Do more for your four-door sports car with upgraded Maxima Door Sills. Door Sills are a great welcoming feature when entering your car or truck. You can't miss with Maxima Door Sills. Upgrade your Door Sills to get added protection from dirt and scratches. Maxima Door Sills are in style. The proper Door Sills seal your car properly. Replace old worn out parts with new Door Sills.