Short Ram Air Intake Kit for Jeep Grand Cherokee (1999-2004) 4.7L

High-Flow Short Ram Air Intake Kit for 1999-2004 Jeep Grand Cherokee

What it Does: This short ram air intake system replaces the restrictive factory air box and corrugated piping to lower intake air temperatures, delivering a direct increase in throttle response and volumetric efficiency for the 4.7L V8.

The Stock WJ Grand Cherokee Restriction

The OEM intake tract on the WJ Grand Cherokee is heavily baffled and uses accordion-style plastic tubing designed primarily to eliminate induction noise. This compromises airflow velocity and creates turbulent pockets before the throttle body. Over time, the factory plastic components are highly susceptible to heat soak in the cramped engine bay, drawing in hot, oxygen-depleted air that forces the ECU to pull timing. This results in sluggish low-end torque, reduced passing power, and compromised throttle mapping when under load or towing.

The Engineering Solution

Transitioning to this short ram intake configuration mitigates factory flow restrictions by utilizing smooth, lightweight T-304 aluminum piping with a polished silver finish. Aluminum dissipates localized heat efficiently, while the constant-diameter geometry prevents the airflow shear found in the stock manifold tract. The kit integrates a high-volume, washable, and reusable polyurethane cone air filter that captures particulate matter while vastly increasing the intake flow area. By improving internal aerodynamics and density, the engine benefits from enhanced low and mid-range RPM response, an intense, deep induction tone, and an estimated 7-10% gain in horsepower alongside a 6-8% increase in torque.

Technical Specifications

Compatibility

• 1999-2004 Jeep Grand Cherokee All Models with 4.7L V8 Engine
• 2000-2002 Dodge Durango All Models with 3.7L V6 Engine
• 2000-2002 Dodge Durango All Models with 4.7L V8 Engine
• 2000-2002 Dodge Dakota All Models with 3.7L V6 Engine (Fits Manual & Auto Transmission)
• 2000-2002 Dodge Dakota All Models with 4.7L V8 Engine (Fits Manual & Auto Transmission)

The Jeep Capability Standard

Engineered for consistent powertrain performance, this intake kit provides the enhanced engine aspiration necessary for sustained towing, demanding off-road trails, and the heavy load demands typical of the 4.7L PowerTech platform.