Hello, my name is George.. It is unfortunate, but this is a complete unit.. The unit part number is ***** and is available from the Siemens Website
OK, looks like a new hob then
Sorry, it is not good news is it.. £251 is a lot to pay for that little part...Maybe if you would like to recycle the old unit once you have a new one it will make you feel a little better... If you do, try Findmyrecycler to see if they have anyone local
Alternatively, try access a secondhand replacement from the likes of ebay using the model number of ET78354EU or part number of 359532Please remember to rate my assistance kindly Stuart.
Did you manage to sort the problem Stuart