Parts for a DCS stove can be purchased at a variety of online retailers. Fisher & Paykel, the company that manufactures DCS products, does have a website, Fisherpaykel.com, that sells parts for its products.
Find the part number by locating the stove's model number, typically found on the bottom right corner of the oven frame. Most retailers include a picture of the part, along with the part number, to help ensure the correct part is purchased. Locating a part for a DCS stove can be done by typing the part number and stove model into a search engine such as Google.