What makes this valve 'Extreme Duty'?

The Extreme Duty designation comes from its XH-432 XtremeAlloy material, chrome stems, and hard tips. These features are designed to handle the extreme force and heat found in demanding engine applications.

How does the swirl polishing help?

Swirl polishing the under-head area and fully machining the combustion face are done to optimize airflow. This can lead to improved combustion efficiency within the engine cylinder.

Is this valve sold individually or as a set?

This product listing is for a single exhaust valve. You will need to order the correct quantity for your specific engine build.

Specifications

Brand: Manley Performance
Part #: 11633-1
UPC: 807298105314

Manley Ford 4.6L 38.5mm Race Master & Extreme Duty Exhaust Valves (Single)

Name: Manley Ford 4.6L 38.5mm Race Master & Extreme Duty Exhaust Valves (Single)
Brand: Manley Performance
SKU: manley-performance-manley-ford-4-6l-38-5mm-race-master-extreme-duty-exhaust-valv-t14-373653
Price: 74.57 USD
Availability: BackOrder

$74.57

On Backorder

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

Manley Performance is known for high-performance engine components. This Extreme Duty exhaust valve is built for demanding applications.

Key Features

Fits Ford 4.6L engines.
This is a single exhaust valve.
Constructed from XH-432 XtremeAlloy for extreme heat resistance.
Features chrome stems and hard tips for improved longevity and wear resistance.
Swirl polished under head areas and fully machined combustion faces help improve airflow and combustion efficiency.

⚠️ 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

Manley Performance is known for building tough engine parts for racing and high-stress applications. This single exhaust valve is part of their Race Master & Extreme Duty line, designed for the Ford 4.6L engine. If your engine sees extreme force and heat, this valve is built to handle it.

The key to this valve's durability is its XH-432 XtremeAlloy construction, a material chosen for its ability to withstand intense heat. It also features chrome stems and hard tips, which add to its wear resistance and help it last longer in demanding conditions. For improved airflow and better combustion, the under-head area is swirl polished and the combustion face is fully machined.