Manley Performance 1.560in Head Diameter Pro Flo/Severe Duty Exhaust Valve (Single) 12361-1 fits Chevy L83 5.3L

Name: Manley Performance 1.560in Head Diameter Pro Flo/Severe Duty Exhaust Valve (Single) 12361-1 fits Chevy L83 5.3L
Brand: Manley Performance
SKU: MAN12361-1
Price: 37.99 USD
Availability: InStock

Brand: Manley Performance

SKU: 12361-1

availability: Special Order: Contact us to check stock and shipping lead times! Use LIVE HELP or call (724) 479-5480

$50.18 USD $37.99 USD

Quantity

Subtotal: $37.99 USD

Quantity must be 1 or more

Description

Description

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.