This JEA8120ADW Jenn Air cartridge has a speckled white over black glass/ceramic cooktop surface.  This cartridge is from the Jenn Air designer line.

This JEA8120ADW cooktop cartridge has one large radiant heating element and one small radiant element.  This is a genuine OEM part.  The cartridge comes complete.

Note:  This cartridge assembly has three flat terminals and one round terminal located at the short end of the cartridge.