Description: MAXIMUM PERFORMANCE Our cold air intake for the 1997-2006 Jeep Wrangler TJ 4.0L was engineered to minimize air restriction and flows 66.99% better than stock. This kit comes with a fully enclosed airbox that protects the filter from dirt and keeps out engine heat. PROTECT YOUR ENGINE 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.