The Cooktop is an OEM part for Whirlpool electric ranges and drop-in cooktops. It provides a smooth glass surface with sealed border edges, creating a sleek workplace for meal preparation. Within this surface are multiple discrete sealed cooking zones engineered for precise heat control. Symptoms of a bad cooktop include:   Discoloration, cracks, or chips appearing on the glass surface over time Zones that do not heat evenly or cut out during cooking  Scratches or damage that compromise the sealed surface integrity Causes can be normal wear and tear over years of use exposing the glass to cooking heat and potential accidents. Replace it with this genuine Whirlpool OEM cooktop to restore an effective, durable cooking platform. This replacement cooktop is compatible with Maytag, KitchenAid, Jenn-Air, Amana, Magic Chef, Admiral, Norge, Roper, and some Kenmore-branded kitchen appliances.W10365150 (AP4929242) replaces 1878814, AH3490249, EA3490249, PS3490249, W10318989, W10484427, W10566707.