Manley 11664B-8 Race Flo Intake Valve for Chrysler 5.7L HEMI 2.000" Black Nitride

Featuring a 2.000-inch head diameter and a Black Nitride (B/L) surface treatment, these valves are engineered for high-performance street and competition applications where stock valves fall short.

Manley's Race Flo valve design incorporates a back-cut and optimized underhead geometry to improve airflow into the combustion chamber, supporting higher horsepower builds. The Black Nitride finish provides exceptional hardness and corrosion resistance, reducing wear at the valve face and stem while extending service life under elevated heat and pressure.

Key Features:

• Application: Chrysler/Dodge 5.7L HEMI engine
• Valve Type: Intake
• Head Diameter: 2.000 inches
• Design: Race Flo (R/F) — back-cut and underhead contoured for improved airflow
• Surface Treatment: Black Nitride (B/L) for enhanced hardness and wear resistance
• Material: High-strength stainless steel construction
• Direct replacement upgrade over OEM stock valves
• Suitable for naturally aspirated, forced induction, and nitrous applications

Manley Performance has been a trusted name in engine valvetrain components for decades, producing valves used in everything from street performance builds to professional racing programs. The 11664B-8 delivers the durability and flow characteristics demanded by serious HEMI enthusiasts.