This kit comes with a fully enclosed airbox that protects the filter from dirt and keeps out engine heat. This kit comes with a massive, highly-efficient air filter which results in better performance and protects your engine. Available in either 8-layer Cotton Cleanable or Dry Extendable media. Unique silicone cuff allows tube to pass through the air box. This isolates vibration and engine movement while keeping out unwanted engine heat. Our signature large clear lid provides great looks. Featuring a rubber lid seal to keep out power robbing engine heat.