What is the purpose of a Coil Cover or Skidplate? Leilani Rodriguez January 18, 2021 12:09 Updated Question: What is the purpose of a Coil Cover or Skidplate? Answer: It protects your coil from scratches and damages. It is a lot easier to replace a coil cover (and less expensive) than replacing a coil. It should be cleaned after detecting to prevent sand and dirt from building up. Relevant to: Coil Covers Comments 0 comments Please sign in to leave a comment.