When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
It quiets the sound of the intake air going into the engine, and helps to pull only cool air in from the fender. It is a big restriction, and what it does to help get cold air in hurts performance because the snorkel is so small. Either trim your old on so the hole is bigger or remove it all together for more performance.