Manley Chevy LS-3/L-99 Small Block 2.165 Pro Flo Intake Valves (Single Valve)

Manley Valve - Intake, Valve-L-92 P/F 2.165

Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake), offering unmatched tensile strength compared to competitive alloys.

In fatigue testing at 40,000 psi and 1400°F, Manley exhaust valves endured 100 million cycles, while competitors failed after just 100,000, proving a 1,000× longer fatigue life. Each valve features chrome stems, hard tips, and swirl-polished underheads with fully machined combustion faces for superior airflow, efficiency, and wear resistance.

Built for those who demand race-winning strength and precision, Manley Severe Duty® Valves set the industry standard for performance and endurance.