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Manley 11550-8 Severe Duty Intake Valve 2.020in Head NK-844 Stainless

Manufacturer

Picture for manufacturer Manley

Part Number

11550-8
7 reviews
Sale Price

$304.25

Estimated ship date Saturday, November 21

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Product Details

The Manley 11550-8 Severe Duty Series Intake Valve is engineered for high-performance and race engine applications where reliability and precise valve geometry are critical. Manufactured from NK-844 stainless steel with a chrome-plated stem and hardened tip, these valves are built to withstand the extreme heat, pressure, and cycle rates found in demanding race environments.

Each valve is swirl polished and fully machined to exacting tolerances, ensuring consistent airflow and a superior seating surface. The straight stem design adds durability under high-RPM conditions, and the 10-degree x 3/8 in. underhead radius promotes smooth, efficient charge flow into the combustion chamber.

Key Specifications:

  • Valve Type: Intake
  • Head Diameter: 2.020 in.
  • Stem Diameter: 0.3415 in. (11/32)
  • Overall Length: 5.015 in.
  • Installed Height: 0.100 in. longer than stock
  • Tip Length: 0.250 in.
  • Underhead Angle/Radius: 10 degrees x 3/8 in.
  • Margin: 0.070 in.
  • Seat Width: 0.080 in.
  • Top of Head: 7-degree dish
  • Weight: 113 grams (0.249 lbs) per valve
  • Stem Material: Chrome-plated NK-844 stainless steel
  • Tip: Hardened

Products specifications

Approximate Weight (g)

123

Lock Groove Quantity

1-groove

Lock Groove Style

Conventional

Overall Valve Length (in)

5.050 in.

Overall Valve Length (mm)

128.270mm

Quantity

Sold as a set of 8.

Swirl Polished

Yes

Undercut Stem

Yes

Valve Head Diameter (in)

2.020 in.

Valve Head Diameter (mm)

51.308mm

Valve Head Style

7 degree dish

Valve Material

NK-844 stainless steel

Valve Seat Width (in)

0.080 in.

Valve Stem Diameter (in)

0.372 in.

Valve Stem Diameter (mm)

9.449mm

Valve Tip Length (in)

0.220 in.

Valve Tip Length (mm)

5.588mm

Excellent Product, Best Price and Super Fast shipping. I look forward to doing business with them again

Found the part I needed at a really good price

I ordered from Autoplicity because they had the lowest price for an exhaust i was looking for. I was kind of iffy at first but then i read all the great reviews. Very fast shipping and delivery! I will be coming back for my next auto needs. Thank you autoplicity for your great prices and customer service!

great store to deal with shipping is a little high but good at keeping me updated on my order

Great!!

great selection of wares to compare and easy checkout

Looked all over Internet including eBay and autoplicity had best price shipping now let's see Thanx

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