Sometimes we are out of stock on a part. In most cases, we will be receiving the part from a local supplier within a few days and your order will be shipped to you as soon as the part is added to stock. If your order contains a part that is on back order for 1-2 weeks, we will ship the remainder of your order. The back ordered part will be shipped separately, at no extra cost to you, as soon as it is in our warehouse. If you order a part that will be on back order for longer than 2-3 weeks, we will contact you to confirm you would still like the part.