What material is this exhaust valve made from?

This Manley Race Master exhaust valve is constructed from XH-426 stainless steel. This material is chosen for its strength and ability to withstand high temperatures commonly found in performance engines.

Are these valves suitable for alcohol-fueled engines?

Yes, these valves are specifically recommended for exhaust valves in alcohol engines. Their robust construction and material properties help ensure reliable performance even under the demanding conditions that alcohol fuels can create.

What is the difference between Race Master and Race Flo valve shapes?

The Race Master valve, like this one, features a straight stem. The Race Flo shape is a different design intended to suit specific racing engine requirements, offering an alternative for optimizing airflow and combustion.

Specifications

Brand: Manley Performance
Part #: 12331B-1
UPC: 807298079295

Manley Chrysler Hemi 6.4L (1.654) Race Master Exhaust Valve (Single)

Name: Manley Chrysler Hemi 6.4L (1.654) Race Master Exhaust Valve (Single)
Brand: Manley Performance
SKU: manley-performance-manley-chrysler-hemi-6-4l-1-654-race-master-exhaust-valve-sin-t14-488884
Price: 29.39 USD
Availability: BackOrder

$29.39

On Backorder

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

Manley Race Master Exhaust Valve for Chrysler Hemi 6.4L. Stainless steel construction for durability.

Key Features

Fits Chrysler Hemi 6.4L engines.
Features a 1.654 inch diameter.
Constructed from XH-426 stainless steel for durability.
Chrome stems and hard tips enhance wear resistance and longevity.
Swirl polished under-head areas and fully machined combustion faces optimize airflow and efficiency.
Recommended for exhaust valves in alcohol 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

Secure CheckoutFast Shipping631-982-0042

About this part

Product Details

Starting with a 1.654 inch diameter, this Manley Race Master exhaust valve is built for demanding engine builds. It's constructed from XH-426 stainless steel, a material chosen for its strength and ability to handle high temperatures, making it a solid choice for engines that see a lot of work, especially those running alcohol fuels where exhaust valves face extra stress. The stem is chrome-plated for improved wear resistance, and the under-head area is swirl polished to help smooth airflow into the combustion chamber, contributing to better efficiency.

These valves are fully machined, including the combustion face, which helps ensure a consistent seal and optimal performance. Manley offers these in a Race Master (straight stem) design, which is what you're looking at here, or a Race Flo shape, so you can pick the best fit for your specific engine's needs. If you're rebuilding a Chrysler Hemi 6.4L and need reliable exhaust valves that can handle sustained operation, these are a well-built option.