Throttle Body Upper Intake Plenum | Improved Airflow Upgrade | Supports Larger Throttle Bodies | Direct Bolt-On Installation | Compatible with 1996–2004 Ford Mustang GT 4.6L

Improves Performance. Increase the airflow into your Pony's two valve 4.6L V8 engine to improve horsepower, torque, and overall performance with a Mustang Upper Intake Plenum.A Must For Larger Throttle Bodies. Installing a larger throttle body on the factory intake plenum still restricts incoming airflow, but now you get the most out of your Pony's bigger throttle body by installing an upper intake plenum for improved air flow. Precision Crafted. This Intake Plenum is made from a permanent mold casting of 356 aluminum to produce a higher quality casting than conventional sand molds, which reduces porosity for an improved finish.Application. The Upper Intake Plenum is a direct bolt-in replacement for all 1996 to 2004 4.6L 2V Mustangs using a Stock, 70mm, or 75mm Throttle Body.

• Improved Airflow Efficiency Upgrade: Designed to optimize intake airflow on 4.6L 2-valve Mustang GT engines, this upper intake plenum helps reduce airflow restriction between the throttle body and intake manifold. Ideal for enthusiasts looking to support smoother airflow delivery when upgrading intake components while maintaining OEM-style fitment.
• Ideal Support for Larger Throttle Bodies: Perfectly suited for stock 70mm or 75mm throttle bodies, this plenum allows larger throttle bodies to operate more efficiently by minimizing bottlenecks found in the factory plenum. A smart companion upgrade when improving intake system balance on naturally aspirated builds.
• Precision Cast Aluminum Construction: Manufactured from permanent mold cast 356 aluminum, this intake plenum offers a smooth internal finish with reduced porosity for consistent quality. Aluminum construction provides durability, heat resistance, and long-term reliability for daily driving or performance-oriented setups.
• Direct Bolt-On Fitment Design: Engineered as a direct replacement, this upper intake plenum installs using factory mounting points with no cutting, drilling, or fabrication required. Designed for a straightforward installation using basic hand tools while retaining factory sensors and connections.
• SR Performance Service: At SR Performance, we provide a wide range of aftermarket automotive products designed to improve appearance, elevate performance, and optimize utility. We understand each vehicle owner's unique needs and are devoted to meeting them with personalized procedures. Our committed team places great value on and actively responds to customer input, consistently striving to surpass expectations and meet the needs of our diverse clientele.