If your Toyota Corolla is in need of a heat shield replacement, the average cost will be between $120 and $180. This estimate does not include labor costs, which can range depending on the mechanic and location. The heat shield is a vital part of your vehicle, as it helps to protect the engine from excessive heat. If you are experiencing any problems with your heat shield, it is important to have it fixed as soon as possible to avoid further damage to your engine.