aFe 51-46209 Momentum ST CAI for 91-01 Jeep Cherokee XJ 4.0L I6

Vehicle Fitment

• 1991-1995 Jeep Cherokee XJ (L6-4.0L)
• 1996-2001 Jeep Cherokee XJ (L6-4.0L)

Features

• aFe Momentum ST Pro DRY S cold air intake system
• One-piece sealed housing with auxiliary air scoop for coldest air charge
• Pro DRY S synthetic dry air filter - washable and reusable
• Dyno-tuned CAD-designed roto-molded intake tube for improved airflow
• Increases airflow up to ~10 % over stock intake
• Boosts engine performance with up to +16 HP and +19 lb-ft torque
• Premium hardware and clamps for secure installation
• Direct bolt-on fitment - no cutting or drilling required

Specifications

• Part Number: 51-46209
• System Type: Momentum ST cold air intake
• Filter Type: Pro DRY S dry synthetic media
• Tube Material: Roto-molded plastic
• Housing: One-piece sealed with auxiliary scoop
• Performance Gains: Up to +16 HP and +19 lb-ft torque (varies by vehicle)
• Airflow Increase: Up to ~10 % over factory
• Emissions: 46-state legal; not CARB exempt in all states

Included Components

• 1x Pro DRY S dry synthetic air filter
• 1x One-piece sealed housing with auxiliary air scoop
• 1x Roto-molded intake tube
• 1x Full set of premium clamps and couplings
• 1x Complete installation hardware kit

Product Description

The aFe 51-46209 Momentum ST Cold Air Intake System is engineered to improve performance and airflow on Jeep Cherokee XJ models from 1991 through 2001 equipped with the 4.0L inline-6 engine. Featuring a one-piece sealed housing with an auxiliary air scoop and a Pro DRY S synthetic dry air filter, this system is designed to draw in cooler, denser air while increasing airflow over the restrictive factory intake. The CAD-designed roto-molded intake tube and premium hardware help deliver enhanced throttle response and measurable gains in horsepower and torque without requiring cutting or drilling of OEM components.

Installation is straightforward with a direct bolt-on design, and the washable, reusable Pro DRY S filter media simplifies maintenance with no oiling required. This intake can deliver up to ~10 % greater airflow and up to +16 HP and +19 lb-ft of torque gains depending on vehicle configuration, making it an excellent performance upgrade for Cherokee enthusiasts. Note that while this part is 46-state legal, it is not CARB exempt for all states; confirm local emissions requirements before installation.