This oven thermocouple is a genuine spare part for your Belling cooker, and it is also compatible with certain New World appliances. This thermocouple is manufactured for the main oven on your appliance and at 1250mm long; this part should be a perfect fit for your appliance.
However we do recommend that you check the compatibility of your cooker before you go ahead and purchase, and this is even more important with this part given that it is a specific length for a reason. You can do this by entering both the manufacturer and model number of your appliance on our homepage.