flaws. Leave the long vehicle list for the fitment table, not the title (eBay parts sales hub).

Example: 09-12 Mercedes C300 Left Driver Headlight HID Xenon OEM [part number] *Scratch

Item specifics. Fill every one eBay offers. The Manufacturer Part Number (MPN) is required in many car and truck parts categories, and OE/OEM and interchange numbers help buyers find you.

Fitment (compatibility). Add every year, make and model the part fits, up to 3,000 combinations. Use eBay's parts catalog when it recognizes your part number; otherwise enter it by hand (only year, make and model are required). Listings with fitment get a boost in search. You're responsible for its accuracy, and wrong fitment triggers eBay Guaranteed Fit returns that eBay charges back to you (eBay, Guaranteed Fit).

Condition. Choose honestly between Used and For parts or not working (Part 8). Note that "Used – Part on Vehicle" is only for certified recyclers; always pull the part before you list it.

Description checklist

• Donor vehicle: year, make, model, trim, engine and mileage if known
• Every part number on the label
• What's included (connectors, brackets, bulbs, hardware) and what isn't
• What you tested and how; what you couldn't test
• Programming or coding requirements for modules, keys and radios
• Every flaw, matching the photos
• Return policy and handling time

Pricing research

1. Search eBay for the part number, then filter Sold Items (shows the last 90 days).
2. Open Seller Hub > Research (Product Research, formerly Terapeak) for up to 3 years of sold prices and the sell-through rate. It's free (eBay).
3. Price against what actually sold, in the same condition, not against asking prices.
4. Run the profit math before you list: sale price − 13.6% fee − $0.40 ($0.30 on orders of $10 or less) − shipping − packing − yard cost − your share of gate fees and mileage. Remember eBay's fee also applies to the shipping you charge.
5. Add Best Offer on slower parts, and cut 5–10% at the 30- and 60-day marks if views are low (Part 12).

Shipping in the listing. Many sellers include shipping in the price on small parts because buyers filter for free shipping. Use calculated shipping on heavy or bulky parts so you aren't caught by distance. Set 1–2 business days of handling time.