What material is this intake valve made from?

This intake valve is made from NK-844 material. This material is known for its high tensile strength, especially at elevated temperatures, making it suitable for demanding engine conditions.

What are the benefits of the swirl polished underhead area?

The swirl polished underhead area is designed to help improve airflow into the combustion chamber. This can contribute to more efficient combustion and potentially better engine performance.

Does this valve come with any hardware?

This product listing is for a single intake valve. It does not include any additional hardware such as valve springs, retainers, or keepers. These components would need to be purchased separately if required for your engine build.

Specifications

Brand: Manley Performance
Part #: 12358-1
UPC: 807298109923

Manley Chevy L83 5.3L 1.930in Head Diameter Pro Flo/Severe Duty Intake Valve (Single)

Name: Manley Chevy L83 5.3L 1.930in Head Diameter Pro Flo/Severe Duty Intake Valve (Single)
Brand: Manley Performance
SKU: manley-performance-manley-chevy-l83-5-3l-1-930in-head-diameter-pro-flo-severe-du-t14-430934
Price: 45.18 USD
Availability: BackOrder

$45.18

On Backorder

Order now to reserve yours — we'll ship as soon as stock arrives. Full refund if we're unable to fulfill.

Manley Chevy L83 5.3L Pro Flo/Severe Duty Intake Valve. Made with NK-844 material for high-temp engines.

Key Features

This product is a single Manley Pro Flo/Severe Duty intake valve.
It has a 1.930-inch head diameter and a .3133-inch stem diameter.
Constructed from NK-844 material, which has very high tensile strength at high temperatures.
Features a chrome stem and a hard tip for improved durability.
The under-head area is swirl polished to help optimize airflow.
Designed for high-temperature gasoline engines.

⚠️ CA WARNING: This product can expose you to chemicals known to the State of California to cause cancer and/or birth defects or other reproductive harm. Learn more

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About this part

Product Details

This is a single Manley Pro Flo/Severe Duty intake valve for Chevy L83 5.3L engines. It features a 1.930-inch head diameter and a .3133-inch stem diameter. This valve is constructed from NK-844 material, chosen for its exceptional strength at high temperatures, making it well-suited for demanding gasoline engine applications.

Manley's Severe Duty valves are built for durability. The NK-844 material used for intake valves offers significantly higher tensile strength at elevated temperatures compared to common alternatives. This valve also includes a chrome stem and a hard tip for added wear resistance. The under-head area is swirl polished to help improve airflow into the combustion chamber, contributing to more efficient combustion.

This single valve is part of Manley's Pro Flo/Severe Duty line, designed to withstand rigorous use. If you're rebuilding or upgrading your L83 5.3L engine, these valves are a solid option for improved performance and longevity.