Help Center
Common questions about buying and selling parts here. If your answer is not below, get in touch.
How do I know a part fits my vehicle?
Each listing shows the vehicles it fits by year, make, model and trim. Use the vehicle selector at the top of the site to filter to parts that fit yours. Fitment data is a guide — always check the part number against the one on your vehicle before fitting.
Who am I actually buying from?
GenuineAutoPartsUSA is a marketplace. Each part is sold and shipped by an independent, verified vendor. The vendor name appears on every listing and on your order.
What do OEM, Aftermarket, Remanufactured and Used mean?
OEM is a genuine manufacturer part. Aftermarket is a new part made by someone else to the same fit. Remanufactured is a used core rebuilt to working specification. Used is a serviceable part removed from another vehicle. You can filter by any of these when searching.
When will my order ship?
Most vendors ship within one business day. The listing shows the handling time before you buy, and you get an email with tracking as soon as the label is created.
Can I return a part?
Yes — most parts can be returned within 30 days of delivery, unused and in original packaging. If the part was wrong, damaged or not as described, return shipping is covered.
How do I become a vendor?
Apply through the Become a Vendor page. We verify your business details and reseller certificate before you can list, which is what keeps the marketplace trustworthy for buyers.
Is my payment secure?
Payments are processed by Stripe. We never see or store your full card number.