Manley Valve - Intake, Valve-P/F 2.100, +.100, .3133 STEM 12338-1

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Specifications:

BrandManley
Part Number12338-1
GTIN00807298081991
Cylinder HeadAfr Cylinder Head
EngineSmall Block
Engine TypeIce
Engine Valve Quantity1
Head Diameter2.100 in
MakeChevrolet
Margin Width0.055 in
O/a Length5.035 in
Product TypeEngine Intake Valve
Seat Width0.100 in
Stem Diameter0.3133 in
Tip Length0.260 in
Top Of Head7 Degree Dish
Underhead AnglePro Flo: 12.00
Underhead Radius3/8
Valve Head Diameter2.100 in
Valve Head Shape7 Degree Dish
Valve Length5.035 in
Valve MaterialStainless Steel
Valve Quantity1
Valve SeriesSevere Duty? Series
Valve Stem Diameter0.3133 in
Valve Sub-seriesPro Flo
Valve Tip Length0.260 in
Valve TypeIntake

Specifications:

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.

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