Weatherstripping protects crevices between parts like trunks and doors to prevent outside elements and debris like water, dirt, and more from getting in the vehicle, corroding the vehicle, and from falling on you. If winter has wreaked havoc on your weatherstripping, or if it’s just time to replace it, there are a few tips you can follow to make the install easier. This article and video reviews how to replace the weatherstripping on your car with some general steps from our expert mechanic Mike.