Rough Country Cold Air Intake for 1991 2001 Jeep Cherokee XJ 4.0L Rough Country Cold Air Intake Kit 4.0L Jeep Cherokee XJ 2WD 4WD 1984 2001 Jeep XJ Cherokee Cold Air Intakes & Air Filters Best Prices Rough Country Jeep Wrangler Cold Air Intake Pre Filter Bag 10480 (07 18 Cold air intake Rough Country Cherokee XJ Cold Air Intake Pre Filter 10552 Jeep Cherokee XJ 2WD 4WD (1991. Gain increased horsepower and throttle response while protecting your engine from harmful particles and debris with Rough Country's Cold Air Intake System. This intake system moves the air filter away from the stuffy engine compartment so cooler air can be circulated into the engine for an increase in power. Cooler air is denser, and brings more oxygen into the combustion chamber to help your vehicle perform at its greatest potential. The cylindrical design and large diameter tube allow Rough Country's Cold Air Intake System to provide far better airflow than the factory air filter enclosed in a box. Each unit includes a premium, reusable air filter that's easy to clean for a long life of great performance. This easy to install device goes on in a snap for an instant increase in performance. Includes a Limited Lifetime Warranty. Features: Cold Air Intake w Pre Filter Bag (91 01 Jeep XJ 4. 0L) Increases horsepower and performance Improves airflow to engine for better combustion Includes reusable air filter Easy installation High quality construction Notes: Not for sale in California Does Not work on 84 90 models