What material are these Manley exhaust valves made from?

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

Are these valves suitable for all types of engines?

These valves are specifically designed for performance applications, including bracket, drag, and oval track racing, operating under 8000 RPM. They are also recommended for exhaust valves in alcohol-fueled engines.

What is the benefit of the swirl-polished and machined faces?

The swirl-polished under-head areas and fully machined combustion faces are designed to improve airflow efficiency. This helps the engine breathe better, potentially contributing to improved performance.

Specifications

Brand: Manley Performance
Part #: 11632-8
UPC: 807298105307

Manley Ford 4.6L 35mm Race Master Exhaust Valves Set of 8

Name: Manley Ford 4.6L 35mm Race Master Exhaust Valves *Set of 8*
Brand: Manley Performance
SKU: manley-performance-manley-ford-4-6l-35mm-race-master-exhaust-valves-set-of-8-t14-4315737
Price: 235.06 USD
Availability: BackOrder

$235.06

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Fits 2005-2008 Ford F-150. Manley Race Master exhaust valves (set of 8) are made from stainless steel with chrome stems for improved durability.

Key Features

Fits 2005-2008 Ford F-150, 2006-2008 Ford F-250 Super Duty, 2006-2008 Ford F-350 Super Duty, and 2005-2008 Ford Mustang with the 4.6L engine.
Set of 8 exhaust valves, each measuring 35mm.
Constructed from XH-426 stainless steel for durability and heat resistance.
Features chrome stems and hard tips to improve wear resistance and longevity.
Swirl-polished under-head areas and fully machined faces help optimize airflow.
Recommended for use in alcohol-fueled engines for reliable performance.

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About this part

Product Details

These Manley Race Master exhaust valves are built with XH-426 stainless steel, a material chosen for its strength and resistance to heat, making them a solid choice for your Ford 4.6L engine. They're designed for engines that see a lot of action, typically running up to 8000 RPM, whether that's on the drag strip, oval track, or just a spirited street build.

You'll notice the chrome stems and hard tips, which add extra wear resistance where it counts, helping these valves last longer under demanding conditions. The swirl-polished area under the head and the fully machined faces are there to help air move more freely through the cylinder head, which can make a difference in how efficiently your engine breathes. If you're running alcohol-based fuels, these are specifically recommended for exhaust valves because they hold up well in that environment.

This set includes eight 35mm exhaust valves, ready to be installed in your 2005-2008 Ford F-150, F-250 Super Duty, F-350 Super Duty, or Mustang with the 4.6L engine. Remember to always refer to the manufacturer's installation instructions for proper fitment and assembly.