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Manley 11590-8 Severe Duty Intake Valves Big Block Ford 429-460

(2016-2018 Ford Focus)

Manufacturer

Picture for manufacturer Manley

Part Number

11590-8
7 reviews
Sale Price

$311.48

Estimated ship date Thursday, November 19

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Fitment guaranteed

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Product Details

The Manley 11590-8 Severe Duty Series intake valves are engineered for high-performance and racing applications in Big Block Ford 429 and 460 engines. These premium valves feature a 2.400-inch head diameter, 0.342-inch stem diameter, and 5.725-inch overall length, making them an excellent choice for serious performance builds.

Superior Materials and Construction:

  • Manufactured from proprietary NK-844 stainless steel for intake valves—a material unmatched in the industry
  • Chrome stems with hardened valve tips for exceptional durability
  • Fully machined and swirl polished for optimal flow characteristics
  • Available with undercut "Pro Flo" stems for improved performance

Key Specifications:

  • Head Diameter: 2.400 inches
  • Valve Stem Diameter: 0.342 inches (11/32")
  • Overall Length: 5.725 inches

The Severe Duty series represents Manley's flagship valve line, featuring materials that deliver superior high-temperature strength and resistance to chordal fractures. At 1000°F, NK-844 displays more than four times the ultimate tensile strength of competing intake valve materials, ensuring reliability in the most demanding racing and performance environments.

Products specifications

Fits

2016-2018 Ford Focus

Great price, great service, A+

Fast shipping, great product. Nothing more needs to be said.

they had the parts i needed and ordering was fast and easy. great job guys,and thanks.

Easy to work with.

They had the parts I needed at the best price. I needed some questions answered to make sure I was ordering the right parts for a 4 year old car and they were very helpful when I called.

Best price on the internet for my parts. Shipped out the next morning.

Finding my parts on this website was incredibly easy. The prices were the lowest around and I was kept up to date about the estimated delivery date. Order #19058

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