The element required for your model is shown in the link below:
http://www.ukapplianceparts.com/elements.asp?search_fd5=ZHQ575
You will be able to replace this element with the oven in situ. be careful when removing the element that the wires don't retract back in to the oven housing, otherwise you'll have to remove the oven and remove the back to gain access.
Lee, January 2007