Description
High-Performance Intake Component. The Holley EFI Ultra Lo-Ram Intake Manifold Plenum Lid in satin finish is engineered to enhance airflow efficiency and power delivery for Ford Coyote engines equipped with Ultra Lo-Ram intake manifolds. This plenum lid provides convenient access to internal components and helps optimize mid to high RPM torque and horsepower, making it an essential upgrade for performance enthusiasts.
Construction and Appearance. Crafted from robust cast aluminum, this plenum lid features a natural as-cast finish that offers durability, especially in boosted or modified applications. Its casting process ensures strength and resistance to cracking, while the satin texture delivers a professional, durable look suitable for high-performance engine bays.
Installation. Installation is straightforward with a direct replacement design for the Ultra Lo-Ram base manifold, requiring no drilling or special modifications. This allows for quick upgrades with minimal mechanical intervention, suitable for both experienced mechanics and enthusiasts.
Application. Specifically designed to fit the 2011-2023 Ford Mustang GT and GT350 models, this plenum lid offers optimal clearance and compatibility without interfering with factory hood components. Its fitment ensures seamless integration into these popular performance vehicles.
Holley EFI 300-923
CA Residents: WARNING: Cancer and Reproductive Harm
- Removable top or lid design adds versatility and easy access
- Made from durable cast aluminum suitable for boosted applications
- Natural as-cast finish provides a rugged appearance
- Compatible with Ford Coyote engines featuring Ultra Lo-Ram intake systems
- Designed to improve mid to high RPM powerband performance
- Features plenum lid that fits Ultra Lo-Ram base manifold
- Includes provisions for accessory port connections and fuel rails
- Streamlined design reduces airflow turbulence around injector boss
- Enhances clearance compared to Ford Performance Cobra Jet manifolds
- Supports oval throttle body configurations up to 150x66mm
- Offers 19.4mm front and 42.6mm rear clearance benefits
- Facilitates easy throttle body inlet interchangeability
- Fits 2011-2023 Mustang GT and GT350 models






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