The K&N cold air intake system for the 2005 Nissan Pathfinder V6-4.0L uses a roto-molded HDPE intake tube paired with a washable, reusable High-Flow oiled cotton filter and a custom heat shield. The source states guaranteed increases in horsepower and torque, up to 100,000 miles between service under normal highway use, and typical installation in under an hour.
K&N 05 Nissan Pathfinder V6-4.0L Performance Intake Kit