Shipping times may vary depending on the contents of your order, as some items require additional processing time, fabrication or are shipped directly from the manufacturer. In an attempt to get your parts to you faster we may split shipments by availability or estimated shipping times. If you were emailed tracking for only part of your order, you will receive a separate email with tracking once the remainder of your order ships. Since shipping is free in the Contiguous US (lower 48 states, including DC) you don’t have to worry about additional shipping charges!