The K&N 57 Series cold air intake for 1997–2006 Jeep Wrangler with the 4.0L inline-6 uses a roto-molded HDPE tube to increase incoming air volume, paired with a washable, reusable oiled cotton High-Flow air filter. A custom heat shield helps reduce intake temperatures and the oversized filter design allows extended service intervals, with installation typically under 90 minutes.
K&N 97-06 Jeep Wrangler L6-4.0L Performance Intake Kit