There are two types of Jenn-Air ranges and cooktops that accept cartridges:
Designer line and
To distinguish them, Designer Line cartridges have a plug on the end, while Expressions Collection cartridges have their plugs on the side. If you are unsure of which type you have, you should search our database for your model number by typing it into the box at the left that says "Model Number" and clicking the "Search" button. Doing that will take you to a parts listing for your model, and there will be a section titled "Cartridges and Accessories" with a list of all the cartridges for your model.