Shipping depends on the size of your order. The more parts you purchase, the lower you will pay shipping fees. Delivery time varies based on the availability of products, the distance to your nearest warehouse, and the shipping method you selected during checkout.
You can return any defective items for free no later than 15 days after receiving them. Non-defective parts include a restocking fee if you return or exchange them. Auto parts with electronic components are not eligible for a refund if you tried to install them or opened the package.
Contact customer service using the live chat feature on their website. You can also fill out this contact form to send them a more detailed message regarding your concerns.