The spark ignition switch, identified as part number WP74010857, is intended for use with cooktops and activates the burner when the knob is adjusted to the Lite setting.
Prior to installation, confirm that the gas supply is deactivated and the cooktop is disconnected from power.
This switch fits Jenn-Air models and is also produced by Whirlpool for its Amana, KitchenAid, Maytag, Jenn-Air, Magic Chef, Roper, and Admiral brands, along with products for Sears-Kenmore and Ikea.