What kind of applications is this valve designed for?

This valve is specifically designed for demanding applications that require extreme force and heat resistance. This includes Top Fuel and Funny Car drag racing, as well as Big Block Chevy marine engines.

What material is this exhaust valve made from?

The valve is made from Manley's XH-432 XtremeAlloy. It also features chrome stems and hard tips for enhanced durability and wear resistance.

Does this valve come with any other components?

This product listing is for a single exhaust valve. It does not include any other components such as valve springs, retainers, or seals.

Specifications

Brand: Manley Performance
Part #: 12739-1
UPC: 807298070971

Manley Big Block Chevrolet Extreme Duty Exhaust Valve - 5.522in Overall L 1.900in Diameter - Single

Name: Manley Big Block Chevrolet Extreme Duty Exhaust Valve - 5.522in Overall L 1.900in Diameter - Single
Brand: Manley Performance
SKU: manley-performance-manley-big-block-chevrolet-extreme-duty-exhaust-valve-5-522in-t14-329342
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 Big Block Chevrolet Extreme Duty Exhaust Valve - 5.522in Overall L 1.900in Diameter - Single Valve - Exhaust

Key Features

This product is a single Manley Performance Extreme Duty exhaust valve.
It measures 5.522 inches in overall length and has a 1.900-inch diameter.
Constructed from XH-432 XtremeAlloy for extreme force and heat resistance.
Features chrome stems and hard tips for improved longevity and wear resistance.
Swirl polished under head areas help improve airflow.
Fully machined combustion faces optimize 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

Secure CheckoutFast Shipping631-982-0042

About this part

Product Details

In this package, you get a single Manley Performance Extreme Duty exhaust valve, part number 12739-1. This valve measures 5.522 inches overall in length and has a 1.900-inch diameter. It's built for demanding situations where high force and heat resistance are critical, like in Top Fuel and Funny Car drag racing, or for Big Block Chevy marine engines.

The valve is constructed from Manley's XH-432 XtremeAlloy, a material chosen for its toughness. It also features chrome stems and hard tips, which help it stand up to wear and last longer. The under-head area is swirl polished to help improve airflow, and the combustion face is fully machined for better combustion efficiency.